Pesticides are intended to be harmful. They kill pests, diseases and weeds. But some also harm humans and wildlife. Pesticides are a huge global business, worth around US$45 billion. Each year, 3.5 billion kilogrammes of pesticides are applied to food crops and their use is growing. Much use of this use is at best ineffective and at worst outright harmful.
In recent research we showed that farmers in Asia and Africa have been able to cut the use of pesticides while boosting crop yields, reducing costs and delivering healthier profits. Even the landscape surrounding the farms benefits. Each kilogramme of pesticide used in agriculture imposes €3-15 (US$4-19) of external economic costs on the environment, wildlife and human health – money spent by water companies to remove them from drinking water, for instance, or the loss of valuable pollinating insects. https://theconversation.com/cut-pesticide-use-to-boost-yields-its-worked-for-millions-of-farmers-in-asia-and-africa-38951?utm_medium=email&utm_campaign=Latest+from+The+Conversation+for+30+April+2015+-+2699&utm_content=Latest+from+The+Conversation+for+30+April+2015+-+2699+CID_1036aabe3f67eb76fe2fa0cb82c779c6&utm_source=campaign_monitor_uk&utm_term=Cut%20pesticide%20use%20to%20boost%20yields%20Its%20worked%20for%20millions%20of%20farmers%20in%20Asia%20and%20Africa
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9-2-16 Naled eventually breaks down after spraying into dichlorvos (another organophosphate insecticide), which has been shown to interfere with prenatal brain development. In laboratory animals, exposure for just 3 days during pregnancy when the brain is growing quickly reduced brain size 15 percent.
Dichlorvos also causes cancer, according to the International Agency for Research on Carcinogens. In laboratory tests, it caused leukemia and pancreatic cancer. Two independent studies have shown that children exposed to household “no-pest” strips containing dichlorvos have a higher incidence of brain cancer than unexposed children.
Aerial applications of naled can drift up to one-half mile. According to the U.S. Environmental Protection Agency, naled is moderately to highly toxic to birds and fish. It also reduced egg production and hatching success in tests with birds and reduced growth in tests with juvenile fish.
Exposure to naled has multiple effects on behavior. In a study conducted by naled’s manufacturer, naled caused reduced muscle strength, slow responses to stimulation, and reduced activity in rats. These behavioral changes occurred at all but the lowest dose level tested in males and all dose levels tested in females, suggesting that females are more sensitive than males to naled poisoning.
Exposure to naled’s breakdown product dichlorvos causes increased aggression and impaired memory. A study by biochemists found that fighting aggression was increased about 5 times. http://thefreethoughtproject.com/millions-bees-killed-zika-spraying-naled/#WLEXvHfYo2s0c4gC.99