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Great Plains | There are various effective bio insecticides available depending on the target insects. These include various BT strains. BT Kurstaki for caterpillar pests. BT galleriae for scarab, weevil & tenebrionis beetles. Azadirachtin insect growth regulator (a neem seed extract).Purified Neem oil contains only traces of this and would be classified as a botanical oil.Some other plant extracts have insecticidal properties like thyme,gerenol &etc.
Entrust is effective against a number of insect pests.
There are also very effective& very specific insecticidal virus products on the market.The virus products can be very cost effective & it puzzles me why these are not used by nearly everyone.
Beneficial nematodes can also be very effective against various grubs.
I retired earlier this year but am available for fee based consulting.Send me an email.
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bio-control of pest insects in alfalfa
