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#1
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Help - leafe miners
Damn it but my young Hmong red cucumbers have leaf miner damage already and
they have only begun to take off. What is the quickest and best way to knock this down? Screw organic, at this rate my plants will all be infected. All I have for now is the organic pesticide/fungicide/ herbicide combos using lecithin and some natural soap. I'll hose it with malathion if I have to. |
#2
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Help - leafe miners
In article ,
"Paul M. Cook" wrote: Damn it but my young Hmong red cucumbers have leaf miner damage already and they have only begun to take off. What is the quickest and best way to knock this down? Screw organic, at this rate my plants will all be infected. All I have for now is the organic pesticide/fungicide/ herbicide combos using lecithin and some natural soap. I'll hose it with malathion if I have to. Bon apatite http://edis.ifas.ufl.edu/mg006 -- Bill S. Jersey USA zone 5 shade garden What use one more wake up call? |
#3
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Help - leafe miners
In article ,
Bill who putters wrote: In article , "Paul M. Cook" wrote: Damn it but my young Hmong red cucumbers have leaf miner damage already and they have only begun to take off. What is the quickest and best way to knock this down? Screw organic, at this rate my plants will all be infected. All I have for now is the organic pesticide/fungicide/ herbicide combos using lecithin and some natural soap. I'll hose it with malathion if I have to. Bon apatite Apatite only has a Mohs Scale hardness of 5. I think I'd want something harder. As for the leaf miners, I'd go right to the propane torch. Nuke 'em ;O), or go for the Sevin 80 WSP, and keep the plant in the house, next to your bed, where you can watch it. http://edis.ifas.ufl.edu/mg006 -- - Billy "Fascism should more properly be called corporatism because it is the merger of state and corporate power." - Benito Mussolini. http://www.youtube.com/watch?v=Arn3lF5XSUg http://www.thirdworldtraveler.com/Zinn/HZinn_page.html |
#4
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Help - leafe miners
On 5/22/10 12:42 PM, Paul M. Cook wrote:
Damn it but my young Hmong red cucumbers have leaf miner damage already and they have only begun to take off. What is the quickest and best way to knock this down? Screw organic, at this rate my plants will all be infected. All I have for now is the organic pesticide/fungicide/ herbicide combos using lecithin and some natural soap. I'll hose it with malathion if I have to. Although not approved for use on edible crops, I would use Imidacloprid, available as Bayer's Advanced Tree and Shrub Insect Control. You mix it with water and use it as a soil drench. Control might take as long as 3 weeks. Unlike many other systemics, tests with Imidacloprid show little or no toxicity for mammals and birds. -- David E. Ross Climate: California Mediterranean Sunset Zone: 21 -- interior Santa Monica Mountains with some ocean influence (USDA 10a, very close to Sunset Zone 19) Gardening diary at http://www.rossde.com/garden/diary |
#5
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Help - leafe miners
In article ,
"David E. Ross" wrote: On 5/22/10 12:42 PM, Paul M. Cook wrote: Damn it but my young Hmong red cucumbers have leaf miner damage already and they have only begun to take off. What is the quickest and best way to knock this down? Screw organic, at this rate my plants will all be infected. All I have for now is the organic pesticide/fungicide/ herbicide combos using lecithin and some natural soap. I'll hose it with malathion if I have to. Although not approved for use on edible crops, I would use Imidacloprid, available as Bayer's Advanced Tree and Shrub Insect Control. You mix it with water and use it as a soil drench. Control might take as long as 3 weeks. Unlike many other systemics, tests with Imidacloprid show little or no toxicity for mammals and birds. 12. This pesticide is highly toxic to birds and aquatic invertebrates http://www.cdms.net/ldat/mp8F5001.pdf Section 4. First Aid Measures Have a product label or container with you when calling a poison control center or doctor, or going to treatment. http://www.afpmb.org/pubs/standardli...-6580_msds.pdf You've already lost the crop, but you can still buy some poi$on. IPM (the organic way) says to anticipate your problems, don't wait until you have a fire in the house to buy a fire extinguisher. You can garden with nature (cheap), or against nature (expen$ive). Consider this your tuition. ------- Cultural Control Prune off and destroy infested branches. Keep plants healthy (properly irrigated and fertilized) so they can tolerate and outgrow the damage. Biological Control Populations are generally prevented from reaching truly damaging levels by a number of parasitic wasps that attack leafminers in Florida. Wasp larvae develop on or in the leafminer larva or pupa, and pupation occurs in or near host remains. In some species, the wasp stings the host, injects a paralyzing venom, lays an egg and its larva develops externally. The host ceases to feed and the parasitoid egg or larva is visible through the leaf epidermis. Parasitoid larvae developing internally are usually solitary, and after several days of development may be seen inside their leafminer host by using a hand lens against strong light. Chemical Control Leafminers are difficult to control because they are protected by the leaf tissue. The best time to manage leafminers is when larvae first hatch inside the leaves and begin to feed, but the damage may be inconspicuous. Treatment at this time also minimizes plant damage. But, if many large or long mines are seen, the leafminer may have completed its development, and control is not useful. -- - Billy "Fascism should more properly be called corporatism because it is the merger of state and corporate power." - Benito Mussolini. http://www.youtube.com/watch?v=Arn3lF5XSUg http://www.thirdworldtraveler.com/Zinn/HZinn_page.html |
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