The EPA has identified agricultural runoff as the primary source of water pollution. Runoff contains pesticides, fertilizers, and agricultural waste that can have harmful effects on soils. Excessive amounts of phosphates, phosphorus and nitrogen found in fertilizers can cause fish and plant kill, resulting in contaminated soils. Use organic herbicides when gardening, or none at all. Plant native plants, which thrive in local conditions, often making pesticide use unnecessary
o An engineer identifies and isolates a gene that expresses a desired trait, and then inserts it into a recipient plant with a gene gun. The host plant regulates the new gene as it own and passes the trait to its descendants.
The potential benefits of genetic modification include controlled speed of ripening; resistance to pests and herbicides; enhanced taste or appearance; vitamin enrichment; increased crop yields; and drought, cold or disease resistance Preparation of Biofertilizer
Lowering Production Costs
To gain profit from the land, a farmer has to invest in it. Aside from hard work, the farmer must buy seed, maintain equipment, purchase fuel and acquire fertilizer, among other expenses. Fertilizer is a costly input item, exacting $127 per acre for the highest grade nitrogen. By contrast, spreading cow manure at the same rate would only cost $47. Yet manure may require purchasing a different applicator. Biofertilizers can be applied in the same manner as their chemical counterparts. A Philippine government case study recently demonstrated that a farmer can save 50 percent on input costs using biofertilizer
• Food security exists when all people, at all times, have physical, social and economic access to sufficient, safe and nutritious food to meet their dietary needs and food preferences for an active and healthy life.
• Food security for a household means access by all members at all times to enough food for an active,... [continues]
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(2012, 01). Computer Merits and Demerits. StudyMode.com. Retrieved 01, 2012, from http://www.studymode.com/essays/Computer-Merits-And-Demerits-886072.html
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"Computer Merits and Demerits." StudyMode.com. 01, 2012. Accessed 01, 2012. http://www.studymode.com/essays/Computer-Merits-And-Demerits-886072.html.