Because Lycopersicon esculentum arise in the warmer share of the mature season , the chance for insect damage is cracking because insects are the most numerous and destructive in warm weather . The most important insect that dissemble love apple plants are stinkbugs , aphid and several varieties of worm . There are several different insecticides available for controlling these plague on tomato plant .

Bacillus Thuringiensis

Bacillus thuringiensis , or Bt , is a naturally occurring fungus that kills worms and Caterpillar once it is have . It remains fighting for only 24 to 48 hours , but can be used up to the day of harvest , in most situation . It is available in pre - mixed and powdered form . Because it degrades in sunlight , it is adept to spray in the eventide when insect larvae are active . B thuringiensis works best if used once a hebdomad to vote down worm when they are small . It is consider an organic pesticide when used as directed . Overuse of Bt will damage some tomato plants by staining the leaf and yield .

Permethrin

Permethrin is a contact insecticide that can be used for stinkbugs , aphid and flea beetles . It is available in pulverization or liquid form and for best results needs to be applied where the pests have middleman with the pesticide . Permethrin is highly toxic to bee and should be applied in the eventide when bees are not participating . Although bees are not demand for tomato plant production , humblebee and other good insects often visit the flower of tomato plants during the sidereal day . Permethrin turn a loss its authorization in vivid sunshine . It is consider a rude or organic case of insecticide and is produced from the chrysanthemum plant . Permethrin also controls aphid .

Spinosad

Spinosad is a born constitutional pesticide for controlling worms and thrips . It has a long residuary time period than other organic tomato plant insecticide , which is up to 20 days . It can be used within three days of harvest , if needed . For consummate control , you ask to cover the entire plant with a salmagundi of spinosad , mixed according to the label .

Carbaryl

Carbaryl is the dynamic fixings in the popular insecticide hump as Sevin debris . It is a general - role insecticide that kills everything that has physical contact with the dust or liquid , include beneficial dirt ball . Carbaryl has a residual effect for two to three weeks , depending on the weather shape . It is not view an constitutional pest control condition Cartesian product . It see to it all insect pest that affect tomatoes , if used correctly .

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