The effect of plant density and nitrogen levels on the yield and yield components of maizecultivar (KSC 700) in moderate region of Kermanshah.
Subject Areas : crop production
1 - استادیار اصلاح نباتات، بخش تحقیقات زراعی و باغی، مرکز تحقیقات و آموزش گشاورزی و منابع طبیعی کرمانشاه، سازمان تحقیقات، آموزش و ترویج کشاورزی، کرمانشاه.، ایران.
Keywords: Corn, plant density, nitrogen fertilizer, grain yield and yield components.,
Abstract :
In order to evaluate the effect of planting density and nitrogen fertilizer rates on yield and yield components of maize cultivar (KSC 700), an experiment was conducted with four plots (69, 77, 85 and 93 thousand plant ha-1 ) and three sub-plot (150, 250 and 350 nitrogen kg ha-1). The research was carried out in split plot experiment based on RCBD with 3 replications in research station of Islam Abad. The measured traits were included plant height and ear, seed number per row, row number per ear, 100 seed weight, seed weight per plant, ear weight and grain yield. Analysis of variance indicated that the effect of plat density was significant on 100 seed weight and ear weight at probability level of 1% and for plant height, the number of seeds per row, row number and grain yield per plant at 5% probability level. The effect of nitrogen fertilizer was meaningful on weight traits at 1% probability level for 100 seed weight, number of seeds per row, grain yield per plant at 5% probability level. The grain yield of four plant density had 9441, 12050, 10740 and 8098 kg ha-1 , and nitrogen fertilizer had 9362, 10140 kg ha-1, respectively. The treatment of 77000 pha-1 X 350 kgha-1 of nitrogen was significant at five percent level for more characters such as number of kernels per row, number of rows, seed weight and seed grain yield with 43.3, 18.5, 32.2 gr and 12870 kgha-1, respectively. Also grain yield of 77000 pha-1 X 250 kgha-1 on nitrogen treatment was better than the other treatments with 12260 kgha-1 .
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