Kafaga, E., Saleh, S., Abd El-Shafy, Y., Antoun, L. (2008). EFFECT OF POTASSIUM FERTILIZATION ON COTTON PRODUCTION UNDER EGYPTIAN SOIL CONDITIONS. Journal of Soil Sciences and Agricultural Engineering, 33(1), 785-792. doi: 10.21608/jssae.2008.166825
E.E.E. Kafaga; Sh. Z. Saleh; Yosreia S. Abd El-Shafy; L.W. Antoun. "EFFECT OF POTASSIUM FERTILIZATION ON COTTON PRODUCTION UNDER EGYPTIAN SOIL CONDITIONS". Journal of Soil Sciences and Agricultural Engineering, 33, 1, 2008, 785-792. doi: 10.21608/jssae.2008.166825
Kafaga, E., Saleh, S., Abd El-Shafy, Y., Antoun, L. (2008). 'EFFECT OF POTASSIUM FERTILIZATION ON COTTON PRODUCTION UNDER EGYPTIAN SOIL CONDITIONS', Journal of Soil Sciences and Agricultural Engineering, 33(1), pp. 785-792. doi: 10.21608/jssae.2008.166825
Kafaga, E., Saleh, S., Abd El-Shafy, Y., Antoun, L. EFFECT OF POTASSIUM FERTILIZATION ON COTTON PRODUCTION UNDER EGYPTIAN SOIL CONDITIONS. Journal of Soil Sciences and Agricultural Engineering, 2008; 33(1): 785-792. doi: 10.21608/jssae.2008.166825
EFFECT OF POTASSIUM FERTILIZATION ON COTTON PRODUCTION UNDER EGYPTIAN SOIL CONDITIONS
1Soil, Water and Environ. Res. Inst., Agric. Res. Center.
2Field crops Res. Ins., Agric. Res. Center.
Abstract
Four field experiments were carried out at El-Serw Agricultural Research Station of Damietta Governorate and Kafer El-Hamam Agricultural Research Station. Sharkia Governorate during 2004 and 2005 seasons to study the effect of two levels of potassium fertilizer (12.5 and 25kg K2O fed.-1) added as a soil application companied with one or two foliar spray of 2% soluble potassium sulphate (50% K2O) (solupotasse) on cotton yield, yield component and quality of seeds.
The results revealed that potassium treatments increased number of open bolls / plant, boll weight /gm, seed cotton yield (ton fed.-1), lint percentage and a slight increase in oil percentage, but it had insignificant effect on seed index and protein percentage comparing to control treatment.
The addition of 12.5 kg k2O fed.-1 after thinning as soil application + two foliar sprays, with 2% soluble potassium sulphate (solopotasse) at budding stage (45 days after sowing) and before flowering is considered to be a recommended amounts for cotton (3.29 ton fed.-1) at El-Serw area, while addition of 25kg k2O fed.-1as a soil application + two sprays of 2% soluble potassium sulphate solopotasse at the above mentioned time was the recommended amounts in Kafer El-Hamam site. which yielded (3.34 ton fed.-1).
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