SAFS 405 Lecture Notes - Lecture 3: Brassica, Colorado Potato Beetle, Azadirachtin
9 Dec 2017
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Pest: organism considered harmful to the health of human beings, crops and other organisms. Insects as pests: primarily because they feed directly on drops (direct feeding), transmit diseases, nuisance (in the case of livestock, in the case that their daily habits are affected) Ex. aphid on plant stem; cause more damage by transmitting disease, rather than feeding on the plant. Gradual growth: egg nymphs 4-5 instars adults. Plant pathogens are organisms that cause disease. The use of various kinds of technique to prevent pests. You want to emphasize environmental friendliness and the methodology most specific to the pest. Certified organic growers are required to use preventative and cultural methods before chemicals. Use cultural methods to control the pests. Use natural enemies to control pests (biocontrol) Make the environment less conducive to pest and disease problems. Make the environment as favorable as possible for the crop or livestock.
