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Seven dust - Applied a month ago - Still toxic or not ?
Paul J. Dudley wrote:
On Tue, 22 Jul 2008 12:22:28 -0500, Jangchub wrote: On Mon, 21 Jul 2008 20:55:20 -0400, "Paul J. Dudley" wrote: On Mon, 21 Jul 2008 16:28:56 -0500, Jangchub wrote: On Mon, 21 Jul 2008 15:18:03 -0400, "Paul J. Dudley" wrote: Last month ( mid June ) I had applied Seven dust to my grapevine due to Japanese Beatle infestation. I applied by hand ( gloved ). I grabbed a handfull at a time and just tossed it across the whole of the foliage and grape clusters. Here it is mid July and I still see some rather rich deposits of the dust sitting on the clusters. As these grapes ( type unknown ) are reaching ripeness they will no doubt be harvested within the next 2 weeks to make wine. Will the residual Seven dust pose any health threats at this point ? I've tried rinsing with a garden hose but to no avail. It is rather "caked" in some areas. There might have been some moisture on the grapes when I slung the seven dust causing it to do so. TIA Paul I wouldn't eat them. I hadn't planned on eating them. I wish to make wine of them. I might try washing the binches with mild soapy water and see how they look. Hopefully I can get it (Sevin) gone... But if'n that don't do it, I will trash the grapes and not take a chance. = Paul = Okay Paul, if it can systemically enter your skin and cause harmful reactions, don't you know it will also be systemic on the cell walls of grapes? Yes. But I was hoping that a 6 week duration might be long enough for the dust to break down in toxicity. My neighbor puts the stuff on all her greens ( collard, cabbage, turnip etc ). She pounces it on with an old nylon stocking. In fact, she does the same with her corn (at the silk end of the ear just as soon as soon as silk appears). I know one thing. I'll never use Sevin on my grapes again. Don't ever say never. A lot if not most of the vineyards around here (Northern Virginia / Central Maryland Area - including other areas in the Mid Atlantic) use Sevin on their vineyards. Most commercial growers apply with an air blast sprayer so it goes EVERYWHERE. The concentration you used sounds excessive. I still recommend you contact the manufacturer and see what they say. I would still say you can use it (the sevin you mix with water) and spray the top of your canopy with a back pack sprayer. What kind of grapes are you growing and where do you live? The earliest any grapes are ready for harvest around here are some of the whites and some of them are ready around the 2nd week in September. The reds usually are harvested around the end of September with Merlot being the first. The Cabernet Sauvignon hang until mid to late October. I am saying all this because you may have a variety than can hang longer and thus let nature wash off some of the residue. I used to use a Pyrethrin based pesticide ( Tiger Brand ) but haven't seen it at the store this year. It breaks down rather quickly and most veggies can be ingested within a week after it's use. The Sevin was given to me and I tried it. I made a mistake. All I want to know now is ( and I thought that was clear ) has enough time passed to degrade the dust enough or would it still be hazardous ( ... and would washing them be of any use ) . In two weeks I will pick said grapes. I will attempt to wash the bunches by hand. Depending of that outcome, I will either prepare them for wine or if washing doesn't seem to remove the residue I will trash those bunches that won't wash clean. = Paul = There is one other option. You can go ahead and harvest, crush and make your wine and send it out to a lab and have them analyze it for you. They may even be able to tell you in advance what they would recommend without even testing it and charging you. Virginia Tech has a enology program and a lab. You may want to give them a call and state your problem. http://www.fst.vt.edu/extension/enology/index.html |
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