EFFECT OF DIFFERENT BORON APPLICATION ON COTTON YIELD COMPONENTS AND FIBER QUALITY PROPERTIES

1 Siirt University, Faculty of Agriculture, Department of Field Crops, Siirt, Turkey ABSTRACT. This study was carried out to determine the effect of different boron application methods on cotton yield, plant growth and fiber technological properties. The study was conducted at Siirt University Faculty of Agriculture Department of Field Crops experimental area as randomized complete block design with four replications in 2018. Stoneville 468 cotton variety and boron liquid foliar fertilizer were used as material. Seven different boron applications were performed as (Control, 1000 cc ha at pre-flowering stage, 2000 cc ha at preflowering stage, 1000 cc ha at flowering stage, 2000 cc ha at flowering stage and 1000 cc ha at boll formation stage, 2000 cc ha at boll formation stage). The results of statistical analysis showed that there were significant differences between applications methods in terms of plant height and number of monopodial branches. But there were non-significant differences in terms of number of sympodial branches, number of first node of sympodial branch, number of nodes, height/node ratio, number of bolls, boll weight, seed cotton weight of per boll, number of seeds per boll, first picking percentage, 100 seeds weight, ginning percentage, seed cotton yield and fiber technological characteristics. In conclusion different application methods of boron increased plant height and number of monopodial branches of cotton when applied as 1000 and 2000 cc ha at preflowering stages.