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Browse by Author: J.C. Barker
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Weight-Area Method Spreader System

By: Robert Evans, J.C. Barker, David Crouse Field Calibration Procedures for Solid and Semi-Solid Animal Waste Application Equipment

This publication explains the weight-area method, one of the two methods in which solid or semi-solid applicators can be calibrated. Proper calibration is required by law.

Dairy Manure as a Fertilizer Source

By: Joe Zublena, J.C. Barker, D. Wesen SoilFacts

This factsheet explains how to use dairy manure as a fertilizer source. Included are descriptions of nutrient content, application rates and application methods to ensure optimum benefit from the manure. A worksheet is provided for calculating application rates.

Load-Area Method Spreader System

By: Robert Evans, J.C. Barker, David Crouse Field Calibration Procedures for Semi-Solid Animal Waste Application Equipment

This publication explains the load-area method, one of the two methods in which semi-solid animal waste applicators can be calibrated. Proper calibration is required by law.

Center Pivot and Linear Move Irrigation System

By: Robert Evans, J.C. Barker, Jonathan Smith, R.E. Sheffield Field Calibration Procedures for Animal Wastewater Irrigation Equipment

This publication contains step-by-step guidelines for field calibration of center pivot and linear move irrigation systems. Proper calibration is required by law.