Effect of nitrogen fertilization and seedling density on fine rice yield in Faisalabad, Pakistan
2012
Ehsanullah (University of Agriculture, Faisalabad (Pakistan). Dept. of Agronomy) | Jabran, K. (University of Agriculture, Faisalabad (Pakistan). Dept. of Agronomy) | Asghar, G. (University of Agriculture, Faisalabad (Pakistan). Dept. of Agronomy) | Hussain, M. (Bahauddin Zakariya Univ., Multan (Pakistan). Coll. of Agriculture) | Rafiq, M. (Ayub Agricultural Research Inst., Faisalabad (Pakistan))
Rice seedlings density per hill and optimal nitrogen fertilization exercises a strong influence on rice growth and grain yield due to competitive effects both on the vegetative and reproductive development. Present study was conducted to explore the possible role of nitrogen fertilizer and seedlings density on rice kernel yield and yield contributing factors. Three nitrogen (N) rates viz. 75, 100 and 125 kg per ha and four seedling densities (1, 2, 3 and 4 seedlings per hill) were tested in the study. Panicle length, number of branches per panicle and kernels per panicle remained unaffected at varying levels of N and rice seedlings per hill. Two, 3 and 4 seedlings per hill along with 100 and 125 kg N per ha resulted in maximum rice kernel yield and harvest index due to enhanced number of panicle bearing tillers and 1000-kernel weight. While application of N at 75 kg per ha along with one seedling per hill revealed the poorest results with respect to 1000-kernel weight, panicle bearing tillers per hill and the kernel yield of rice. In crux, two seedlings per hill at 100 kg N per ha proved to be the best combination for maximizing the rice yield in the Faisalabad area of Pakistan.
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