Environmental Science 3300F/G Lecture Notes - Lecture 13: Pesticide Application, Mating Disruption, Tree Topping
22 Mar 2018
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Benefits of insecticides: can be applied when needed, effect rapid, new products not persistent, no bioaccumulation with modern insecticides. Integrated pest management: all the means that are available. Neen tree people have been collecting leaves and putting it with grains, (cid:272)ereals, a(cid:374)d it prote(cid:272)ted fro(cid:373) i(cid:374)se(cid:272)ts (cid:894)they did(cid:374)"t know why it worked but they knew it worked: canadian first nations. Classical biological control (cbc): successful approach: when cbc works, it works forever, pest + bc agent = pest control, over 5000 introductions with 2000 exotic species in 196 countries or islands. Need to know the biology: e. g. in california, 2 infestation areas parasitoid (cid:449)orked i(cid:374) o(cid:374)e spot (cid:271)ut did(cid:374)"t (cid:449)ork at all i(cid:374) another was based on climate differences. Ladybugs were introduced as a biological control agent but it has started killing off native species: from biodiversity perspective bad, from farmer perspective indifferent, reflex bleeding in ladybugs destroyed wine production one time (rendered undrinkable)
