MAIZE AND ITS RELATION TO pLANT POPULATION AND NITROGEN FERTILIZER LEVELS | ||
| Journal of Plant Production | ||
| Article 5, Volume 28, Issue 7, July 2003, Pages 5173-5181 PDF (1.27 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jpp.2003.252494 | ||
| Authors | ||
| A. A. Zohry; B. S. Farghaly | ||
| Field Crops Research Institute, Agric. Res. Center, EI-Gamma st., Giza, Egypt. | ||
| Abstract | ||
| Four field experiments were carried out at Mallawi (Middle Egypt) and i Shandawill (Upper Egypt). Research Stations. Agricultural Research Center during " 2001 and 2002 seasons. To study are the effect of plant population and nitrogen fertilizer levels and their interaction on yield and yield components of maize. Split plot design was used with four replications. The main plots were randomly assigned to the four plant population I.e. 15. 20. 24 and 30 thousand plants/fed obtained from planting at 40. 30. 25 and 20 cm with one planUhill. The subplots devoted to nitrogen fertilizer rates of 30. 60. 90, 120 and 150 Kg Nffed. the most important results could be summarized as follows: 1- The increases in maize plant density from 15.000 to 30.000 plants/fed significantly increased means of plant height, ear height and the period from planting to 50 % tasseling or silking but the yield components were decreased by increasing densities. Grain yield 0 f maize was significantly affected by plant density. Plant population 30,000 plants/fed had the highest grain yield followed by 24,000 plants/fed. 2- Raising nitrogen levels from 30 to 150 Kg N/fed increased growth, yield and yield components characters and reduced the period from sowing to 50 % tasseling or silking, 3- No significant differences between grain yield/fed of 120 and 150 Kg Nlfed and between 24 and 30 thousand planUfed. it can be recommend that to produce higher and economical grain yield/fed must fertilizer with 120 Kg N/fed and plant density is 24000 planUfed. 4- The treatment of plant density of 24,000 planUfed with 120 Kg N/fed gave the highest yield, there for it could be recommended to maximize maize productivity under the environmental conditions of the present study. | ||
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