Effect of nitrogen and phosphorus on growth and yield of maize
2006
Nour , A. M. (Agricultural Research Corporation, Wad Medani (Sudan). Gezira Research Station) | Lazim, M. E. (Agricultural Research Corporation, Wad Medani (Sudan). Gezira Research Station) | Fattah, . A. A. (Agricultural Economics Research Program, Shambat, Khartoum North (Sudan))
Field trials were carried out at the Gezira Research Station for three seasons (1998 to 2000) with the objective of studying the performance of the maize hybrid "PAN-6480", a newly released hybrid, to different levels of N and P. Four rates of N (0, 86, 129 and 172 kg N/ha) and three rates of P (0, 43 and 86 kg P2O5/ha) were used. Observations with regard to days to flowering, plant population and grain yield were recorded. Grain yields increased with the addition of N up to 86 kg N/ha, beyond which increases were not significant. The crop showed a poor response to P application and no increase in yield was obtained with the addition of P up to 86 kg P2O5/ha. Hence, it is recommended that only 86 kg N/ha be applied to the crop at sowing to obtain high yields
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