Evaluation of Complete Fertilizer in the Aspect of the Antioxidant Enzyme System of Maize Hybrids

Studies on physiological and biochemical processes in crops are highly relevant for breeders to produce hybrids with high yield. Two different maturity groups of maize were tested this study. The research site was located at the Látókép Experimental Station University Debrecen experiment lasted 2 years. examined nitrogen ranges separated into two parts. Firstly, effects fertilizer ranging from 120–300 kg ha−1 examined, supplemented a constant, high-level P2O5 K2O. Secondly, optimal ratio N:P:K measured. In order monitor health status hybrids, stress indicators including activity ascorbate peroxidase (APX), superoxide dismutase (SOD), rate lipid peroxidation (LP), grain yield samples taken five phenological stages. Variance analysis based showed variation sampling times fertilizers APX, LP, SOD. NPK indicated times, years, levels Correlation that correlated negatively SOD during use fertilizer, as cannot make corrections but phosphorus potassium can correlate yield, Principal component NPK5 N5 had maximum stability effect APX highest value silking, LP V14 leaf stage. correlation principal silking stage most important stages thus, higher attention must be paid these activation achieve