When farmers used pesticides such as DDT and malathion, there was little understanding of how dangerous and long-lasting these chemicals are. Mass production farms rely on synthetic pesticides, however, because they are cheaper than organic ones. Many farmers will not use synthetic pesticides, and some consumers will only buy organic produce. Older pesticides such as DDT killed bald eagles, birds, fish and even people (Carson). They penetrate to groundwater, pollute streams and harm wildlife, including natural predators of the targeted pests. Almost 98 percent of sprayed pesticides do not reach their targets. This 'pesticide drift' occurs when pesticide dust and spray travel by wind to places unexposed to pesticides. Humans come in contact with dangerous pesticides on food, in water and in the air near farms. However, they pose serious threats to the environment and to people. Synthetic insecticides such as organophosphates are important, effective tools in modern crop management. BackgroundĪgricultural crops are under constant assault by insect pests, making insecticides essential to reduce losses. Which begs the question: Do we want organic produce or plentiful produce? This question inspired my science project theme: Can insecticides be created out of natural substances? Organic, plant-based pesticides that rely on plants' natural defenses against insects may not only be effective and inexpensive for protecting crops, but also safer and more environmentally friendly. However, the killers we cannot evade are insects. We weed-whack, fence, and cover our plants to keep them from rabbits and deer. By Kalia, Grade 8, New York, 2011 YNA Winner IntroductionĮvery year my family and I wage a constant war for homegrown fruits and vegetables.

Insecticides and pesticides for plants