PSS 021 Lecture Notes - Lecture 6: Micronutrient, Sustainable Organic Integrated Livelihoods, Glyphosate
14 Sep 2017
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Document Summary
Developed process by which we can extract nitrogen from the air and use it to create ammonia. Acme paris green was the first marketed insecticide (arsenic) Glyphosate: an active ingredient found in herbicides, inhibits an enzyme that is essential for plant growth, not present in mammals, poses low-risk to health when label directions are followed. Created a need for herbicide resistant crops. Traditional breeding: desired traits identified in separate individuals of the same species, which are then bred to combine those traits in a new hybrid variety. Interspecies crosses: breeders can also cross different yet similar species. Modern wheat comes from such hybridizations, some of which happened naturally. Genetic modification: genes identified in one species can be transferred directly to an unrelated species, giving it an entirely new trait resistance to pests or herbicides. Two basic methods that have emerged in the late 20th / early 21st century.
