RESPONSE OF SOME MAIZE HYBRIDS TO NTROGEN AND POTASSIUM FERTILIZATION LEVELS. | ||||
| Journal of Plant Production | ||||
| Article 3, Volume 29, Issue 11, November 2004, Page 6063-6070 PDF (2.14 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jpp.2004.238871 | ||||
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| Authors | ||||
| Kh. A.O. EI-Aref,1; A. S. Abo EI-Hamed2; A. M. Abo EI-Wafa2 | ||||
| 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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