EFFECT OF NITROGEN, PHOSPHORUS AND SEEDING RATES ON WHEAT PRODUCTION AND WEED CONTROL IN SIWA OASIS
El-Afandy,, K., Abdel-Ati, A., Mohamed, M. (2007). EFFECT OF NITROGEN, PHOSPHORUS AND SEEDING RATES ON WHEAT PRODUCTION AND WEED CONTROL IN SIWA OASIS. EKB Journal Management System, 32(8), 6099-6111. doi: 10.21608/jpp.2007.220166
K. T. El-Afandy,; A. A. Abdel-Ati; M. A. Mohamed. "EFFECT OF NITROGEN, PHOSPHORUS AND SEEDING RATES ON WHEAT PRODUCTION AND WEED CONTROL IN SIWA OASIS". EKB Journal Management System, 32, 8, 2007, 6099-6111. doi: 10.21608/jpp.2007.220166
El-Afandy,, K., Abdel-Ati, A., Mohamed, M. (2007). 'EFFECT OF NITROGEN, PHOSPHORUS AND SEEDING RATES ON WHEAT PRODUCTION AND WEED CONTROL IN SIWA OASIS', EKB Journal Management System, 32(8), pp. 6099-6111. doi: 10.21608/jpp.2007.220166
El-Afandy,, K., Abdel-Ati, A., Mohamed, M. EFFECT OF NITROGEN, PHOSPHORUS AND SEEDING RATES ON WHEAT PRODUCTION AND WEED CONTROL IN SIWA OASIS. EKB Journal Management System, 2007; 32(8): 6099-6111. doi: 10.21608/jpp.2007.220166

EFFECT OF NITROGEN, PHOSPHORUS AND SEEDING RATES ON WHEAT PRODUCTION AND WEED CONTROL IN SIWA OASIS

Journal of Plant Production
Article 2, Volume 32, Issue 8, August 2007, Page 6099-6111  XML PDF (722.92 K)
Document Type: Original Article
DOI: 10.21608/jpp.2007.220166
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Authors
K. T. El-Afandy,1; A. A. Abdel-Ati1; M. A. Mohamed2
1Plant Production Dept. Desert Res. Center– El-Matarya – Cairo - Egypt
2Plant Protection, Dept. Desert Res. Center – El-Matarya – Cairo - Egypt
Abstract
 
Two field experiments were carried out in Tegzerte Research Station; Desert Research Center, Tegzerte, Siwa Oasis during winter seasons of 2002/2003 and 2004/2004 years to study the effect of nitrogen fertilization levels as (0, 80 and 100 Kg N. fed-1) and phosphorus fertilization levels (0, 15 and 31Kg P205 fed-1) and wheat seeding rates (70, 80 or 90 kg. fed-1) on wheat production and weed control.
Results indicated that increasing phosphorus and nitrogen fertilization levels as well as seeding rates led to increase significantly wheat growth, yield and its components i.e (plant height, spike length, number of spiklets per spike, seed index as 1000 grain weight, number of spikes/m2, grain, straw and biological yields), while fresh and dry weights of associated weeds were reduced as a result of applying the treatments. On the other hand, number of tillers /plant showed significant increase as a result of elevating both nitrogen and phosphorus fertilization, while it demonstrated significant reduction by increasing seeding rates.
Number of tillers per plant was significantly increased as a result of applying the following first order interactions (31 kg P205 fed-1 × 0 kg N.fed-1), (0 kg N.fed-1 ×
90 kg grains .fed-1) and (31 kg P205 fed-1 × 90 kg grains.fed-1). All the first order interactions i.e (phosphorus × nitrogen fertilization levels), (nitrogen fertilization levels × seeding rates) and (phosphorus fertilization levels × seeding rates), increased significantly all the studied characters.
Regarding the second order interaction, higher values of wheat yields and its attributes, as well as higher reduction of fresh and dry weights of associated weeds were obtained from the interaction between (31 kg P.fed-1 × 100 kg N.fed-1 ×90 kg grains.fed-1). While higher number of tillers per plant was obtained from the interaction between (31 kg P205 fed-1 × 100 kg N.fed-1 ×70 kg grains.fed-1).
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