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#17
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Best way to increase Nitrogen quickly.
jhultman wrote in
news:1059412409.120754@sj-nntpcache-3: Prompted by poor size on the tomatoes... I bought a soil test kit and found that PH is 6.5 7.0 = Generally Acceptable. P and K were high but N is depleted. Which explains the poor fruit sizes? My romas are the size of a large marble, tomatillos too. Other tomato varieties size are less than expected... This is the first time this ground had been set up as a bed. Previously is sat covered with plastic and tan bark for ten + years. In preparing this 160 square ft. bed I started with about 3 cubic yards of compost added and rototilled in. Put some lime in the soil and tilled that in with the compost... Without having to resort to chemical fertilizers, what would be a good way to increase N so the remaining growth cycle of the vegetables will benefit? Reading up on it I find info that says to add 28 - 30 oz of N fertilizer per 100 sq. feet. But what I'm not sure about is if the granular stuff in the box at the garden center is most beneficial. Any suggestions appreciated. Thanks, Jeff San Jose, Calif. z 8. Here's a thought ... if the tomatoes really are nitrogen deficient, wouldn't the leaves also turn yellow, starting at the bottom? |
#18
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Best way to increase Nitrogen quickly.
jhultman wrote: Prompted by poor size on the tomatoes... I bought a soil test kit and found that PH is 6.5 7.0 = Generally Acceptable. P and K were high but N is depleted. Which explains the poor fruit sizes? As others have mentioned, most home soil testing kits are a waste of money and even in professionally tested samples, nitrogen levels are extremely difficult to assess accurately. And as others have already mentioned, adding supplemental nitrogen at this point is unlikley to do anything significant for your fruit. If this is the first time use of this bed for many years, the soil is likely uniformly deficient in the soil organisms which provide much of the nitrogen in the soil. 3 yards of compost as an amendment sounds good, but a starved soil will soak that up without effort and ask for more. Plant a cover crop this winter that is a nitrogen fixer - fava beans, red clover, vetch - then till it in in the spring. Continue to amend each season with composted manure as well. Rebuilding the soil is not a quick process. Vegetables and other small fruiting crops have high nutrient demands and benefit from supplemental fertilizing duirng the growing season. There are lots of good organic fertilizers you can use - balanced ones that contain all three of the essential nutrients as well as those which are heavy on the nitrogen end like kelp meal, alfalfa meal, bat guano, feather meal, etc. I feed my tomatoes with an organic rose fertilizer from Dr. Earth - I always get great crops in our very short tomato season. pam - gardengal |
#19
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Best way to increase Nitrogen quickly.
"paghat" wrote in message news fish emulshion Stinky, stinky, stinky fishy lawns & gardens, & me without a clothespin for my nose! I think it's all deodorized now. The stuff I bought is. No fishy smell. I wonder how they remove the stink? karen |
#20
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Best way to increase Nitrogen quickly.
"NewsUser" wrote in
: jhultman wrote in news:1059412409.120754@sj-nntpcache-3: Prompted by poor size on the tomatoes... I bought a soil test kit and found that PH is 6.5 7.0 = Generally Acceptable. P and K were high but N is depleted. Which explains the poor fruit sizes? My understanding is that N will always show low on soil tests. Plants use lots of it and what's left over eventually leaches out of the root zone (and possibly into the groundwater). Others are correct about taking care not to add too much nitrogen to tomatoes or you'll get lots of green and little fruit. You can add nitrogen back to the soil by fixation or fertilization. Legumes take atmospheric nitrogen from air in the soil and convert it to a form plants can use. That might not help you right now though. You can use organic fertilizers like fish emulsion or fresh manure if you don't want to go with a processed fertilizer. Best suggestion is to contact an extension agent for advice since they are familiar with your climate and soils. Oh yeah, I forgot, I read somewhere (might have been on a 10-10-10 package) that the nitrogen is highly soluble and will wash through the soil rather quickly (while the P & K stick near the surface), so your soil test may reflect that, depending on the depth your sample came from. If you're looking for a quick fix, I've heard of people using cheap dry dog food. I've never done it myself. |
#21
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Best way to increase Nitrogen quickly.
In article , Salty Thumb
wrote: If you're looking for a quick fix, I've heard of people using cheap dry dog food. I've never done it myself. Never heard of that, but it's actually quite fascinating, as indeed it includes many of the same rendering-plant gross-out garbagy ingredients that are elsetimes used as fertilizers, except a half-peg higher in the chain so not quite as leached of nutrients as would be fish or bonemeal for gardens. And not inconceibably better as a fertilizer than as a dogfood. -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/ |
#22
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Best way to increase Nitrogen quickly.
jhultman wrote in message news:1059412409.120754@sj-nntpcache-3...
This is the first time this ground had been set up as a bed. Previously is sat covered with plastic and tan bark for ten + years. In preparing this 160 square ft. bed I started with about 3 cubic yards of compost added and rototilled in. Put some lime in the soil and tilled that in with the compost... Covered with plastic for ten years? That soil was probably deader than Elvis. You will just have to wait until it recovers. You can probably try everything in the book to speed recolonization of the bed, but they all more or less start with massive amounts of organic material plus time. I would put more organic matter on top, since after all that soil is probably dead down a few feet, so I am not sure that your 6 inches of compost have really remediated the bed. Earthworms like manure and leaves, and you may want to make sure there are some earthworms to start with. Mushrooms like wood chips, coffee grounds, and mixed yard clippings (www.fungi.com for edible mushroom inoculants both for mulch and the compost). Everything above except the chips will be gone in several months. Probably growing peas during the winter will help (you can plant them right into the mulch, unless it is badly matted they will come up all right... they might not like a pH of 7.0 though), as will adding some organic high N source to boost levels over the year. Generally, no need to lime in San Jose, specially if the soil is dead already. For this year, foliar feeding will help you get something out of it. |
#23
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Best way to increase Nitrogen quickly.
Home soil test kits are crap. The reason that the Nitrogen reading is low is
because Nitrogen dosent occur naturally in the soil like Phosporus and Potassium. It is water soluble, so any Nitrogen you put into the soil is easily washed away with when it rains or when you water. To put it simply, the easiest way to "increase nitrogen quickly" is to fertilize the plants. toad |
#24
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Best way to increase Nitrogen quickly.
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