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Ověření senzorového systému OptRx pro variabilní aplikaci dusíkatých hnojiv
 Čujek, Jan
The diploma thesis deals with the technology of precious agriculture. One of the technology used in the type of agriculture mentioned above is N – detectors, which are based on spectral measuring of vegetation. The theoretical part is focused on the principles and methods of vegetation scanning by the detectors, the importance of the nitrogen nutrition of field crops and the summary of available N – detectors. The practical part consists of the working experiment with winter wheat when the N detectors OptRx by Ag leader were tested during the years 2016 and 2017. The differences between the variable and surface application of nitrogen fertilizers on the same area were observed from the point of view of the yield, the quality of winter wheat and also the fertilizers costs. In the result part, the results of particular testing years are compared. The economic effect in 2016 was better after using variable application amount to 3314 czk.ha-1. In 2017 it was just the opposite. The result was -2588 czk.ha-1 compared to the surface application. There were found out big differences among the particular years and the areas. In conclusion, it is not clear how big effect the variable application of nitrogen fertilizers has. The conditions of the location, the weather, the year of testing, the variety and the agronomical arrangements play the crucial role.
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