The application of ammonium sulphate and amino acid on cotton: effects on can improve growth, yield, quality and nitrogen absorption

Abstract A field study was carried out to determine the influence of foliage applied plant growth promoter and retardant in improving soil sulphur fertilizer use efficiency cotton during two consecutive summers 2014 2015. Experimental trial comprised three different sources (ammonium sulphate, potassium sulphate elemental sulphur) foliar spray including tap water taken as control. Among treatments ammonium with amino acid produced maximum height, sympodial branches, pods per plant, seed yield, fiber biological protein contents, oil contents leaf nitrogen uptake compared other treatments. Whereas, mepiquat chloride on significantly improved boll weight uptake. We conclude that more effective productivity quality attributes cotton.