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Zpracování podkladů pro variabilní aplikaci hnojiv v precizním zemědělství pomocí geografických informačních systémů
 Paulová, Nikol
This thesis is focused on P, K and Mg fertilizing in precision agriculture all shown on a model of winter wheat with expected yield of 7,7 t.ha-1. Although it is a model, it is based on the specific results of laboratory analysis of the collected samples from the lands around Otnice village. Six options of fertilizing were compared. Four of them concerned variable application; in accordance with the principles of precision farming, spatial differences in the content of nutrients P, K, Mg were taken into account. Two variants of variable-rate fertilization were calculated using the yield potential made from satellite imagery. Variable rates were defined with geographic information system environment. The other two options were computed with the traditional approach, when the land is treated as uniform unit and only one amount of the fertilizer is applied to it. There were two methods used for correction the fertilizer amount. One traditional and other could have divided the parcels into sixteen classes instead of five as traditional method. The variable variation which took into account the spatial differences in nutrient content and also the yield potential was evaluated as the most optimal option.
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