Effects of nitrogen fertilizing on the maize inbred lines yield components | Uticaj đubrenja azotom na komponente prinosa inbred linija kukuruza
2011
Hojka, Z., Fakultet za biofarming, Bačka Topola (Serbia) | Kumbarić, S., KWS Seme YU d.o.o., Beograd (Serbia)
In this study was tested influences of three N fertilizers (urea = 46% N, calcium ammonium nitrate or CAN: ammonium sulphate) and their distribution (N autumn: N-spring: N-5-% autumn + 50% spring; N-33% autumn + 67% spring; N-100% spring based on N-min method test) on yield components of two maize inbred lines (IL1 and IL2) under conditions of Zemun Polje (Serbia) calcaric chernozem for three growing seasons (2001, 2002 and 2003) with aim of N fertilization optimization for seed-maize growing. The use of N-min method test (N ranging from 17 to 35 kg/ha, in dependence on the soil mineral nitrogen content), especially in years with lower precipitation sums, resulted in the highest increase in the ear length and kernels per row of observed maize inbred lines in relation to the control and N-autumn. The highest increase of kernel row number of observed maize inbred lines was achieved by the application of 100kgaN/ha in spring in comparison with the N-autumn. The application of different forms of nitrogen did not result in statistically significant differences in ear length, kernel row number and kernels per row of observed maize inbred lines.
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