Mansour, A., Bassiouny, A., Abd El-Maksoud, M. (2009). EFFECT OF DIFFERENT RATES OF NPK FERTILIZATION ON WHEAT (Triticum aestivum, L) UNDER NEWLY CULTIVATED SANDY SOIL CONDITIONS. Journal of Plant Production, 34(3), 1797-1817. doi: 10.21608/jpp.2009.116939
A. A. Mansour; A. H. Bassiouny; M. F. Abd El-Maksoud. "EFFECT OF DIFFERENT RATES OF NPK FERTILIZATION ON WHEAT (Triticum aestivum, L) UNDER NEWLY CULTIVATED SANDY SOIL CONDITIONS". Journal of Plant Production, 34, 3, 2009, 1797-1817. doi: 10.21608/jpp.2009.116939
Mansour, A., Bassiouny, A., Abd El-Maksoud, M. (2009). 'EFFECT OF DIFFERENT RATES OF NPK FERTILIZATION ON WHEAT (Triticum aestivum, L) UNDER NEWLY CULTIVATED SANDY SOIL CONDITIONS', Journal of Plant Production, 34(3), pp. 1797-1817. doi: 10.21608/jpp.2009.116939
Mansour, A., Bassiouny, A., Abd El-Maksoud, M. EFFECT OF DIFFERENT RATES OF NPK FERTILIZATION ON WHEAT (Triticum aestivum, L) UNDER NEWLY CULTIVATED SANDY SOIL CONDITIONS. Journal of Plant Production, 2009; 34(3): 1797-1817. doi: 10.21608/jpp.2009.116939
EFFECT OF DIFFERENT RATES OF NPK FERTILIZATION ON WHEAT (Triticum aestivum, L) UNDER NEWLY CULTIVATED SANDY SOIL CONDITIONS
Plant Production Dept. (Agronomy) Inst. of Efficient Productivity, Zagazig Univ., Egypt.
Abstract
Two field experiments were carried out during 2005/2006 and 2006/2007 seasons in three locations i.e., El-Khattara and El-Salhya, Sharkia Governorate and El-Areish, North Sinai Governorate, Egypt to study the effect of four PK-fertilizer levels (15.5 kg P2O5 + 24 kg K2O, 15.5 kg P2O5 + 48 kg K2O, 31.0 kg P2O5 + 24 kg K2O and 31.0 kg P2O5 + 48 kg K2O/fad.) and six N-fertilizer levels (40, 60, 80, 100, 120 and 140 kg N/fad.) on yield, yield components and yield analysis of wheat. The obtained results could be summarized as follows :
Increasing PK-fertilizer levels up to 31.0 kg P2O5 + 48 kg K2O/fad. at El-Khattara and up to 31.0 kg P2O5 + 24 kg K2O/fed. at both El-Salhya and El-Areish caused a significant increase in number of spikes/m2. Number of grains/spike, 1000-grain weight and straw, grains and biological yields/fad. were significantly increased by adding 31.0 kg P2O5 + 48 kg K2O/fad. at the three locations. However, the effect of PK-fertilizers on grain weight/spike at the three locations was not significant, except at El-Khattara and El-Salhya locations in the 1st season which was significant.
Increasing N-levels up to 140 kg N/fad. resulted in a significant increase in number of spikes/m2 at the three locations, while increasing N-levels up to 120 kg N/fad. was accompanied by a significant increase in number of grains/spike at the three locations, 1000-grain weight at El-Salhya and El-Areish and biological yield/fad. at El-Ariesh. However, grain weight/spike at the three locations, 1000-grain weight at El-khattara, straw and grain yields/fad. at the three locations and biological yield/fad. at El-Khattara and El-Salhya were significantly increased when 100 kg N/fad. was applied.
The significant interaction effect between the studied factors indicated that wheat plants grown at El-Salhya and fertilized with 31.0 kg P2O5 + 48 kg K2O and 140 kg N/fad. gave the highest values of number of spikes/m2. Also, the highest values of 1000-grain weight, grain yield and biological yield were attained when wheat plants were fertilized with 31.0 kg P2O5 + 48 kg K2O and 100 kg N/fad. and this was true at El-Ariesh location. Plants grown at El-Khattara and fertilized with 31.0 kg P2O5 + 24 or 48 kg K2O gave the highest straw yield/fad. when 140 kg N/fad. was applied. However, wheat plants grown at El-Khattara location surpassed those grown at El-Salhya and El-Ariesh locations in most of studied characters.
Positive and highly significant correlation coefficients were detected between grain yield/fad. and all studied characters.
The path analysis revealed that the direct effect of number of spikes/m2 was 63.98% being higher than that of number of grains/spike and 1000-grain weight which were 11.85 and 4.71% of grain yield variation, respectively.
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