Utilization Of Potensial Ground Water For Drip Irrigation

Abstract

Drip irrigation is a method of applying water directly to the plants, either to the ground or into the soil through a continuous and slow drip near the plant. Application of drip irrigation is very suitable to be applied on dry land to improve the efficient use of irrigation water. This study aims to design a drip irrigation design plan, and to determine the feasibility of its application. The secondary data used in this research was obtained from the government institution, whereas the primary data was obtained by direct field observation. Results showed that the dimensions of the main pipe, main sub pipe, pipe to the manifold pipe, and lateral pipe shall be 4 inches, 2 inches, 1.5 inches, and 0.063 inches respectively and an emitter spacing of 30 cm. Performance test showed that the average uniformity value of the drip irrigation is 96,23%. The operation of irrigation system in HST 1-31, HST 32-62, HST 63-9 ,and HST 93-120 shall be 48 minutes/ day, 60 minutes/ day, 108 minutes/ day, and 96 minutes / day respectively. Considering the critical point for watering the plant, the watering should be done when the ground water level has reached 32.1% v. The economic and feasibility analysis of irrigation water show that the economic value of irrigation water is Rp. 0.555, -/liter, IRR is 22.325%, payback period is within 10 MT, and the BEP value is 40.142 kg.