Vol. 10, Issue 12 (2021)

Author(s):
Rajat Kumar Satpathy and Devi Singh

Abstract:
Sweet potato ranked seventh most important food crop of the world after wheat, rice, maize, potato, barely and cassava. China tops the rank in Sweet Potato production in the world. In India, it is cultivated in almost all the states but major contribution comes from four states namely Odisha, Kerala, West Bengal and Uttar Pradesh. Sweet Potato cv. BHU-Krishna is the popular variety of Odisha. It is purple fleshed biofortified cultivar with an average yield of 18 t/ha with high anthocyanin content. This cultivar is not grown in Prayagraj agroclimatic condition. So, to study the “Response of various doses of organic manures and inorganic fertilizers on plant growth and tuber yield of Sweet Potato (Ipomoea batatas) cv. Bhu Krishna”; a field experiment was conducted on the Horticulture research farm of the Department of Horticulture, SHUATS, Prayagraj during year 2021. The experiment comprised of 9 treatments of different combinations of inorganic fertilizers and organic manures replicated thrice in a Randomized Block Design. The main objective of the experiment was to evaluate the to find out the best treatment combination for better growth and yield of Sweet Potato (Ipomoea batatas) cv. Bhu Krishna and to work out the economics of the treatments in the Prayagraj agroclimatic zone. The inorganic fertilizers in the experiment include Urea, SSP & MOP whereas the organic fertilizers Farmyard manure, Vermicompost & Poultry manure in different combinations. From the present investigation it may be concluded that the effect of T9 i.e., 50% RDF+20% FYM+20% poultry manure+10% vermicompost (65.2kg urea+125kg ssp+51.7kg mop/ha+2t fym+1t poultry manure+0.5t vermicompost/ha) was found significantly highest for vegetative and yield parameters viz., vine length i.e., (154.09) cm, number of leaves per plant (170.00), number of vines per plant (10.40), highest internodal length (cm) (4.69), number of tubers per plant (3.35), tuber length (cm) (15.42), highest tuber diameter (cm) (7.24), weight of tuber (g) (96.34), Tuber yield per plant (kg) (0.323) & Tuber yield (155.47 q ha-1). These practices may be passed on to the farmers for obtaining higher returns in this Agro- climatic zone with the B:C ratio of 4.38.