Write about the affects about pesticides in our water, what we can do about it and anyother information you can add on
Cultivation of crops both for food and economic purposes has for a very long period been the main activity for the human population. The human population has also grown and the living standards increased, therefore demand for food has also increased. To meet this demands, there is a need for expansion and intensifying agricultural activities. The use of pesticides has become a common practice in most parts of the worlds, and according to Wyoming, Department of Agriculture and U.S. Geological Survey (2) 5.2 billion pounds of pesticides are used worldwide per year. However, along with their effective mitigation of the pests, there are several concerns that have accompanied the use of pesticides and their likely adverse effects on the well-being and the environment. The greatest concern on the use of the pesticide has been the unintended adverse effects through contamination of the Earth’s hydrologic systems. These systems play a vital role in supplying water for both natural ecosystems and mankind. This paper discusses the effects of contamination of these hydrologic systems by pesticides.
According to U.S. Geological Survey (1), about 12 percent of the world’s total land area is under cultivation. This percentage represents 1.5 billion hectares of cultivated land with 277 million hectares under irrigation (U.S. Geological Survey, 1). In irrigation, most of the water used is from surface water storage such as reservoirs, river diversions, and other water distribution systems. However, in some parts of the world, aquifers are an important part of the irrigation system where they provide groundwater. Groundwater irrigates about 100 million hectares (Molden, 4). About half of the U.S. population depend on groundwater for drinking water. Groundwater is located below the surface in spaces within sand, soil, rocks, sediment, and gravel. The groundwater was found to contain pesticides as the soil was found not to prevent pesticides and other chemical compounds from reaching groundwater.
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