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Asian Journal of Plant Sciences
Year: 2003  |  Volume: 2  |  Issue: 3  |  Page No.: 347 - 349

Effect of Different Rates of Nitrogen and Phosphorus on Growth and Grain Yield of Maize (Zea mays L.)

M.S. Sharar, M. Ayub, M.A. Nadeem and N. Ahmad    

Abstract: In a field experiment, growth and grain yield of maize cultivar golden as influenced by different NP combinations were studied. The different NP combinations significantly affected the plant height, cob bearing plant m-2, number of grains cob-1, 1000-grains weight, grain yield and harvest index. The number of cobs plant¯1 was not influenced significantly by NP application. The NP application @ 180-130 kg ha-1 produced significantly higher grain yield (4.62 t ha-1) than all other NP combinations. The increase in yield was mainly due to higher 1000-grains weight, number of grains per cob and number of cobs bearing plant per plot. The results indicated that NP fertilizers should be applied @ 180-130 Kg ha-1 to obtain higher grain yield of maize cultivar golden under Faisalabad (Pakistan) conditions.

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