EI-Masri,, M., EI- Shazly, W., Ziadah, K. (2005). RESPONSE OF GIZA 88 COTTON CULTIVAR TO FOLIAR SPRAYING WITH BORON, POTASSIUM OR A BIOREGULATOR SGA-1. Journal of Plant Production, 30(10), 5739-5755. doi: 10.21608/jpp.2005.237493
M. F. EI-Masri,; W. M.O . EI- Shazly; K. A. Ziadah. "RESPONSE OF GIZA 88 COTTON CULTIVAR TO FOLIAR SPRAYING WITH BORON, POTASSIUM OR A BIOREGULATOR SGA-1". Journal of Plant Production, 30, 10, 2005, 5739-5755. doi: 10.21608/jpp.2005.237493
EI-Masri,, M., EI- Shazly, W., Ziadah, K. (2005). 'RESPONSE OF GIZA 88 COTTON CULTIVAR TO FOLIAR SPRAYING WITH BORON, POTASSIUM OR A BIOREGULATOR SGA-1', Journal of Plant Production, 30(10), pp. 5739-5755. doi: 10.21608/jpp.2005.237493
EI-Masri,, M., EI- Shazly, W., Ziadah, K. RESPONSE OF GIZA 88 COTTON CULTIVAR TO FOLIAR SPRAYING WITH BORON, POTASSIUM OR A BIOREGULATOR SGA-1. Journal of Plant Production, 2005; 30(10): 5739-5755. doi: 10.21608/jpp.2005.237493
RESPONSE OF GIZA 88 COTTON CULTIVAR TO FOLIAR SPRAYING WITH BORON, POTASSIUM OR A BIOREGULATOR SGA-1
1Plant Nutrition Dept., National Research Centre, Dokki, Cairo, Egypt.
2Cotton Research Institute, Agricultural Research Centre, Ministry of Agriculture, Giza, Egypt.
Abstract
Two field experiments were carried out at 8assyoun centre , Gharbia Governorate during the two successive seasons 2003 and 2004. These experiments were conducted to evaluate the effect of two foliar sprays of boric acid at two levels i.e. 0.15 and 0.3% at each spray , K2S04 at two levels l.e. 1 and 2% K20 at each spray and a bioregulator SGA-1 at two levels l.e. 0.2 and 0.4% at each spray in comparison with spraying water as a control. The leaf nutrients content, growth traits, boll set attributes, earliness, seed cotton yield and its components of the Egyptian extra long staple ( Gossyp < /em>ium barbadense L.)Giza 88 cotton cultivar were measured. The leaf Nand P contents were significantly increased due to ·the,different spraying treatments where these contents reached their highest averages due to the foliar application of SGA-1 followed by the high level of boron. The same treatments recorded a high K and Ca contents and the highest Fe, Mn and Zn contents. Foliar application of SGA-1 was effective to enhance cotton plant growth as expressed in taller plants and larger number of sympodia and hence larger number of bolls/plant than the control ones. These improvements were reflected in seed cotton yield/fed. Foliar application of boric acid at a level of 0.3% or potassium sulphate at a level of 2% K20 was also effective in these respects but with lower averages than those obtained due to the SGA-1 treatment. The results concluded that two foliar sprays with a bioregulator SGA-1 at a level of 0.4% at the beginning of flowering and 15 days later is the best treatment for good growth and high productivity of the extra long staple , Giza 88 cotton cultivar. Also. two foliar feedings with boron as boric acid at a level of 0.3% or potassium as potassium sulphate at a level of 2% K20 could be used for high productivity
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