Vol. 13 No. 3
Assessment of potassium on balanced fertilization of soybean-wheat cropping system in Bundelkhand of Uttar Pradesh
Author(s): A. K. Singh
Abstract: The experiments on research farm field were conducted at KVK during 2013-14 to 2015-16 to assess the impact of balanced fertilization particularly of potassium nutrition on productivity of soybean as well as soybean-wheat cropping system. Potassium application had significant positive effect on growth and nodulation in soybean. It favourably influenced the quality parameters of soybean as well. There was significant reduction in insect-pests infestation and disease incidence in soybean receiving potassium dressings. Application of 20 kg basal + 20 kg K2O ha-1 at flowering (R2 stage) gave maximum productivity of soybean-wheat cropping system while application of 20 kg K2O ha-1 as basal was most economical in terms of IBCR indicating the utility of K applications for resource poor farmers. The negative balance of K in all the treatments, except with the application of 40kg K2O ha-1 as basal to both the crops of the system, brought out the need for reorienting the present recommended levels of K to meet the system need and enhance system efficiency in sustainable way.
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