First, it is very important to understand that Bt does not act like a chemical insecticide used are common. Bt control Pests effectively, but the effect was not himself, "Knock Rock Star" is a pest, not killed immediately sprayed. Insects have eaten parts of the plant coated. Bt in quantities large enough to be killed. When BT was not enough. Toxic protein crystals are made of. Mouth and stomach of the worm paralyzed the pests began to move slowly. And stopped to eat at a few. Minutes to an hour after exposure to the toxic enough to destroy the wall of the abdomen of insects in an hour, making Bt spores and fragments of stomach bug slipped through. Into the space of the body is dead insect pests. Due to lack of food And signs of blood poisoning and / or osmotic shock within 24 - 48 hours some worms that die due to Bt may be pale. Or turn black Dead worms often wrinkled. And fall from the plant can not be observed easily.
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