Principles of decision support system for precision fertilization
2001
Jadczyszyn, T. (Institute of Soil Science and Plant Cultivation, Pulawy (Poland). Dep. of Plant Nutrition and Fertlization)
The paper deals with two concepts of yield map utilization to determine fertilizer rates: 1. Under the conditions of high phosphorus and potassium content in the soil, fertilizers should cover the amount of nutrients that has been uptaken by the forecrop. In that case formation of maps of variable fertilizer rates is based on values read from the yield map that are multipled by nutrient removal per yield unit. 2. Under the conditions of variable nutrient content in the soil, fertilizer doses should be determined due to fertilizer recommendation system NAW
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