Effect of fertilizer levels and plant densities on yield and protein contents of autumn planted maize

Rafiq, M.A. . Dept. of Agronomy; Ali, A. . Dept. of Agronomy; Malik, M.A. . Dept. of Agronomy; Hussain, M. . Dept. of Botany

Effect of fertilizer levels and plant densities on yield and protein contents of autumn planted maize

2010

Rafiq, M.A. (University of Agriculture, Faisalabad (Pakistan). Dept. of Agronomy) | Ali, A. (University of Agriculture, Faisalabad (Pakistan). Dept. of Agronomy) | Malik, M.A. (University of Agriculture, Faisalabad (Pakistan). Dept. of Agronomy) | Hussain, M. (University of Agriculture, Faisalabad (Pakistan). Dept. of Botany)

A field experiment was conducted during 2006 and 2007 to determine the effects of different fertilizer levels and plant densities on yield of autumn planted maize. Maize hybrid Pioneer 30-Y-87 was selected as test. The treatments comprised of six fertilizer levels (150-0, 150-15, 200-0, 200-15, 250-0 and 250-15 kg N-Zn per ha) and three plant densities (57100, 71400 and 99900 plants per ha). The highest plant height and grain yield was recorded from those maize plots which were fertilized at 250 kg N per ha and 15 kg Zn per ha and the crop was sown at plant density of 99900 plants per ha against the significantly minimum plant height and grain yield where fertilizer was applied at 150 kg N per ha and 0 kg Zn per ha and crop was sown at plant density of 57100 plants per ha. Increasing fertilizer levels and plant densities linearly increased plant height and grain yield. Application of Zinc accelerated tussling and silking of maize crop, however the application of nitrogen had

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