Root Zone Water Quality Model
Root Zone Water Quality Model

Author: Lajpat Ahuja

Publisher: Water Resources Publication

Published: 2000

Total Pages: 388

ISBN-13: 9781887201087

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This publication comes with computer software and presents a comprehensive simulation model designed to predict the hydrologic response, including potential for surface and groundwater contamination, of alternative crop-management systems. It simulates crop development and the movement of water, nutrients and pesticides over and through the root zone for a representative unit area of an agricultural field over multiple years. The model allows simulation of a wide spectrum of management practices and scenarios with special features such as the rapid transport of surface-applied chemicals through macropores to deeper depths and the preferential transport of chemicals within the soil matrix via mobile-immobile zones. The transfer of surface-applied chemicals (pesticides in particular) to runoff water is also an important component.

Agricultural Resources and Environmental Indicators, 1996-97
Agricultural Resources and Environmental Indicators, 1996-97

Author: Margot Anderson

Publisher: DIANE Publishing

Published: 1998-05

Total Pages: 353

ISBN-13: 0788149032

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Takes stock of how natural resources (land & water) & commercial inputs (energy, nutrients, pesticides, & machinery) are used in the agricultural sector; shows how they contribute to environmental quality; & links use & quality to technological change, production management practices, & farm programs. Provides a comprehensive source of data & analysis on the factors that affect resource use & quality in American agriculture. Examines the economic factors that affect resource use, & estimates the costs & benefits (to farmers, consumers, & the government) of meeting conservation & environmental goals. Charts & tables.