How should we treat the agricultural wastes?
Answers
Explanation:
Waste management helps to maintain a healthy environment for farm animals and can reduce the need for commercial fertilizers while providing other nutrients needed for crop production. The waste which is reduce , recycle and make it usable for different purpose is a waste management.
Answer:
Soil washed off fields is the largest source of agricultural pollution in the United States. Excess sediment causes high levels of turbidity in water bodies, which can inhibit growth of aquatic plants, clog fish gills and smother animal larvae.[1]
Farmers may utilize erosion controls to reduce runoff flows and retain soil on their fields. Common techniques include:
contour ploughing [2]
crop mulching [3]
crop rotation
planting perennial crops
installing riparian buffers.[4]:pp. 4-95–4-96
Nutrient runoff Edit
Main article: Nutrient pollution
Manure spreader
Nitrogen and phosphorus are key pollutants found in runoff, and they are applied to farmland in several ways, such as in the form of commercial fertilizer, animal manure, or municipal or industrial wastewater (effluent) or sludge. These chemicals may also enter runoff from crop residues, irrigation water, wildlife, and atmospheric deposition.[4]:p. 2–9
Farmers can develop and implement nutrient management plans to mitigate impacts on water quality by:
mapping and documenting fields, crop types, soil types, water bodies
developing realistic crop yield projections
conducting soil tests and nutrient analyses of manures and/or sludges applied
identifying other significant nutrient sources (e.g., irrigation water)
evaluating significant field features such as highly erodible soils, subsurface drains, and shallow aquifers
applying fertilizers, manures, and/or sludges based on realistic yield goals and using precision agriculture techniques.[4]:pp. 4-37–4-38[5]
Pesticides Edit
Aerial application (crop dusting) of pesticides over a soybean field in the U.S.
Pesticides are widely used by farmers to control plant pests and enhance production, but chemical pesticides can also cause water quality problems. Pesticides may appear in surface water due to:
direct application (e.g. aerial spraying or broadcasting over water bodies)
runoff during rain storms
aerial drift (from adjacent fields).[4]:p.2–22
Some pesticides have also been detected in groundwater.[4]:p.2–24
Farmers may use Integrated Pest Management (IPM) techniques (which can include biological pest control) to maintain control over pests, reduce reliance on chemical pesticides, and protect water quality.[6][7]
There are few safe ways of disposing of pesticide surpluses other than through containment in well managed landfills or by incineration. In some parts of the world, spraying on land is a permitted method of disposal.[8][9][citation needed]