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Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan

Citation:  Paper number  032369,  2003 ASAE Annual Meeting . (doi: 10.13031/2013.14990) @2003
Authors:   Edward. C. Martin, Robert Freitas, Martin Karpiscak, Charles Gerba, Jennifer Jannusch, Donald C. Slack, Michael Ottman
Keywords:   Manure, irrigation, oats, corn, drainage lysimeter, bacteria, nitrate, phosphorus

This study was initiated to determine the biological and nutrient impacts of manure and compost applications on an oat/corn rotation in Central Arizona. Bacterial analysis for E.Coli, Listeria and coliphage and nutrient analysis for nitrogen, phosphorus and electroconductivity were conducted on soil, manure/compost, irrigation water, drainage water and plant samples. The presence of endocrine disruptors was also tested on the irrigation and drainage water. After a single season of oats, there doesnt appear to be any significant increase in the presence of bacteria in the soil-waterplant environment. Endocrine disruptors were detected in drainage and irrigation water samples. Nitrate leaching is occurring but at relatively low rates. Oat forage yields between treatments were all over 10,000 kg/ha and there was no statistically significant difference between them.

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