Oklahoma State University

Contact Info

 

Hailin Zhang
Nutrient Management Specialist
Dept. of Plant and Soil Sciences
Oklahoma State University
368 AG Hall
Stillwater, Oklahoma 74078

Phone: (405)-744-9566

FAX
(405) 744-0354
hailin.zhang@okstate.edu


 

Welcome

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Animal agriculture is a large segment of the economy in Oklahoma. The huge quantities of manure generated by animal feeding operations (AFO's) can be an economical source of plant nutrients and a valuable soil amendment to Improve Soil Quality and Maintain Soil pH. Thus, manure can be a valuable asset to a livestock production operation if its nutrients and organic matter are recycled through land application properly.

Recycling Nutrients graph

 

Manure may cause surface and groundwater pollution if mismanaged. The key to a proper management is to determine the nutrient content of the manure, the percentages of those nutrients that are available to crops, and the nutrient requirements of the crop at a realistic yield goal. These three factors will help you to apply the proper amount (agronomic rate), but the method and timing of application will ensure the effectiveness of nutrient you applied. Best management practices (BMPs) will minimize the impact of manure on the environment.

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