Evaluation of Nitrogen Yield-Forming Efficiency in the Cultivation of Maize (Zea mays L.) under Different Nutrient Management Systems

Failure to adjust the fertilization system quantitative needs, and especially dynamics of mineral demand, causes plant metabolism disorders, low utilization by plant, an increased risk environmental pollution. Additionally, unbalanced may reduce assimilation surface actively involved in photosynthesis, which determines yield potential individual varieties. The aim strict field experiment was determine responses two types maize varieties (Zea mays L.) treatments with different nutrient management systems, as expressed growth analysis active organs during SPAD (soil development) leaf greenness index, green mass yield, unit nitrogen productivity from PFPFN (partial factor fertilizer nitrogen). It demonstrated that total area blades a single LAI (leaf index) value were significantly higher “stay-green” hybrid compared traditional variety. morphological structure hybrid, based on SLA (specific area), indicated highly effective nitrogen, leading faster production larger area, formed basis for absorption solar radiation. selection silage cultivation guarantees high yields. lower biomass intended ensilage can only be reduced applying balanced all nutrients. omission phosphorus (P) potassium (K) dose, regardless variety tested, reducing partial treatment optimally respect dose.