Application of Cow Manure at different Height of Mound to Increase Sweet Potato potatoes Productivity

Abstract

Lack of soil fertility and improper cultivation systems will reduce the productivity of sweet potatoes (Ipomoea batatas L.) significantly. Effort to increase the productivity of sweet potato can be achieved by administering of cow dung and managing the height of mounds to support the crops growth and development. The experiment was arranged as factorialized block design, consisted of 2 factors, namely cow dung with (5, 10 and and 15 tons ha-1) and. mound height (20, 30 and 40 cm). The observed parameters were the length of the main stem, number of leaves, number of tendrils, and diameter of sweet potato, weight of sweet potato planted, weight of sweet potato per plot, economical and uneconomical yield of sweet potato.Different dosage of organic manure or mound height resulted the same yield components and the yield of commercially of sweet potatoes. The highest of tuber weight per plant was obtained by the application of 15 ton ha−1 organic. This finding conclude that the application 15 ton ha-1 of organic manure and 20 cm of mound height could be adopted for sweet potatoes cultivation.