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Browse by Author: John Havlin
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Soil and Plant Analysis for Apple Trees

By: John Havlin SoilFacts

Nutrient analysis of soil and plant tissue should be an integral part of any tree crop management plan. While this publication was designed for apple growers, the principles outlined here may be easily applied to other tree crops.

Soil and Plant Analysis for Christmas Trees

By: John Havlin SoilFacts

Nutrient analysis of soil and plant tissue should be an integral part of any tree crop management plan. While this publication was designed for Christmas tree growers, the principles outlined here may be easily applied to other tree crops.

Use of On-Farm Records for Modifying a Certified Animal Waste Management Plan

By: David Crouse, John Havlin SoilFacts

Changes in the interpretation of North Carolina water quality rules and technical standards allow for the use of on-farm records in the development of waste management plans. This publication describes the use of such records, citing examples. The use of on-farm records can work to an animal producer’s benefit by providing more site-specific information about how an animal waste management system should be operated, particularly with respect to the number of acres of crops necessary to properly utilize the nutrients (mainly nitrogen) in the wastewater.

How Rising Fertilizer Prices Affect Optimum Nitrogen Rates

By: John Havlin, Geoff Benson SoilFacts

This publication helps farmers decide whether to reduce fertilization rates in order to achieve maximum profits due to increases in nitrogen fertilizer prices.