tomato leafminers | Vegetable gardening | Urban Gardening, Terrace gardening and Hydroponics

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tomato leafminers
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gard
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April 21, 2016 - 7:58 pm
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My tomato leafs have got leafminers. I pluck those leaves but they still keep coming back. I added (neem leaves, green chillies and garlic boiled to a high temp and cooled and thinned down with water) but they keep coming back. want organic control. Same thing happening with my sunflower (they are a month old). leafminers and mealy bugs. pls advise how to control these two horrible pests in a organic way.thanks

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geekgardener
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April 22, 2016 - 8:23 am
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Leafminers come via flies(moth) that lay eggs in the leaves. Inspect the plant early on and remove all the affected leaves. Spinosad is an bio pesticide that can control leafminer. Mealy bug can be solved by using spirit+water mix (1:1) and dabbing on them with a cotton. Use bio pesticide verticilium lecanii, beauvaria bassiana.

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gard
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April 22, 2016 - 10:09 am
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Thanks. By spirit, what exactly do you mean? is it alright to use kerosene? and the bip pesticides you have mentioned, are they organic? thanks

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Emma Santiago
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May 31, 2016 - 3:53 pm
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Natural, and organic control methods work best when fighting leafminer problems. That’s because they don’t harm the naturally occurring beneficial insect populations that largely keep the leafminer and other harmful pests under control. While pesticide use can encourage leafminer outbreaks, natural controls and beneficial insects prevent as well as cure these pest problems. Don’t wait until you spot leafminer tunnels in your plants’ leaves, especially if you’ve had problems with them in the past. Be prepared with the products you’ll need to prevent and destroy infestations. Then stay vigilant.

Monitor plant leaves closely. At the first sign of tunneling, squeeze the leaf at the tunnel between two fingers to crush any larvae. Done soon enough, this killing larvae can allow plants to survive minor outbreaks. Pick off and destroy badly infested leaves in small gardens.
The more healthy the plant, the less chance that leafminers will hurt it. Maintain plant health with organic fertilizers and proper watering to allow plants to outgrow and tolerate pest damage. Keep your soil alive by using compost and other soil amendments.
Use floating row covers to prevent fly stage from laying eggs on leaves.
The parasitic wasp Diglyphus isaea is a commercially available beneficial insect that will kill leafminer larva in the mine. The wasp is especially beneficial to indoor growers of ornamentals and vegetables.
Use yellow sticky traps to catch egg laying adults. Cover soil under infested plants with plastic mulches to prevent larvae from reaching the ground and pupating.
Organic neem oil will break the pests’ life-cycle by preventing larva from reaching maturity. Neem oil may also have repellent qualities and interfere with egg laying activities.
Botanical insecticides can be used to knock down adult insects but have little effect on the protected larval stage feeding inside the leaf.

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June 1, 2016 - 6:23 pm
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thanks a lot for taking the trouble to explain. Thankfully, the problem is under control. 🙂

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