The effect of irrigation regime and manure on water use efficiency and yield of potato in Jiroft

Considering the limited resources of water and dominant draughts, deficit irrigation is an important strategy to obtain the product in water shortage conditions. Deficit irrigation aims to produce more products from less water. Therefore, an experiment was conducted in order to evaluate the impact of deficit water and poultries manure on the performance, performance components, and water use efficiency of potato in Jiroft. The experiment was conducted in strip-plot form in the complete random blocks design with three replications. Three water levels as a main factor including 100, 75 and 50 percent of plant water requirement and four manure levels as secondary factor including 0, 5, 10 and 15 Ton ha-1 were considered. The results indicated that different levels of irrigation and poultries manure on both water use efficiency and potato yield were (1%). Also, the impact of different levels of irrigation and the poultries manure on the weight of potato tuber is significant.Moreover, the interaction of the irrigation regime and poultries manure on water use efficiency and potato yield was not significant. Furthermore, the effect of different levels of irrigation and poultries manure alone on the plant height was not significant, but their interaction was significant. Though the effect of different irrigation levels on the percentage of dried material of tuber was not significant, the impact of different levels of poultries manure, and the interaction of irrigation regime and poultry manure on tuber dry matter was significant.