Information and discussion regarding garden diseases, insects and other unwelcome critters.
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June 12, 2016 | #31 | |
Tomatovillian™
Join Date: Apr 2016
Location: VA - Zone 7A
Posts: 344
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You rock man... |
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June 13, 2016 | #32 |
Tomatovillian™
Join Date: Apr 2016
Location: VA - Zone 7A
Posts: 344
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We did a little bit of work yesterday to our 20 tomato plants. I hope to have a lot more tomato plants next year. Anyway once we removed all the weeds we pruned them all up. They were very bushy and growing really good. It seemed like such a waste on all the extra growth. So off everything came up to the first fruit set. Then we bobbed some of the very long top leaves so they wouldn't touch the ground as well (AKA Rutgers). We then side dressed with a little compost & 17-17-17. Then we staked out all of the plants. Then we took 2nd cut hay and mulched the 4 little rows we have. In the hopes of not getting any dirt up onto the plants. Then of course we watered them in and I didn't see a bit of dirt splash up onto them at all.
The hay came from a family friend about 2 miles up our dirt road. They were out bailing the second cutting when we picked it up. So the hay is really green and fresh. While we were there my girl was asking about the chemicals they use on the hay. Well they told us that no chemicals are ever used on first and second cutting. That only the third cutting would get fungicide and that's the way it's been forever. So after all that work last night I figured we better not spray anything. I didn't want to put to much pressure on the plants after all that we done to them. So I am going to start our spray program up for the year tonight if all looks well. I hope to start out with the bleach then follow up with daconil tomorrow morning. Then of course the insecticide maybe on Wednesday. I hope this all turns out well. Since we are in our first year we sure are learning. All of our neighbors say we are doing really well for a first year garden in a clay soil. |
June 13, 2016 | #33 |
Tomatovillian™
Join Date: Apr 2011
Location: Fort Worth, TX
Posts: 329
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Might have read the 2" bit here
http://www.caf.wvu.edu/kearneysville...aseweather.htm MSU gets into some other ones http://msue.anr.msu.edu/news/the_cha...g_rainy_spells In general both BT and spinosad are natural products and can be certified for organic pest control in the US OMRI for organic commercial production. Although it will work on hornworm, I cannot support replacing BT with spinosad for them. BT works fine for hornworms. BT is a certain specific bacteria, or it's spores, with toxin in solution. If a catapiller eats some leaf with BT on it, the bacteria toxin activates, the worm stops feeding, and dies. It only works on catapillers, and only if they eat it. So, BT does not hurt beneficial insects, aquatic life, mammals etc (check the label) http://web.utk.edu/~jurat/Btresearchtable.html https://en.wikipedia.org/wiki/Bacillus_thuringiensis Spinosad is a mix of two already produced and processed toxins from a different bacteria. It kills most insects that eat it, especially the larva. Also labeled for thrips, leafminers, ants, others, (check the label). It can kill beneficial insects, but not mammals, (it is in some dog flea pills, and head lice treatments, more) There is also a maximum number of applications per year, check the label, and probably a "no harvest" time period after application (PHI, check the label) https://en.wikipedia.org/wiki/Spinosad So if all you need to treat for is catapillers (hornworms), BT by itself works really well, has no harvest interruption and no maximum applications per year, is not toxic to beneficials, mammals, or aquatic life I never had enough leaf miners on tomato to treat for them, but if/when I get more thrips than blue sticky cards can manage, spinosad is labeled for them, and applied early in the morning or early evening, before/after honey bee activity it works well enough. It has a very short harvest interruption (1 day PHI check your label). I have to mange frequency, maybe back to back applications a week apart as needed up to six . Only applied twice so far this year. I hear that beneficial nematodes may work even better than spinosad on thrips
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500 sq ft of raised rows zone 8a Last edited by decherdt; June 13, 2016 at 03:05 PM. Reason: correction that the toxin is with the BT spores, add link |
June 13, 2016 | #34 |
Tomatovillian™
Join Date: Mar 2014
Location: Greenville, South Carolina
Posts: 3,099
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June 13, 2016 | #35 | |
Tomatovillian™
Join Date: Apr 2011
Location: Fort Worth, TX
Posts: 329
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Quote:
I really only mentioned it to demonstrate a "tank mix", I don't think I can recommend it specifically. Many products can be applied together as a tank mix. Some cannot be. I do apply BT mixed with Daconil as a tank mix.
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500 sq ft of raised rows zone 8a |
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June 13, 2016 | #36 |
Tomatovillian™
Join Date: Apr 2011
Location: Fort Worth, TX
Posts: 329
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Not sure I can tell the difference, maybe like Daconil or copper, it probably works ok but not a silver bullet, I don't see big effect during a raging fungal apocalypse we get when it rains 26 out of 30 days. It is labeled for tomatoes. As it is systemic, it is rain fast.
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500 sq ft of raised rows zone 8a |
June 13, 2016 | #37 |
Tomatovillian™
Join Date: Apr 2011
Location: Fort Worth, TX
Posts: 329
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You have a great looking set up and have done yourself mucho good with your wide spacings and mulching. Plus, first year soil won't have years of built up tomato fugal spores. "Bottom water" and it should be a good season, good luck.
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500 sq ft of raised rows zone 8a |
June 17, 2016 | #38 | |
Tomatovillian™
Join Date: Apr 2016
Location: VA - Zone 7A
Posts: 344
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Quote:
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June 17, 2016 | #39 |
Tomatovillian™
Join Date: Apr 2016
Location: VA - Zone 7A
Posts: 344
|
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June 17, 2016 | #40 |
Tomatovillian™
Join Date: Jun 2012
Location: Illinois, zone 6
Posts: 8,407
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I'm waiting on my Spinosad to arrive. I also ordered a spreading agent called SM-90. People are saying the SM-90 by itself will kill whiteflies, probably from a soap-like effect.
SM-90 ingredients: 1% Coriander Oil 94% Sulphonated Canola Oil Solution 5% Triethanolamine https://en.wikipedia.org/wiki/Triethanolamine Triethanolamine is used primarily as an emulsifier and surfactant. It is a common ingredient in formulations used for both industrial and consumer products. The triethanolamine neutralizes fatty acids, adjusts and buffers the pH, and solubilises oils and other ingredients that are not completely soluble in water. |
June 17, 2016 | #41 |
Tomatovillian™
Join Date: Mar 2014
Location: Greenville, South Carolina
Posts: 3,099
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Spinosad worked great for me, the only thing I find odd is you can only spray a few times per year. But so far I've not seen anymore thrips.
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June 17, 2016 | #42 |
Tomatovillian™
Join Date: Jun 2012
Location: Illinois, zone 6
Posts: 8,407
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you can only spray a few times per year.
I did not realize that. What is the rationale? |
June 17, 2016 | #43 |
Tomatovillian™
Join Date: Mar 2014
Location: Greenville, South Carolina
Posts: 3,099
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No idea. I think the limit was 4 or 5 for vegetable crops.
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June 17, 2016 | #44 |
Tomatovillian™
Join Date: Mar 2015
Location: Raleigh, NC
Posts: 205
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I sprayed Spinosad for the third time yesterday. On the first application, dozens of whiteflies per plant would take flight. Second application there were only a few per plant. Last night I did not see any living whiteflies. Spinosad appears to be significantly more effective than neem oil for this pest. I have now sprayed three times over the course of their full lifecycle.
I only had whiteflies in the greenhouse, on kale and mustards. They haven't touched tomato or pepper plants. Last edited by fonseca; June 18, 2016 at 01:50 AM. Reason: typo |
June 17, 2016 | #45 |
Tomatovillian™
Join Date: Apr 2011
Location: Fort Worth, TX
Posts: 329
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Resistance management. Too many applications per season and thrips develop restistance.
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500 sq ft of raised rows zone 8a |
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