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This factsheet for farmers describes concepts, terminology, and guidelines concerning soil sampling. Proper testing allows farmers to apply the correct amount of lime and fertilizer to fields.
This factsheet describes the nutrient composition of poultry manure and land application techniques based on matching the nutritional requirements of the crop with the nutrients available in manure. This publication also includes a worksheet to determine the nutrient needs of your crop.
This factsheet explains the three factors of proper swine manure management: the nutrient content of the manure, the percentages of those nutrients that are available to the plant and the nutrient requirements of the plant.
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.
Phosphorus (P) is the second most important nutrient in crop production but is often found in relatively low amounts in native soils. Decades of fertilizer application have led to P enrichment of most North Carolina agricultural soils. Excess soil P that leaves agricultural fields via runoff and drainage can cause algal blooms in water resources that lead to impaired drinking water quality and can limit recreational activities. Maintaining adequate soil P levels for crop growth can reduce P runoff, save money, and protect the environment
Adequate sulfur is necessary for crops, but there’s no one-size-fits-all recommendation for application in North Carolina. Best management practices take sulfur removal and incidental sulfur inputs for the entire crop rotation, soil type and profile depth layers and soil and plant analysis results.
This factsheet explains how proper land application of municipal biosolids can protect public health and maintain or improve environmental quality and it encourages the beneficial use of wastes.
This publication provides updated recommendations for phosphorus fertilizer application in corn, soybean, and small grains crops. It includes background and historical information about phosphorus critical levels, phosphorus rate recommendations, phosphorus accumulation in soils, and changes in recommendations.
Nitrogen fertilizer products are being developed and marketed as having the potential to increase yields and nutrient use efficiency, and decrease volatilization (gas). How do these products actually perform on different soils and row crops, under various climatic conditions? This publication summarizes findings from recent studies that investigated alternative nitrogen fertilizer products for row crops in four North Carolina regions.
This publication helps farmers decide whether to reduce fertilization rates in order to achieve maximum profits due to increases in nitrogen fertilizer prices.
