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Environmental concerns and technological changes are closely interrelated factors in agricultural production. Technical innovations in the form of improved farming practices and new and more intensive applications of chemical inputs have resulted in an upward trend in grain yields. However, the increased usage of chemical inputs such as fertilizers, insecticides, and herbicides may also be significant sources of pollution. Other environmental concerns such as soil loss and the disposal of livestock wastes affect agricultural production capabilities and may degrade soil and water quality. In addition, weather variability causes significant year-to-year fluctuations in_grain yields around trend levels and is one of the most important sources of uncertainty in future grain supplies.

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Center for Agricultural and Rural Development, Iowa State University


Ames, IA


Agricultural and Resource Economics | Agricultural Economics | Agricultural Science | Agriculture | Agronomy and Crop Sciences | Climate | Environmental Sciences | Natural Resources Management and Policy