GGR107H1 Chapter Notes -Integrated Pest Management, Brown Planthopper, Crop Rotation
Document Summary
Throughout history there have been pests, insects, and weeds that invade agriculture. Pest: ay organism that damages crops that are valuable to us. The organism is trying to survive and reproduce. Compare the concept of a pest to invasive species. 5. 2. 1 many thousands of chemical pesticides have been destroyed. In canada there are more than 7000 pesticides used. Pest control products act: requires products to be evaluated to insure minimum use. More than billion is spent on pesticides annually, canada spends 1. 5 billion. Pesticides may be toxic to humans and other organisms. Pests will eventually evolve resistance to the chemicals. Even if only a few are able to evolve, they can pass their genes on. Industrial chemists are caught up in an evolutionary arms race where they must continue to develop stronger chemicals. 5. 2. 3 biological control pits one organism against another. Biological control/biocontrol: operate on the enemy of one"s enemy is one"s friend .
