Abstract

Effective irrigation practices, management of irrigation water, amount and time irrigation water application are constraints to improve production, minimize water use, and protect natural resources. The experiment was conducted for three consecutive years at Hadero Tunto Zuria Woreda in farmers’ fields to identify the impact of irrigation regime which allow achieving optimum Tomato yield. From the study site soil was collected to determine its physical and chemical properties of the soil, daily climate data were collected from nearest meteorological station. The experiment has four levels of treatments (125% MAD, 100% MAD, 75 % MAD and farmer practice) which were arranged in RCBD with four replications. The long year’s climatic data were collected and analyzed by CROPWAT8.0 software to calculation of the right amount of water needed for the irrigation. The treatment was conducted under furrow irrigation method and Parshall flumes were used to measure inflow rates at each field.. The experimental field has 16 plots and each plot size was 4m by 5m dimension. Space between rows 90cm and between the plant 30cm was used. The result shows that maximum total yield (33.94 t/ha) was obtained from 100 % MAD and minimum yield (26.82t/ha) was obtained from 125 % MAD. The results of unmarketable yield has no significant difference (P<0.05) between the three treatment (125% MAD, 100%MAD and 75%MAD). The highest water use efficiency (5.64kg/m3) was obtained from 100%MAD. The highest net income (288116 birr/ha) was obtained at 100 % MAD that received 495.5mm seasonal irrigation water depth. The largest MRR (2156%) was acquired at 100 % MAD. From the result applying the optimum crop water requirement (100%MAD) of tomato was significantly increase the yield, economic benefit, and water use efficiency. Therefore, Appling irrigation water to the right amount at right time was increases yield of Tomato.