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National Repository of Grey Literature 1 records found  Search took 0.01 seconds. 
Vliv rozmístění živin v půdním profilu na konkurenci mezi plevely a plodinou
 Panoc, Jan
Nitrogen is one of the most important part of nutrition of winter wheat. However, if in the crop are weeds capable of using nitrogen more efficiently, the area-wide fertilization can make competitive ability higher for weed, after that there is a reduction in the yield of wheat. Example of weed with this ability is cleavers (Galium aparine). Possibility how we can eleiminate this weed ability is using precision placement of fertilizer under the crop row. The aim of this thesis is finding out of positive effects of precision placement of nitrogen fertilizer (calcium nitrate) in comparison with area-wide fertilization for reduction competitive ability of cleavers against wheat. The experiment was containerized and was run in a growth room with controlled conditions. Based of the experiment, it was found, that competition of cleavers was decreased by precision placement of fertilizer but growth of wheat was decreased too because of higher nitrate availability in the soil. This method of fertilization does not produce the expected effect for better wheat competitive ability.
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