The effect of injection application of ammonium fertilizer on the yield of maize
2013
Kubesova, K., Czech Univ. of Life Sciences, Prague (Czech Republic). Dept. of Agro-Environmental Chemistry and Plant Nutrition | Balik, J., Czech Univ. of Life Sciences, Prague (Czech Republic). Faculty of Agrobiology, Food and Natural Resources | Sedlar, O., Czech Univ. of Life Sciences, Prague (Czech Republic). Faculty of Agrobiology, Food and Natural Resources | Peklova, L., Czech Univ. of Life Sciences, Prague (Czech Republic). Faculty of Agrobiology, Food and Natural Resources
The effect of plant nitrogen nutrition by CULTAN (Controlled Uptake Long Term Ammonium Nutrition) method on the yield of maize and the content of nitrogen in various evolution phases was being observed in a field experiment carried out in the years 2010-2011. The experiment took place at three stations with different soilclimatic conditions. CULTAN variants were fertilized with a one-off total dose of nitrogen (by the means of a injection machine, to the depth of 5 cm in the soil) and compared with conventional fertilization, when Calcium Ammonium Nitrate was spread in a blanket manner on the soil's surface. In one injection variant nitrogenous fertilizer containing sulphur (Urea Ammonium Sulphate) was observed. The same dose of nitrogen 140 kg N/ha was applied in all variants. In 2011 the biggest grain yield was achieved at Hnevceves, where all CULTAN variants proved better yield than the conventional variant (15,03 t/ha). Statistically significant bigger grain yield was observed by injection variant Urea Ammonium Nitrate + inhibitors of nitrification variant, in comparison with the conventional variant by 15,5%. In Hnevceves there was a tendency to getting better straw yield by CULTAN variants in 2010.
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