EFFECT OF POTASSIUM AND BORON ON DROUGHT TOLERANCE OF COTTON PLANTS 1- Vegetative growth and anatomical studies Arab Conference of Soil And Water Management For Sustainable Agricultural Development 10-11 April 2007 (Conferences Hall, Faculty of Agriculture Mansoura University).141-153(2007).
|Authors:||Abd El- Dayem, H. M. and Faten, H. M. Ismaeil|
|Paper Link:||Not Available|
|Full paper||Not Available|
|Supplementary materials||Not Available|
Two pot experiments were carried out during 2005 and 2006 seasons at the Agricultural Botany Department, Faculty of Agriculture at Moshtohor, Benha University to study the effect of foliar spraying by potassium (125, 250 and 500 ppm.) and boron(5,25 and 50 ppm.)on cotton plants (Giza 67 cultivar)grown under soil moisture levels (20,40 and 60 %) of available soil moisture. Plants were sprayed with potassium and boron three times: after complete germination, vegetative growth stage and before the flowering stage. Vegetative growth and Anatomical studies were done. The results obtained can be summarized as follows:- The treatments with B at 25ppm and K at 500ppm with 60% of available soil moisture gave the highest values of vegetative growth compared with the control especially root length. As for the anatomical, several alternations were existed with different applied treatments. All treatments gave the highest parameters in transfer sections of tap root, main stem and leaf blade. The best treatments were B at 25ppm and K at 500ppm with 60% of available soil moisture. As for stomatal number and dimensions (length and width) in the lower epidermis of leaf blade were affected by different applied treatments