Effect of rice straw burning or incorporation, organic manuring and nitrogen level on wheat yield and some nitogen fertilization efficiency attributes
2009
Mohamed, S.S. | Zeidan, E.M. | Abd El -Galil, A.A. | Ibrahim, A.A.
This investigation was carried out in an Extension field at Al-Ibrahimia district, Sharkia Governorate, during 2007/2008 and 2008/2009 seasons to find out the effect of rice straw burning or incorporation before sowing wheat as well as farmyard manure (FYM) addition (20 m3/fad.) and N level (0, 40 and 80 kg N/fad.) on wheat growth and yield. The uptake of nitrogen and its apparent recovery and efficiency of utilization were also investigated, using Sakha 94 wheat cultivar. Burning or incorporation of rice straw was without any significant effect on growth and yield attributes of wheat but however decreased significantly the grain yield/fad. Also, the grain and total wheat yields/fad were decreased significantly as compared with the check where rice residues were plowed down before sowing wheat. Organic manuring was without significant effect on wheat growth and yield except the plant height and the number of spikes/m2. The increase of N level up to 80 kg N/ fad gave significant increase in all growth and yield attributes as well as N uptake, but decreased its apparent recovery. The response equation indicated the possibility of maximising the grain yield due to an average addition of 95.0 kg N/ fad. However, the grain yield could have been optimised due to a predicted addition of 92.0 kg N/fad. where this addition produced 4200 L.E./fad.
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