Productivity and profitability of potato (Solanum tuberosum) genotypes as affected by varying levels of organic and inorganic sources of nutrients in northern hills of Chhattisgarh

Abstract

Field experiments were conducted during kharif of 2016 and 2017 at Mainpat, Chhattisgarh to investigate the effect of varying levels of organic and inorganic sources of nutrients on productivity and profitability of potato (Solanum tuberosum) genotypes. The treatments consisted three genotypes viz. Kufri Khyati, Kufri Pukhraj and Kufri Sinduri in main-plots and three nutrients sources viz. 100% RDF, 100% RDF + 5 t FYM ha-1 and 150% RDF in sub-plots. Potato genotypes had significantly variations in growth and yield attributes, total yield, nutrient uptake. Significantly higher growth attributes i.e plant height, number of shoot plant-1, dry weight of shoots and roots plant-1 and leaf area index (LAI) at 40 DAP and 60 DAP were recorded under Kufri Pukhraj. Hence, Kufri Pukhraj gave significantly higher fresh weight of tuber plant-1 (317.79, 320.79 g), total tuber yield (19.62, 19.87 t ha-1), NPK uptake, net return ( 187482, 207300 ha-1) and B: C ratio (3.15, 3.28), except number of tubers plant-1 (15.40, 15.81) were recorded in Kufri Sinduri. Among the varying nutrient sources 150% RDF of NPK showed better performance in all growth parameters, yield attributes and registered 17.19 to 17.80% more total yield of tuber when compared with others nutrient levels. The highest net return ( 168243, 186329 ha-1) and B: C ratio (2.89, 3.01) was also recorded in 150% RDF treatments. The higher total tuber yield (21.73 t ha-1) were obtained from ‘Kufri Pukhraj’ genotype of potato treated with 150% RDF.