Emitter Performance Test of Sago Midmidrib for Drip Irrigation
Suhardi (a*), Ahmad Munir (a), Abdul Azis (a), Abdul Waris (a), Harvhianti Haruki (b)

a) Department of Agricultural Engineering, Faculty of Agriculture, Hasanuddin University, Makassar, 90245. Indonesia.
*suhardi[at]unhas.ac.id
b) Undergraduate student, Department of Agricultural Engineering, Faculty of Agriculture, Hasanuddin University, Makassar, 90245. Indonesia

Abstract

The limited availability of water becomes a problem in meeting the water needs of plants. The selection of water supply techniques effectively and efficiently becomes an important thing. One technique of providing water that is efficient and effective is drip irrigation. In its application, drip irrigation requires an emitter. In general, emitters are made of plastic or other environmentally friendly materials. For this reason, research was carried out to obtain organic emitters with good performance based on a small coefficient of variance. The study was conducted by testing the level of uniformity of the drop at several levels of head pressure which was carried out with five repetitions. The uniformity level indicator is based on the coefficient of variance. The test results show that at low pressure, the coefficient of variance is higher than the higher head. The coefficient of variance testing carried out at head pressures of 34.46 cm, 72.66 cm and 113.30 cm was obtained at 51.24, 43.19 and 25.30, respectively. This value shows that the relationship between head and uniformity coefficient is inversely proportional. The value of uniformity level at high head pressure is better than lower head pressure for the end of the midrib. High uniformity at high heads due to the effect of drop differences caused by differences in emitter density reduced by large pressure.

Keywords: Sago midrib- Emitter- Coefficient of variance- Performance

Topic: Agriculture engineering