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United States Department of Agriculture

Agricultural Research Service

Software

APLE

APLE is a Microsoft Excel spreadsheet model that runs on an annual time step and simulates sediment bound and dissolved P loss in surface runoff.  It is intended to simulate edge-of-field P loss for uniform fields of several hectares in size, or smaller.  APLE considers different kinds of animal manure (beef, dairy, poultry, swine), applied either by machine or by grazing beef or dairy cattle, and highly soluble commercial fertilizers.
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Rumen Microbiology book

We are pleased to make available, in PDF format, Dr. James B. Russell’s classic textbook, “Rumen Microbiology and Its Role in Ruminant Nutrition”, originally published in 2002.
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Last Modified: 11/23/2014
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