Effect of potassium fertilization on the efficiency of nitrogen use in winter wheat (Triticum aestivum)
2011
Kiss, Z.G., Szent István University, Gödöllő (Hungary). Institute of Environmental Sciences, Department of Soil Science and Agricultural Chemistry | Gulyás, M., Szent István University, Gödöllő (Hungary). Institute of Environmental Sciences, Department of Soil Science and Agricultural Chemistry | Benedek, Sz., Szent István University, Gödöllő (Hungary). Institute of Environmental Sciences, Department of Soil Science and Agricultural Chemistry | Füleky, Gy. (mentor), Szent István University, Gödöllő (Hungary). Institute of Environmental Sciences, Department of Soil Science and Agricultural Chemistry
With the purpose to analyze the effects of potassium fertilization on nitrogen use efficiency in winter wheat (Triticum aestivum), field experiment was established in randomized design with four replicates at the Research Station of the Szent István University in Gödöllő, Hungary on sandy loam soil in autumn 2010. Beside P and Mg fertilization based on the soil analysis, two levels of N fertilization were introduced, where 75% and 100% of the required amount based on the Nmin analysis were applied. In the year before winter wheat maize and potato with same nitrogen treatments were cultivated on the plots. On both nitrogen levels four treatments of K fertilization were distinguished: K0, K50, K100 and K150, where the 100% treatment is equal to plant release corrected by soil analysis. Therefore by winter wheat half of the plots were fertilized with potassium (equivalent to plant request) and the other half of each plot was without potassium fertilization. During the vegetative phase of plant growth, plant analysis was carried out for N, P and K content. Results show significant differences between potassium treated and not treated plots, since potassium application increased N, P and K concentration in plants (BBCH 35) of winter wheat. Similar results can be detected in the amount of yield. It can be conclude, that nitrogen use efficiency – resulting in higher nutrient concentration in plants (BBCH 35) and yield production – was increased by potassium fertilization. Therefore present and similar experiments seem to be necessary to develop environmental and economic sustainable nutrient management practices for increased yield and product quality in plant production.
Показать больше [+] Меньше [-]Ключевые слова АГРОВОК
Библиографическая информация
Эту запись предоставил Matica Srpska Library