Discuss the various ways in which off-farm inputs affect air quality.

The use of agricultural technologies affects air quality and air pollution can exert undesirable effects upon agricultural crops and animals. Air is polluted in agricultural activities due to tillage operations, pollutants from open burning, wind erosion and agricultural vehicles used in fields. Harvesting, grain handling and pesticide applications also result in air pollution. During the tilling operation, dust particles from loosening and pulverization of the soil are introduced into the atmosphere. Open burning of crop residues as well as debris from land clearing operations, represents a potentially significant source of air pollutants from agricultural activities. Ground level open burning is affected by many variables, including wind, ambient temperature, composition and moisture content of the debris burned, as well as compactness of the pile. In general, it can be said that the relatively low temperatures associated with open burning increase the emission of particles, carbon ______ __________ ____ __________ ___ ________ ________ _____ ________ ______ __________ __________.
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