Growth and yield response of spring maize (Zea mays L.) to different sources of nitrogen
Iqbal, S. (University of Agriculture, Faisalabad (Pakistan). Dept. of Agronomy) | Khan, H.Z. (University of Agriculture, Faisalabad (Pakistan). Dept. of Agronomy) | Shaheen, H. (PMAS Arid Agriculture Univ., Rawalpindi (Pakistan). Dept. of Botany) | Ali, A. (University of Agriculture, Faisalabad (Pakistan). Dept. of Agronomy) | Ehsanullah (University of Agriculture, Faisalabad (Pakistan). Dept. of Agronomy) | Raza, S. (University of Agriculture, Faisalabad (Pakistan). Dept. of Agronomy) | Kausar, R. (Ayub Agricultural Research Inst., Faisalabad (Pakistan). Soil Fertility Section)
A field study was conducted to investigate the effectiveness of different nitrogen (N) sources i.e. farm yard manure (FYM), poultry manure (PM) and urea on growth and yield of spring planted maize. The results revealed that maximum increase up to 56, 82.5, 98.3, 77.3, 168, 41.8, 215.2 and 21.8% in plant height, number of grains per cob, 1000-grain weight, biological yield, grain yield, cob diameter, grains rows per cob and protein content were recorded respectively, while decrease in oil content was noted up to 19.2% in the treatments where 50% N from urea + 50% N from PM as compared to control. It is concluded that maize production can be increased by applying N in the form of urea (50%) and PM (50%) in agro-ecological conditions of Faisalabad, Pakistan
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