Determination of the effect of magnesium applications on yield, fiber quality and chlorophyll content in cotton

Abstract

Objective: The objective of this investigation was to determine the effects of different applications of magnesium (Mg) on yield, yield attributes, fiber quality traits, chlorophyll content, and normalized difference vegetative index in cotton. Material and Methods: In this study 7 different Mg applications were applied, and MAY 455 cotton cultivar and Magnesium Sulphate were used. Results: It was determined that seed cotton yield, number of nodes of first fruiting branches, number of vegetative branches, number of bolls, height/node ratio, boll weight, fiber strength, uniformity, elongation, and spinning consistency index were affected by magnesium applications. The highest value in terms of the number of bolls, number of vegetative branches and height/node ratio was observed with 200 cc/da Mg application at the squaring stage, while the highest seed cotton yield was recorded with 200 cc/da Mg at flowering stage and Mg application lead to increase 60 kg/da in seed cotton yield. The highest spinning consistency index and uniformity was obtained with 600 cc/da Mg application at the squaring stage, other quality traits were affected by different doses or application stages. Conclusion: Applying green parts during the squaring or flowering period may be advantageous since magnesium has a positive impact on the yield and certain fiber quality of cotton.