EI-Aref,, K., Abo EI-Hamed, A., Abo EI-Wafa, A. (2004). RESPONSE OF SOME MAIZE HYBRIDS TO NTROGEN AND POTASSIUM FERTILIZATION LEVELS.. Journal of Plant Production, 29(11), 6063-6070. doi: 10.21608/jpp.2004.238871
Kh. A.O. EI-Aref,; A. S. Abo EI-Hamed; A. M. Abo EI-Wafa. "RESPONSE OF SOME MAIZE HYBRIDS TO NTROGEN AND POTASSIUM FERTILIZATION LEVELS.". Journal of Plant Production, 29, 11, 2004, 6063-6070. doi: 10.21608/jpp.2004.238871
EI-Aref,, K., Abo EI-Hamed, A., Abo EI-Wafa, A. (2004). 'RESPONSE OF SOME MAIZE HYBRIDS TO NTROGEN AND POTASSIUM FERTILIZATION LEVELS.', Journal of Plant Production, 29(11), pp. 6063-6070. doi: 10.21608/jpp.2004.238871
EI-Aref,, K., Abo EI-Hamed, A., Abo EI-Wafa, A. RESPONSE OF SOME MAIZE HYBRIDS TO NTROGEN AND POTASSIUM FERTILIZATION LEVELS.. Journal of Plant Production, 2004; 29(11): 6063-6070. doi: 10.21608/jpp.2004.238871
RESPONSE OF SOME MAIZE HYBRIDS TO NTROGEN AND POTASSIUM FERTILIZATION LEVELS.
1Dept. of Agron., Fac. of Agric., EI·Azhar unlv, Assiut, Egypt.
2Dept. of Agron., Fac. of Agric., South Valley Unlv., Kena, Egypt.
Abstract
Two field experiments were carried out during 2002 and 2003 growing seasons at the Experimental Farm of the Faculty of Agricultural. AI-Azhar University, Assuit Governorate, Egypt, to Study the effect of nitrogen fertilizers (90, 120 and 150 Kg N/fed.) and potassium fertilizer rates (zero, 24 and 48 Kg K20 N/fed.) on yield and yield components of maize hybrids S.C.10 and T.w.C. 310.
The most important results could be summarized as follows:
1-Each increase in nitrogen level up to 150 kg N/fed. and potassium fertilizer up to 48 Kg K20 /fed. resulted in significant increases in ear length, ear diameter, number of rows per ear. 100-grain weight, shelling percentage and grain yield per feddan in both seasons.
2- The interaction between maize hybrids, nitrogen fertilizer levels and potassium fertilizer levels had a significant effect on grain yield per feddan in both seasons.
3- In general, the highest grain yield/fed. (33.21 Ardab/fed) was obtained from S.C. 10 when received nitrogen and potassium at rates of 150 and 48 kg/fed, respectively.
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