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#31
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Help with Compost Tea
In article , newsgroup wrote:
On Tue, 09 Sep 2003 10:47:45 -0700, (paghat) wrote: An additional bottom line is you can't repair damage poorly maintained soils with this alleged quick fix, whereas if ongoing soil management techniques are correctly followed, then no reason to even wish for the quick fix. You're missing the boat on this one. Somehow you want to hold the intire compost tea industry responsible for irresponsible claims. CT is a PART of a soil development and management system. It's a valuable part of a sustainable and/or organic paradigm. The PRIMARY claim of the WHOLE industry is that aerobic compost teas prevent pathogens. There is zero evidence this is so. Atop this irresponsible claim of the ENTIRE industry are selective claims of other untrue or unproven values divied up between many vendors. The plain fact is there is no one selling this in all honesty. To do so would turn the majority of potential marks, er, customers away, & toward mulching with composts instead -- better efficacy, without the the potential harmful side effects. Shit girl quit being so fing angry. Now that Pam and Vic are poking at you you'll undoubtedly ramble on endlessly about how ****ed up CT and it's proponents are. So be it. I could care less if my 5 years of successes have no value to you or Chalker. (there's more than a little behind the scenes politics there!). It is so damned easy to have a successful garden that you "blaming" your success on the ONE thing that that the science shows has little or nothign to do with it is just you being ridiculous. CT remains a tool to regenerate and develop soils. A choice that is inferior to topcoating with mulch & proper watering. A choice that is temporary at best. A choice that is unnecessary if soils are otherwise properly managed, & useless if the soils need repair & are wetted with teas instead of finally properly managed. The CONTROLED studies show that normal watering has the same effect as watering with compost teas. That is NOT to say that outcomes are lousy with compost teas, only to say the teas had nothing to do with those outcomes. If your gardening methods are otherwise sound, you're doing neither harm nor good with it, it's totally beside the point. If you wasted good money on "aerobic brewing" equipment, & really spent the last five years using that expensive & stupid equipment, I can see that emotionally it would be hard to face the peer-reviewed data that indicates you not only allowed yourself to be duped for the price, but wasted a lot of time for a lot of years that could've been spent gardening instead. It remains a tool in taking dead soils and reintrodcuing biological competition. But does so less effectively than quality compost & regular watering, & in no sustained manner without doing what is ACTUALLY necessary, maintaining the organic material in the soil, & moistening it. Using teas instead of moist organic material leaves out the most essential part, the organic material, so does less rather than more for the soil. And if used "in addition" to the proper method, unecessarily duplicates the better practice, & in some cases could even result in overfertilizaion & collapse of microorganism population. You are concerned about glyphosate damaging soils and at the same time unwilling to listen. That brilliant steel trap is now closed. No, I seriously wanted to believe this isn't a fraud; I've made & used teas myself; I've read a great deal about them. It slowly became obvious that EXCLUSIVELY the vendor literature supports it, the science does not, & the vendor's preference for aerobic teas is the worst of all choices (non-aerobic having a FEW indications of value in OCCASIONALLY suppressing some pathogens in some plants, in unpredictable manners -- the aerobic stuff vendors advocate doesn't even have that little bit of validity!) If you can see the citations & compare the sources & still you NEED to believe you haven't wasted your time & money on this stuff, it's you who are unwilling to embrace the reality that not every fad is effective merely for being organic. If you'd said it works as a fertilizer then I'd agree, but you're sticking to that mistaken idea that it's the best way to up the microorganism count of the soil. THAT effect doesn't even last a week, & the maximum possible microorganism count is achievable with organic compost & regular watering, sustained by slow release actions, not by rapid alleged fixes. Get real. Don't be a dupe. -paghat the ratgirl -- "Of what are you afraid, my child?" inquired the kindly teacher. "Oh, sir! The flowers, they are wild," replied the timid creature. -from Peter Newell's "Wild Flowers" See the Garden of Paghat the Ratgirl: http://www.paghat.com/ |
#33
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Help with Compost Tea
"Bill Oliver" wrote in message
... In article , paghat wrote: Dr. Chalker-Scott of the University of Washington Center for Urban Horticulture has written a splendid article entitled "The Myth of Compost Tea" which you can find on-line with a google search & download to your desktop as a PDF file. She has modified her metanalysis in "The Myth of Compost Tea Revisited," in Aug 2003. see: www.cfr.washington.edu/research.mulch/ Click on "Horticultural Myths" Click on "Myth - Aerobically-brewed Compost Tea Suppresses Disease - August" under "2003" billo Bill I read the article. An odd thing is that Dr. Chalker-Scott refers to Roundup as a pesticide instead of an herbicide. This is a common lay-person mistake, but an academic should know better. Certainly when written as a professional paper. Compostman, Washington, DC, Zone 7 |
#34
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Help with Compost Tea
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#35
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Help with Compost Tea
On Wed, 10 Sep 2003 10:14:13 GMT, "Compostman"
I read the article. An odd thing is that Dr. Chalker-Scott refers to Roundup as a pesticide instead of an herbicide. This is a common lay-person mistake, but an academic should know better. Certainly when written as a professional paper. Compostman, Washington, DC, Zone 7 With all due respect, it IS a pesticide. Calling it a pesticide is not incorrect for either professional or lay people. The specific type of pesticide it is, is a herbicide. Still, it's a pesticide and can be called such. V |
#36
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Help with Compost Tea
In article VPC7b.133178$0v4.9749357@bgtnsc04-
news.ops.worldnet.att.net, says... Roundup as a pesticide instead of an herbicide. This is a common lay-person mistake, but an academic should know better. Certainly when written as a professional paper. Pesticide is the overall group which will contain herbicides, insecticides, fungicides, rodenticides, etc. Same as Citrus the group containing oranges, grapefruit, lemon, etc -- http://home.comcast.net/~larflu/owl1.jpg Lar. (to e-mail, get rid of the BUGS!! |
#37
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Help with Compost Tea
Well, it's obvious that these are two superior minds who are
permanently ensonced on their respective sides of the fence. At this point, the main question in my mind is whether or not compost tea serves as a good nutrient boost for my garden. I wasn't aware of any cure-all claims for the potion, nor was I aware that it was even available commercially. I just want to know if I'm wasting my time in preparing a batch of the brown liquid if my primary goal is to feed my plants. Thanks for your well-informed posts. -Fleemo |
#38
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Help with Compost Tea
"Compostman" wrote in message ...
"Bill Oliver" wrote in message see: www.cfr.washington.edu/research.mulch/ Click on "Horticultural Myths" Click on "Myth - Aerobically-brewed Compost Tea Suppresses Disease - August" An odd thing is that Dr. Chalker-Scott refers to Roundup as a pesticide instead of an herbicide. This is a common lay-person mistake, but an academic should know better. Certainly when written as a professional paper. Compostman, Washington, DC, Zone 7 Actually John, the odd thing is how religious wackos dislike science so much they look for "mistakes" that aren't even there -- whether it's a evolutionist convinced dinosaur bones are the trick of the devil & scientists have it all wrong, or someone whose religion is a tawdry profitable vendor-promoted fad that has come to take religious precedence over scientifically field-tested & proven organic methods. In fact professional horticulturists (as opposed to vendors & amateurs) among one another tend to call fungicides, herbicides, pesticides, & stuff intended to kill small mammals "pesticides," so too they are so-defined in law governing their legal use & sale. It confuses me sometimes, too, but having only lately re-read a lot of the scientific literature on the dangers of RoundUp, seeing it frequently called "pesticide" by the accredited scientists, I'm beginning to get used to it. When addressing amateurs who'd be TOO easily befuddled, the categorizations should certainly not be lumped together as they would be in legal or research contexts. Looking for non-existant mistakes is a sorry replacement for rationality. It won't change the fact that as increasing field studies are completed & the findings published, the science has to date remained unable to show that aerated compost teas have any beneficial effect in retarding or preventing plant pathogens. (Some of the other claims, such as allopathic properties, are too stupid to even field-test for.) Yet pathogen control, one of the things it CAN'T do, is the main thing marketeers promote it for. Unaerated teas MIGHT have slight benefits according to the science, within specific contexts that might be exaggerated by vendors, but that's not even what vendors are selling pricy useless equipment to brew -- they're selling something that has not been shown to have any slight value in retarding pathogens, limited context or otherwise, & they sell it to control pathogens anyway. It's a so-so source of fertilizer inferior to mulching with compost (and mulching with compost really does retard pathogens unlike aerated teas). Aerated teas can have a transient effect on microorganism populations, the value of which the science finds doubtful or debatable, & any possible value of which is inconsequential compared to surface composting & normal watering. Though it might have been rationally & honestly sold as an organic alternative to other liquid fertilizers & nothing more, it continues instead to be promoted & sold for vastly more things than it is useful for, foremost for disease control over which it has no proven effect whatsoever. Vendors created these myths because it is profitable to make gullible organic gardeners & wouldbe-expert back-yard composting geeks spend even more of their money on something vendors can conjure out of poo. And after duped marks have overpaid vendors for gallon jugs of poo-water often enough, those same marks are easily snookered into "saving money" by spending four or five hundred dollars on aerated tea home kit -- which if used with the expectation of preventing pathogens is purely wasted money & effort. Profits encourage these big lies. With out the magic-bullet element concocted as a completely false sales pitch, no one in their right mind would go to all that effort to turn first-rate compost into a second-rate fertilizer. And since even the wholesalers of the poorly made electrical gizmos warn the user is apt to be electrocuted by the damned thing if it is used in the wet conditions it is inevitably used in, maybe the real purpose of the thing IS ecological -- to clean up the gene pool of people dumb enough to fall for it. As you like to call yourself compostman, religiously answering compost questions as though you're the chief expert, you might consider bothering to learn the difference between peer reviewed science & vendor advertising mythology before dishing out advice. I frankly until now thought you knew better, as I've never seen you recommending compost teas in your hundreds of posts about composting; no one knowledgeable in the science would place compost tea foremost, would certainly warn gardeners not to waste hundreds of dollars on it since even if they wanted to give it a try it can be done at home without even slight cost. Now, though, I wonder if you ever really know what you're going on about. Perhaps it really is time to replace that Rodale composting book you brag about relying on -- composting science has come a LONG way since 1959 when that was written. -paghat the ratgirl |
#39
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Help with Compost Tea
"Compostman" wrote in message ...
And I've come to the conclusion that people who post extremely long messages have made the internet their life. The garden is virtual. You've come to so few rational conclusions in your life haven't you. Now get the hell off the net & go stir your eency weency pile of compost that has defined your sole alleged expertise on UseNet. Sheesh, talk about the pot calling alabaster black. -paggers |
#40
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Help with Compost Tea
On 10 Sep 2003 12:04:40 -0700, (Fleemo) wrote:
I just want to know if I'm wasting my time in preparing a batch of the brown liquid if my primary goal is to feed my plants. A letter posted today on yahoo groups compost-tea. Compost tea has been around a LONG time. Since the Roman Empire, to the best of anyone's knowledge. Just like aspirin, or honey for a sore throat, biodynamic preps. the science behind using these practices was lacking. Scientific studies were not performed with these materials, because of the weight of tradition behind them. Aspirin began to be studied just a few years ago, and it was clear that effectiveness could be improved by understanding why aspirin works. Different formulations work better for different kinds of pains. Compost tea is like aspirin for your soil and plants. Does it need scientific study? Sure. That's what IS HAPPENING with compost tea. We're getting around to studying it. But to declare that compost tea has no benefit because someone tried it on their bushes, or did a study where they used something that probably wasn't compost tea is a bad case of throwing the baby out with the bath water. There's some bath water that needs to be exited (maybe snake-oil would be another term), but there's a core of solid knowledge developing about compost tea. Compost tea can work, amazingly well, but just like aspirin, some traditional formulations leave a lot to be desired. Throwing compost into water and leaving it to ferment can result in dead plants, or can result in vibrant, healthy plant. Inconsistency in results is what has probably prevented compost tea from gaining widespread acceptance. I've killed a few plants with stinky, smelly compost tea. That's why I know at least some of what not to do. Don't leave compost tea in a container until it starts to smell bad. Just because it smells bad doesn't always mean that bad things will happen. Sometimes there is no effect. Sometimes, the brew has enough competitive organisms in it to out-compete the disease on your plant and give positive results. BUT, any time harm has been observed, the tea has been stinky and smelly. So, how do you make a tea that is consistently beneficial? Aerate the tea during production, and the danger is removed. If we control the brewing conditions, then much more consistent teas are produced. When someone assumes that non-aerated tea will automatically be anaerobic, they reveal that they don't know much about the entire business. How do you know for certain something is aerobic? A real scientist would use an oxygen probe to measure oxygen concentration. Data are required to make a statement about aerobic - anaerobic conditions in tea. Non-aerated teas can still be aerobic. If you are a non-scientist, smells are a reasonable way to assess anaerobic conditions. If the brew stinks, or smells bad, there's a real possibility that some very bad things will happen to your plants. Putting bad smelling, anaerobic tea into your soil may not cause the soil to go anaerobic, but it will certainly help move it that way. Anaerobic liquids may kill or put-to-sleep the beneficial organisms in soil that make soil aggregates. That means compaction will be more likely in the future, and your soil will be even less of a good place to grow your plants if it gets more compacted. Do we need to test each batch of tea? Not if the data are there to show us that a machine can maintain aeration and mixing to produce good tea. You have to follow directions about temperature, water quality, added foods in the brewer, and compost quality. But if the tea machine maker has done the testing and can show the data about bacteria, fungi, protozoa and nematodes in the tea brewer, and you follow their directions, then the tea you make should be fine. Maybe testing the first two or three batches to prove to yourself that you are doing fine would be a good idea. Why is there so little published on actively aerated compost tea? Because the machines to make consistent compost tea were only invented within the last five years. And the first people to make such a machine did not do adequate testing on exactly what that machine was able to do, or why it worked so well. So, we're working on the science. But just because there are some snake-oil sales-people out there doesn't mean you throw the whole industry out the door. What is needed is education on which machines give tea that works every time, and which machines are snake-oil purveyors. The International Compost Tea Council (www.intlctc.com) is working on testing all the kinds of tea-makers on the market. They have a good explanation of what is good tea, and why it is good tea on their website. Soil Foodweb Inc (www.soilfoodweb.com) has compared different tea machines on the market. Our findings showed serious differences between different tea machines in their ability to extract and grow the organisms from the compost. The biggest split was between machines that often become anaerobic during the tea brewing cycle, such as the Soil Soup machines, and the Growing Solutions machines. These two machines CAN make aerobic teas, if you are careful to use very low amounts of foods in the tea brew, but then you can't grow decent levels of bacteria or fungi if the compost used is truly mature. Fungi are never adequate in the Soil Soup machine, and only occasionally adequate in the Growing Solutions machine. All of our agricultural and urban or suburban soils are typically low in fungi. Humans till and disturb soil, and that tillage knocks the fungi for a real loop. So, it is critical to get fungi back into the soil, and get the disease protection needed back on the roots, leaves, stems, and blossoms of the plants. Machines like the KIS brewers (www.simplici-tea.com), the EPM brewers (www.composttea.com), the WormGold brewers (www.wormgold.com), and the Bob-O-Later brewers (check the yahoo groups.com compost tea list serve, for their info) make excellent tea, with all the organisms in the compost extracted into the tea. They have data on their websites, they have demonstration areas they can send you to show where the tea is working (the best demos are in Idaho, on potato land, but the daylilies, people's lawns and gardens and even golf courses can be seen as well). Now, if soil is already healthy, and toxic chemicals are not needed to maintain the system, what does that tell you? That the biology needed is in your system already. More good won't hurt, but it won't improve things. But you don't shut down an entire industry because one person's yard is in good health. That's like saying that because I'm healthy right now, the whole antibiotic industry is pointless and antibiotics should be banned. What about when you get sick? What about when there is a disease outbreak? You are going to need the antibiotic. When people do have plants that are not healthy, they need an approach that will bring back the healthy condition. Same thing with human health. We need a medical system that pushes health, instead of antibiotics. Oh, you don't get rid of the antibiotics, because people will get into situations where there is no other solution, but you don't use the "nuke-em" approaches unless absolutely necessary. Same with compost tea. There will be conditions where the disease is so bad, that the tea can't keep up. So use the toxic chemical and then get tea back out there so you don't have to keep using the nuke-em. But there is more work needed to learn exactly what conditions result in the best compost tea. That work is on-going. Keep checking the ICTC website, the SFI website for more information. Compost has the benefits it does because of the organisms and the foods to feed those organisms in the compost. The organisms interact. Logic is lacking when someone suggests that compost tea is a problem because we "have to now worry about the microbes interacting" (quote from the B&B article that appeared in August). There's no logic in claiming "there's a potential for variability" in compost tea without also applying that same criticism to compost. In fact, the most variable thing in compost tea is the compost. If someone wants to claim "some people do testing that is inconclusive", that just says there's a problem with your sampling, not that every tea ever made is worthless. As if the same criticism couldn't be applied to soil, or compost, or chicken soup. Compost leachates should not be confused with compost tea. A leachate is an extraction of soluble materials. Tea requires the physical removal of the whole diversity of organisms from the compost, which cannot be achieved by passive movement of water through the compost. Tea is also brewed, so the organisms have time to grow, reproduce, and increase in numbers. No one who knows anything about compost tea would call a liquid a leachate in one sentence and call the same material a compost tea in the next sentence. Cedar Grove produces a compost leachate, not a compost tea. Someone in city government should push the issue with them, because Cedar Grove is mis-representing what they are selling. Maintaining an understanding of the difference between leaching and leachates is also important. In properly made compost, the inorganic forms of nitrogen (N) should be at barely detectable levels. The inorganic forms of N are the most leachable kinds of N, which is why compost usually gets a bad rap as a fertilizer - low to no inorganic N, S, or P. But plenty of N is present in any decent compost, but present as bacteria, fungi, protozoa, nematodes, microarthropods, and perhaps worms. Biology is not leachable; the organisms have to be attached to their food, or they don't stay active. So organisms hold on very well indeed. Leachates DO NOT contain significant biology because microbes don't wash off compost or leaf surfaces with a mere rinse or wash. Leachates contain soluble materials from the soil, compost, mulch, potting mixes, or whatever. Data exist to show that compost teas contain measurable amounts of nutrients, but not in a leachable form. You want proof? Send in a good, aerobic compost tea to a chemistry lab. They can show you that the N in compost tea does not exist in the inorganic forms. But look at the biology. That's where the N is located. Now, leave a compost leachate in a vat for awhile and what Dr. Chalker-Scott was worried about could be true. Putrefying organic matter does not contain the biology needed to hold the nutrients in place. Without the right biology, leachable forms of N, P, or S do not get converted to non-leachable forms. How do nutrients get moved out of the bacteria and fungi and back into a plant-available form? This requires predators of bacteria and fungi, but in the right amounts and in the right places. The plant should control this interaction, and it does in healthy soil. But when the soil lacks predators, then nutrient cycling cannot occur. Compost and compost tea contain all these organisms, in greater concentration and diversity than soil. They are both inocula of the organisms. If the habitat is right, organisms grow and thus spread through your soil. Compost tea contains the soluble nutrients found in compost, but lacks the solids that occur in tea. So, is it better to use compost or compost tea? Compost will have a benefit for years, while compost tea, no matter how high in biology and soluble foods, has a limited ability for maintaining organism activity. But organisms grow, and as a source of the diversity of organisms needed to get back in your soil, both compost and compost tea are terrific. Compost tea is easier to apply than compost, and can be used to deliver the organisms to the foliage. So which is better? Depends on what you need. Now, let's clear the air about the study that was done at UW in 2001. Soil Foodweb Inc documented that the COMPOST contained a good set of organisms - that is bacteria, fungi and protozoa. Sorry, the compost wasn't outstanding, as there were no nematodes present. A Growing Solutions Microb-Brewer machine was used, which IF PROPERLY CLEANED, is capable of extracting good bacterial, fungal and protozoan biomass. (But please note that Growing Solutions no longer makes Microb-Brewers. They make a different machine now). Note that the Dr. Chalker-Scott article tried to side-step around the fact that the tea was never documented to be worth the time and effort they were putting into it. Was the tea made properly? Did they clean the machine properly? NO DATA about the TEA. What about their sprayer? Did they ever test the leaf surfaces to see if they were getting organisms on the leaves? Did they get proper coverage of the leaf surfaces? They did not document any of those things. When doing a study that is purported to be scientific, the very least you have to do is show that the treatment being applied is in fact what you say it is. I visited the tea brewer that was being used for the UW study and immediately pointed out that they had severe cleaning problems. The insides and outsides of the brewer were streaked with bio-film, the pipes had not been cleaned. The brewer smelled so bad that I could not remain in the area. The excuse I received at the time was that the person cleaning the brewer had been on vacation just before I arrived. That's an excuse. If the person had been cleaning the machine properly, they would have left it clean. More realistically, the tea brewer had probably not been cleaned the entire summer. When I was there, I pointed out that no effort had been made, despite constant reminders, to make sure they were getting adequate organism coverage on the leaf surfaces. They had no idea if the brown liquid they were putting out was really tea. This is in contrast to numerous clients of ours who have checked their first two or three tea brews and learned that they need to do to make top-notch tea and get excellent leaf coverage. There were other possible problems, such as not applying the tea at the correct rates. For example, on Jackson golf course, the FIRST tea application was not made until after July 4. In the Pacific Northwest, all those ugly fungal patches, take-all, molds, and root-feeding grubs are well-established by mid-summer. To expect compost tea to take care of all the fungicide that has been sprayed up until then, much less all the diseases already well-established by that point is just ludicrous. The compost tea organisms have to establish BEFORE the "bad-guys". During my second trip to talk with these people, at the end of the season, when I was standing on a green riddled with horrible patches of disease, it was revealed that when the head superintendent was away on vacation, the person left in charge had decided to use chemicals on the supposed "tea-greens". It was after that point that the tea had failed. Hum, I wonder why? So, is it fair to suspect that there was a hidden agenda operating during this study? At the beginning of the compost tea study in Seattle in 2001, I was threatened with a lawsuit just for saying that I work with Jim Moore, from Texas, who does consulting on golf courses, and has studies going on USGA greens. When questioned whether Jim had a Ph.D., I said I wasn't aware that Jim Moore had a Ph.D. But a golf course employee called Dr. Moore and told him I had claimed that I worked closely with him. Dr. Moore became so angry he threatened me with a lawsuit. Guess what? There's more than one Jim Moore living in Texas and more than one working on golf courses which have USGA greens. Actually, the real Jim Moore told me that there were at least two more Jim Moore's in Texas working on USGA golf courses. For anyone to jump into lawsuit territory based on this "evidence" is beyond the bounds of normal behavior. But I think it tells a significant story about these studies on compost tea in 2001. Compost tea has been around for a long time. The benefits have been variable. We need to standardize the tea-making process, so we know that each tea made is going to deliver the biology needed to improve soil and cover leaf surfaces. There will be snake-oil sales people who try to cash in on this potential. There will be proponents of the old paradigm who fear what change will bring. But you can see through their lack of logic pretty easily. Is more replicated, solid science required? Yes. But check out the science that has been done on the information listed on the ATTRA website. And in the book published by Soil Foodweb Inc. If a scientist were really interested in doing a decent study on compost tea, they would test the tea, and make sure the biology was surviving in the soil and on the leaf surfaces. Just checking the compost, before making the tea, is not adequate science. As a consumer, how do you protect yourself? The snake oil salesmen don't have any data to show their machines, or "compost", or "catalyst packages" actually improve the biology in the brew. They don't have studies that show that the biology in the tea improved the biology in the soil. Those kinds of studies have been done by Soil Foodweb, and are in the Compost Tea Brewing Manual, or will be published in scientific journals. We have a SARE tea trial in vineyards in review by a scientific journal currently. And it is NOT just bacteria that must be present in the brew (beware of the plate count methods that only give bacterial results!). Fungi, protozoa and nematodes are also required in tea brews that will improve your soil, and ultimately end up with systems that require very little maintenance. Neither pesticides nor compost tea are needed in healthy systems. But we have to have healthy soils first. Fungi have been killed by the constant fungicide applications to our rose bushes, our cut flowers, our gardens, and ag fields. We need to put the beneficial fungi, protozoa and nematodes back. If you add back just bacteria, as two of the machines on the market are only able to do, you cannot hope to get the full benefit. So, the bottom line is that caution is required, but out-right rejection is silly. Do some reading, check some websites, look at some demos. Don't waste your money on things that only give you step one in a twelve step program, and don't buy something from someone giving you hype. Data should be asked for, and if they don't have any data, walk away. For more information, please contact the ICTC, or Soil Foodweb Inc. Dr. Elaine R. Ingham is President of Soil Foodweb Inc, with labs in Oregon and New York, Australia, New Zealand, Holland and Mexico. She is graduate faculty at Southern Cross University, Lismore, NSW. |
#41
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Help with Compost Tea
In article ,
Tom Jaszewski newsgroup wrote: On 10 Sep 2003 12:04:40 -0700, (Fleemo) wrote: Compost tea is like aspirin for your soil and plants. It gives them hemorrhagic strokes, gastric ulcers, and abnormal bleeding times? Yuck. I just hate it when my Diffenbachia start eating up my Tums and bleed on the carpet. billo |
#42
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Help with Compost Tea
In article , newsgroup wrote:
On 10 Sep 2003 12:04:40 -0700, (Fleemo) wrote: I just want to know if I'm wasting my time in preparing a batch of the brown liquid if my primary goal is to feed my plants. Yowza, I sure hope you reposted that as a hilarious example of the muddy supernatural thinking of VENDORS trying to hornswoggle you into believing complete & utter nonsense, leaving out even moderate scientific content! As Dr Elain is one of the big-cheese VENDORS she perfectly represents the VENDOR perspective on why you should spend money on stuff her company sells. Funny she has been peddling this stuff a long time now, and STILL pretending "real soon now" her own COMPANY research will soon appear in scientific journals, as if her inane ad-copy could get past peer review (hasn't managed to do so thus far!). In this "letter" devoid of citation source or fact other than her sales-oriented company, she DOES manage to include the following nonsense in her VENDOR's screed: 1) She repeats the old lie about compost teas being a source of nematodes. 2) she notes that science is your enemy in these matters "because the weight of tradition" counts for more than emperical evidence of any kind unless it can be fudged for commerce. 3) She repeats the common vendor explanation for why all the field studies show aerated compost tea has no effect beyond that of plain water in controlling pathogens: It wasn't "real" compost tea! (Every vendor says "mine would've worked, they didn't use mine, it doesn't prove mine doesn't work" -- "magic" thinking). 4) Riddles her screed with central "ideas" that are completely irrational, like "compost tea is like asprin" -- truly avoiding the simplest logic. 5) Lyingly rephrases the extant science to make it sound as crazy as her screed 6) Lies outright that she can teach methods of absolute consistency for consecutive batches of teas. 7) Claims that compost teas are actually DANGEROUS if you don't learn from her methods (that's a new one! Most of these vendors don't want to link compost tea to the idea of dangerousness -- but I can see that someone who charges up the wazoo for compost tea workshops called "tea seminars" would want to create another level of tea mythology, that without her input you'll kill your garden) 8) Lies outright that safe teas can only be made with expensive commercial equipment you should buy. 9) Lies outright about there being no studies so far proving anything one way or another, but that her company & the equally commercial Compost Tea Counsel will real-soon-now be publishing THEIR evidences of its miracle values, & you should rely on that sort of vendor information ahead of time right now since you surely know they're gonna say miracles are miracles after all. 10) Contradicts six peer-reviewed published studies that show compost teas quickly leach out of soils before plants are benefited, & replacese reality with a flimflam version about compost pile leachates. 11) Uses the "baby with the bathwater" argument as back-up when the lies don't work -- cuz even if everything the peer-reviewed science has shown to be true really is true, you should still use the teas for purposes it is no good for because otherwise you're throwing the baby out with the bathwater. A letter posted today on yahoo groups compost-tea. Compost tea has been around a LONG time. Since the Roman Empire, to the best of anyone's knowledge. Just like aspirin, or honey for a sore throat, biodynamic preps. the science behind using these practices was lacking. Scientific studies were not performed with these materials, because of the weight of tradition behind them. Aspirin began to be studied just a few years ago, and it was clear that effectiveness could be improved by understanding why aspirin works. Different formulations work better for different kinds of pains. Compost tea is like aspirin for your soil and plants. Does it need scientific study? Sure. That's what IS HAPPENING with compost tea. We're getting around to studying it. But to declare that compost tea has no benefit because someone tried it on their bushes, or did a study where they used something that probably wasn't compost tea is a bad case of throwing the baby out with the bath water. There's some bath water that needs to be exited (maybe snake-oil would be another term), but there's a core of solid knowledge developing about compost tea. Compost tea can work, amazingly well, but just like aspirin, some traditional formulations leave a lot to be desired. Throwing compost into water and leaving it to ferment can result in dead plants, or can result in vibrant, healthy plant. Inconsistency in results is what has probably prevented compost tea from gaining widespread acceptance. I've killed a few plants with stinky, smelly compost tea. That's why I know at least some of what not to do. Don't leave compost tea in a container until it starts to smell bad. Just because it smells bad doesn't always mean that bad things will happen. Sometimes there is no effect. Sometimes, the brew has enough competitive organisms in it to out-compete the disease on your plant and give positive results. BUT, any time harm has been observed, the tea has been stinky and smelly. So, how do you make a tea that is consistently beneficial? Aerate the tea during production, and the danger is removed. If we control the brewing conditions, then much more consistent teas are produced. When someone assumes that non-aerated tea will automatically be anaerobic, they reveal that they don't know much about the entire business. How do you know for certain something is aerobic? A real scientist would use an oxygen probe to measure oxygen concentration. Data are required to make a statement about aerobic - anaerobic conditions in tea. Non-aerated teas can still be aerobic. If you are a non-scientist, smells are a reasonable way to assess anaerobic conditions. If the brew stinks, or smells bad, there's a real possibility that some very bad things will happen to your plants. Putting bad smelling, anaerobic tea into your soil may not cause the soil to go anaerobic, but it will certainly help move it that way. Anaerobic liquids may kill or put-to-sleep the beneficial organisms in soil that make soil aggregates. That means compaction will be more likely in the future, and your soil will be even less of a good place to grow your plants if it gets more compacted. Do we need to test each batch of tea? Not if the data are there to show us that a machine can maintain aeration and mixing to produce good tea. You have to follow directions about temperature, water quality, added foods in the brewer, and compost quality. But if the tea machine maker has done the testing and can show the data about bacteria, fungi, protozoa and nematodes in the tea brewer, and you follow their directions, then the tea you make should be fine. Maybe testing the first two or three batches to prove to yourself that you are doing fine would be a good idea. Why is there so little published on actively aerated compost tea? Because the machines to make consistent compost tea were only invented within the last five years. And the first people to make such a machine did not do adequate testing on exactly what that machine was able to do, or why it worked so well. So, we're working on the science. But just because there are some snake-oil sales-people out there doesn't mean you throw the whole industry out the door. What is needed is education on which machines give tea that works every time, and which machines are snake-oil purveyors. The International Compost Tea Council (www.intlctc.com) is working on testing all the kinds of tea-makers on the market. They have a good explanation of what is good tea, and why it is good tea on their website. Soil Foodweb Inc (www.soilfoodweb.com) has compared different tea machines on the market. Our findings showed serious differences between different tea machines in their ability to extract and grow the organisms from the compost. The biggest split was between machines that often become anaerobic during the tea brewing cycle, such as the Soil Soup machines, and the Growing Solutions machines. These two machines CAN make aerobic teas, if you are careful to use very low amounts of foods in the tea brew, but then you can't grow decent levels of bacteria or fungi if the compost used is truly mature. Fungi are never adequate in the Soil Soup machine, and only occasionally adequate in the Growing Solutions machine. All of our agricultural and urban or suburban soils are typically low in fungi. Humans till and disturb soil, and that tillage knocks the fungi for a real loop. So, it is critical to get fungi back into the soil, and get the disease protection needed back on the roots, leaves, stems, and blossoms of the plants. Machines like the KIS brewers (www.simplici-tea.com), the EPM brewers (www.composttea.com), the WormGold brewers (www.wormgold.com), and the Bob-O-Later brewers (check the yahoo groups.com compost tea list serve, for their info) make excellent tea, with all the organisms in the compost extracted into the tea. They have data on their websites, they have demonstration areas they can send you to show where the tea is working (the best demos are in Idaho, on potato land, but the daylilies, people's lawns and gardens and even golf courses can be seen as well). Now, if soil is already healthy, and toxic chemicals are not needed to maintain the system, what does that tell you? That the biology needed is in your system already. More good won't hurt, but it won't improve things. But you don't shut down an entire industry because one person's yard is in good health. That's like saying that because I'm healthy right now, the whole antibiotic industry is pointless and antibiotics should be banned. What about when you get sick? What about when there is a disease outbreak? You are going to need the antibiotic. When people do have plants that are not healthy, they need an approach that will bring back the healthy condition. Same thing with human health. We need a medical system that pushes health, instead of antibiotics. Oh, you don't get rid of the antibiotics, because people will get into situations where there is no other solution, but you don't use the "nuke-em" approaches unless absolutely necessary. Same with compost tea. There will be conditions where the disease is so bad, that the tea can't keep up. So use the toxic chemical and then get tea back out there so you don't have to keep using the nuke-em. But there is more work needed to learn exactly what conditions result in the best compost tea. That work is on-going. Keep checking the ICTC website, the SFI website for more information. Compost has the benefits it does because of the organisms and the foods to feed those organisms in the compost. The organisms interact. Logic is lacking when someone suggests that compost tea is a problem because we "have to now worry about the microbes interacting" (quote from the B&B article that appeared in August). There's no logic in claiming "there's a potential for variability" in compost tea without also applying that same criticism to compost. In fact, the most variable thing in compost tea is the compost. If someone wants to claim "some people do testing that is inconclusive", that just says there's a problem with your sampling, not that every tea ever made is worthless. As if the same criticism couldn't be applied to soil, or compost, or chicken soup. Now, leave a compost leachate in a vat for awhile and what Dr. Chalker-Scott was worried about could be true. Putrefying organic matter does not contain the biology needed to hold the nutrients in place. Without the right biology, leachable forms of N, P, or S do not get converted to non-leachable forms. How do nutrients get moved out of the bacteria and fungi and back into a plant-available form? This requires predators of bacteria and fungi, but in the right amounts and in the right places. The plant should control this interaction, and it does in healthy soil. But when the soil lacks predators, then nutrient cycling cannot occur. Compost and compost tea contain all these organisms, in greater concentration and diversity than soil. They are both inocula of the organisms. If the habitat is right, organisms grow and thus spread through your soil. Compost tea contains the soluble nutrients found in compost, but lacks the solids that occur in tea. So, is it better to use compost or compost tea? Compost will have a benefit for years, while compost tea, no matter how high in biology and soluble foods, has a limited ability for maintaining organism activity. But organisms grow, and as a source of the diversity of organisms needed to get back in your soil, both compost and compost tea are terrific. Compost tea is easier to apply than compost, and can be used to deliver the organisms to the foliage. So which is better? Depends on what you need. Now, let's clear the air about the study that was done at UW in 2001. Soil Foodweb Inc documented that the COMPOST contained a good set of organisms - that is bacteria, fungi and protozoa. Sorry, the compost wasn't outstanding, as there were no nematodes present. A Growing Solutions Microb-Brewer machine was used, which IF PROPERLY CLEANED, is capable of extracting good bacterial, fungal and protozoan biomass. (But please note that Growing Solutions no longer makes Microb-Brewers. They make a different machine now). Note that the Dr. Chalker-Scott article tried to side-step around the fact that the tea was never documented to be worth the time and effort they were putting into it. Was the tea made properly? Did they clean the machine properly? NO DATA about the TEA. What about their sprayer? Did they ever test the leaf surfaces to see if they were getting organisms on the leaves? Did they get proper coverage of the leaf surfaces? They did not document any of those things. When doing a study that is purported to be scientific, the very least you have to do is show that the treatment being applied is in fact what you say it is. I visited the tea brewer that was being used for the UW study and immediately pointed out that they had severe cleaning problems. The insides and outsides of the brewer were streaked with bio-film, the pipes had not been cleaned. The brewer smelled so bad that I could not remain in the area. The excuse I received at the time was that the person cleaning the brewer had been on vacation just before I arrived. That's an excuse. If the person had been cleaning the machine properly, they would have left it clean. More realistically, the tea brewer had probably not been cleaned the entire summer. When I was there, I pointed out that no effort had been made, despite constant reminders, to make sure they were getting adequate organism coverage on the leaf surfaces. They had no idea if the brown liquid they were putting out was really tea. This is in contrast to numerous clients of ours who have checked their first two or three tea brews and learned that they need to do to make top-notch tea and get excellent leaf coverage. There were other possible problems, such as not applying the tea at the correct rates. For example, on Jackson golf course, the FIRST tea application was not made until after July 4. In the Pacific Northwest, all those ugly fungal patches, take-all, molds, and root-feeding grubs are well-established by mid-summer. To expect compost tea to take care of all the fungicide that has been sprayed up until then, much less all the diseases already well-established by that point is just ludicrous. The compost tea organisms have to establish BEFORE the "bad-guys". During my second trip to talk with these people, at the end of the season, when I was standing on a green riddled with horrible patches of disease, it was revealed that when the head superintendent was away on vacation, the person left in charge had decided to use chemicals on the supposed "tea-greens". It was after that point that the tea had failed. Hum, I wonder why? So, is it fair to suspect that there was a hidden agenda operating during this study? At the beginning of the compost tea study in Seattle in 2001, I was threatened with a lawsuit just for saying that I work with Jim Moore, from Texas, who does consulting on golf courses, and has studies going on USGA greens. When questioned whether Jim had a Ph.D., I said I wasn't aware that Jim Moore had a Ph.D. But a golf course employee called Dr. Moore and told him I had claimed that I worked closely with him. Dr. Moore became so angry he threatened me with a lawsuit. [more vendor gibberish deleted] -- "Of what are you afraid, my child?" inquired the kindly teacher. "Oh, sir! The flowers, they are wild," replied the timid creature. -from Peter Newell's "Wild Flowers" See the Garden of Paghat the Ratgirl: http://www.paghat.com/ |
#43
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Help with Compost Tea
In article , newsgroup wrote:
On 10 Sep 2003 12:04:40 -0700, (Fleemo) wrote: I just want to know if I'm wasting my time in preparing a batch of the brown liquid if my primary goal is to feed my plants. A letter posted today on yahoo groups compost-tea: [fabulously loony vendor gibbering deleted -- follow thread back if you missed that amazingly exhibition of "why science isn't real"!] Yowza Tom!, I sure hope you reposted that as a hilarious example of the muddy supernatural thinking of VENDORS trying to hornswoggle you into believing complete & utter nonsense, leaving out even moderate scientific content while insisting the scientists are universally wrong & real-soon-now the vendor organizations will be publishing the truth! It's too damned bad that so many people promoting organic gardening do so with a line of products which defines what is "good." It's downright weird that someone with Ingraham's educational background keeps telling people not to believe the science, to believe the vendor editorials instead. As Dr Ingaham is one of the big-cheese VENDORS selling all manner of books, CDs, audio tapes, manuals, services, & workshops, she may be assumed to perfectly represent the VENDOR perspective on why you should spend money on services & junk such as her company sells. Funny she has been peddling this stuff a long time now, & has all the minor university affiliations one would require to be taken seriously, and STILL pretending "real soon now" her own COMPANY research on aerobic teas will be appearing in yet-to-be-named scientific journals, but in the meantime you can buy the reports in her self-published booklets & tapes. She has published a great deal on this topic, none of it peer-reviewed, all of it is promotional, none of it scientific, most of it is self-published. But not until you reposted her "letter" did I realize she was actually crazy -- I thought she was just a hack trying to make a buck on the side, not that she actually needs to commit herself to an asylum. I found a dozen outright fabrications & deceptions in her screed before I stopped counting, but when it REALLY gets loony is when invents that idiotic story about the REASON that field tests show aerated teas have no effect on pathogens is because the researchers sneak into the fields when no one can see them and POISON THEIR PLANTS ON PURPOSE so that the scientific evidence will be negative & against compost tea effectiveness. Zowwy! That one reminded me of a schizophrenic who told me her doctor could see her through the walls of her apartment & snuck into her room at night stealing her thoughts. This is one of the big "leaders" in the commercialization of compost teas & associated services for extravagant fees -- & she turns out to be certifiably nuts! I also liked her stuff about scientists having a a secret "HIDDEN AGENDA" so nefarious & sinister she cannot make sense of it even to herself let alone to her letter's readers. But what is certain, you can't trust the scientists -- you can trust only the vendors & herself for the truth. Some of the merely deceptive & lying stuff in her Letter, as opposted to the paranoid bits against scientists, include: 1) She repeats the old lie about compost teas being a great source of nematodes. A small lie as her lies go, but it's interesting that about three-fourths of the vendors have stopped telling that one since too many people found out it isn't so. 2) She notes that science is your enemy in these matters "because the weight of tradition" counts for more than emperical evidence or controled studies. 3) She repeats the common vendor explanation for why all the field studies show aerated compost tea has no effect above that of plain water in controlling pathogens: It wasn't "real" compost tea! (Which apparently is so magical only mystic covens of brewers know how the "real" teas are made, horticultural station researchers sure can't figure it out.) 4) Riddles her screed with sound-bite ideas that are completely nonsensical, like "compost tea works just like asprin" -- avoiding the simplest logic. 5) Lyingly rephrases the extant science to make it sound as crazy as she is. 6) Lies outright that she can teach methods of absolute consistency for consecutive batches of teas then says it doesn't even need to be tested to see if it is as consistent as she claims, if you used the right commercial equipment. 7) Claims that compost teas are actually DANGEROUS if you don't learn the methods she promotes & buy the right equipment she has tested (that's a new one! Most vendors don't want to link compost tea to the idea of dangerousness -- since by & large it isn't dangerous at all, other than contributing to wetlands problems -- but I can see that someone who charges up the wazoo for compost tea workshops called "seminars" would want to create another level of tea mythology, that without her personal input you'll kill your plants). 8) Contradicts six peer-reviewed published studies that show compost teas quickly wash out of soils before plants are benefited, so can contributte to groundwater pollution, & replaces that reality with a slight-of-hand version about compost pile leachates. 9) Claims that "real" compost teas can only be made with expensive (but in fact cheaply manufactured) commercial devices invented in the last five years -- that's a new one too, as most other vendors claim only that their products make it easier (which they don't) rather than it can't even be done without their expensive b-s plastic tubs & absurdly overpriced bubblers. 10) Uses the "baby with the bathwater" argument as back-up in case the lies don't work -- cuz even if everything the peer-reviewed science has shown to be factual really is factual, you should still use the teas for purposes it is no good for because otherwise you're throwing the baby out with the bathwater. 11) Is still after all this time making excuses for herself when she got caught in the past lying about having worked with Dr. James Moore on a major research project -- got in trouble for trumping up credits for herself & later changed it to having worked with a golf course groundskeeper named Jimmy Moore -- because "I didn't lie! There's more than one Jim Moore in this world!" -- as if working with a golf course guy would've been worth boasting about in her sales pitches. I wonder how much of the rest of her curriculum vitae was equally cooked up & if push comes to shove would turn out to have something to do with some unspecific guy named Jimmy at a golf course instead of at the half-dozen universities she purports. (Of course, the reason someone bounces around from one hinterland university to another in rapid succession is because of a failure to do anything sufficient credible to gain tenure -- "research" issued through vanity presses doesn't even get your contract renewed.) Well, I'm glad at least that the advocates of this stuff are so obviousy shy a few bricks that anyone of merely average intelligence will raise a brow. Just please tell me you DID laugh your ass off reading at least the they're-out-to-getme, scientists are evil revelations, & reposted it for laugh value & not because you personally fell into the rhythm of it & started to think there really is a world-wide cabal of evil scientists out to destroy her & the whole "tradition needs no science" compost tea industry. -paghat -- "Of what are you afraid, my child?" inquired the kindly teacher. "Oh, sir! The flowers, they are wild," replied the timid creature. -from Peter Newell's "Wild Flowers" See the Garden of Paghat the Ratgirl: http://www.paghat.com/ |
#44
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Help with Compost Tea
In article ,
(Fleemo) wrote: Well, it's obvious that these are two superior minds who are permanently ensonced on their respective sides of the fence. At this point, the main question in my mind is whether or not compost tea serves as a good nutrient boost for my garden. If you only use it as a subsitute for non-organic liquid fertilizer, then you're doing no harm. It's not as good as topcoating with an organic compost, but it's a damned sight better than non-organic compounds. It is when it gets into the areas of being BETTER than other organic methods, or of preventing pathogenic problems in the garden, that the science informs you the opposite is true. I wasn't aware of any cure-all claims for the potion, nor was I aware that it was even available commercially. I just want to know if I'm wasting my time in preparing a batch of the brown liquid if my primary goal is to feed my plants. If it doesn't smell bad, it's harmless. Even if it stinks it probably won't do THAT much harm, but the odor is from bacterial wastes & even the outside-chance of adding beneficial microbes to the soil is shot to hell. -paghat the ratgirl Thanks for your well-informed posts. -Fleemo -- "Of what are you afraid, my child?" inquired the kindly teacher. "Oh, sir! The flowers, they are wild," replied the timid creature. -from Peter Newell's "Wild Flowers" See the Garden of Paghat the Ratgirl: http://www.paghat.com/ |
#45
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Help with Compost Tea
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