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Effect of various levels of NP fertilizers on Maize (Zea mays L.) under different moisture conditions

By: Babar Hussain, Khadim Dawar, Ikramullah Khan, Aqleem Abbas

Key Words: Maize, NP and irrigation, Yield component, Total P and N.

Int. J. Agr. Agri. Res. 8(4), 54-66, April 2016.


The present study was conducted in the University of Agriculture, Peshawar, Pakistan research farm to investigate the effectiveness of various levels of nitrogen (N), phosphorus (P) fertilizers and irrigation (I) on growth and yield components of maize crop (Zea mays L.) as well as total P and N. The experiment was laid out in Split block design replicated three times. The experiment comprised of two main plots where two levels of irrigations were applied i.e. irrigation at the same day of sowing field capacity (FC) 50-60 % (I1) and irrigations after five days of sowing (FC) 20- 30 % (I2). While in the subplots Nitrogen (N) using urea and Phosphorus (P2O5) using single super phosphate were applied in the following combination i.e. 0:0, 50:0, 50:60, 50:90, 100:0, 100:60, 100:90, 150:0, 150:60, 150:90. The results showed that the treatments combinations N3P3, I1N3 and I1P3 yielded maximum plant height, weight of grains ear-1, and grain yield. The total P and N concentration in plant leaves were also highest at the interactions N3P3, I1N3, and I1P3. It is concluded that application of irrigation on same day after NP fertilizers 150 and 90 kg ha-1 is much better than other treatments. These results suggest that irrigation move added urea and SSP from the surface layer to sub soil layers where it is likely to make good contact with plant roots.


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