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Life Sciences Commons

Open Access. Powered by Scholars. Published by Universities.®

2014

Agriculture

Agronomy Publications

Labile nitrogen fractions

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Full-Text Articles in Life Sciences

Particulate And Active Soil Nitrogen Fractions Are Reduced By Sheep Grazing In Dryland Cropping Systems, Upendra M. Sainju, Joy L. Barsotti, Andrew W. Lenssen, Patrick G. Hatfield Jul 2014

Particulate And Active Soil Nitrogen Fractions Are Reduced By Sheep Grazing In Dryland Cropping Systems, Upendra M. Sainju, Joy L. Barsotti, Andrew W. Lenssen, Patrick G. Hatfield

Agronomy Publications

Sheep (Ovis aries L.) grazing, a cost-effective method of weed control compared to herbicide application and tillage, may influence N cycling by consuming crop residue and weeds and returning N through feces and urine to the soil. The objective of this experiment was to evaluate the effect of sheep grazing compared to tillage and herbicide application for weed control on soil particulate and active soil N fractions in dryland cropping systems. Our hypothesis was that sheep grazing used for weed control would increase particulate and active soil N fractions compared to tillage and herbicide application. Soil samples collected at the ...