New results of nutrient utilization and response of maize (Zea mays L.) hybrids

Abstract

In a long-term experiment, the fertilizer response of 10 maize hybrids of different genotypes was studied on chernozem soil in a favourable year. The yields of the hybrids varied between 9500 and 18600 kg ha -1 depending upon the fertilizer treatment and the genotype. The excellent nutrient and water management of the chernozem soil was proved by the high yield (9500 -14600 kg ha -1 ) obtained in the control. Even in such a good soil, the maize hybrids demanded fertilization and responded to it with a high yield increasement (3200 -6500 kg ha -1 ). From among the tested hybrids, 8 hybrids gave the highest yield in the N 120 +PK treatment, while 2 hybrids reached their maximum yield in the N 150 +PK fertilizer treatment (13500 -18600 kg ha -1 depending upon the hybrid). The water utilization of maize was improved as a result of the optimum fertilization. The water-use efficiency (WUE) was 30.35 kg mm -1 , while it increased to 42.22 kg mm -1 at the optimum fertilizer dosage (N 120 +PK). The natural nutrient utilization ability (yield in the control treatment) and the yield obtained at the optimum fertilizer dosage (N 120 +PK and N 150 +PK) were used in a special coordinate system.

The impact of environmental factors on the protein content and yield of maize grain at different nutrient supply levels

“…The 1.131 t ha -1 yield surplus of the 30:23:27 kg NPK ha -1 treatment in comparison with the untreated control plot is not significant (Fig. 3), as opposed to the findings of Pepó and Karancsi (2014), i.e., the highest difference compared to the control treatment was provided by the 30:23:27 kg NPK ha -1 treatment. However, the 60:46:54 kg NPK ha -1 treatment resulted in a yield increase of 3.151 t ha -1 (P<0.05).…”