Effect of Irrigation Methods and Irrigation Levels on Yield and Water Productivity of Onion at Awash Melkasa, Ethiopia
Volume 4, Issue 2, December 2020, Pages: 33-42
Received: Mar. 26, 2020;
Accepted: Apr. 16, 2020;
Published: Aug. 27, 2020
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Anbese Ambomsa, Oromia Agricultural Research Institute, Adami Tulu Agricultural Research Center, Zeway, Ethiopia
Teshome Seyoum, Department of Irrigation Engineering, Haramaya University, Haramaya, Ethiopia
Tilahun Hordofa, Ethipia Agricultural Research Institute, Melkasa Agricultural Research Center, Adama, Ethiopia
Water is scarce resource in Central Rift Valley of Ethiopia and is major limiting factor for crop production. The field experiment was conducted in 2018 at Melkasa Agricultural Research Center during the off-season to identify irrigation method and irrigation application level that maximizes productivity of onion per unit of water consumed and enhanced onion crop production. The experiment was carried out using split plot design in RCBD having three replications. The experiment consisted of two irrigation methods viz., furrow and drip irrigation as main plot and three levels of manageable allowable depletion viz., 120%, 100% and 80% as sub-plot. The ANOVA revealed that their interaction had a significant (p<0.01) effect on bulb diameter, total bulb yield, marketable bulb yield and water productivity. The maximum total bulb yield (41.76 t/ha), marketable bulb yield (38.39 t/ha), bulb diameter (6.02 cm) and water productivity (13.05 kg/m3) were observed from drip irrigation method at 80% management allowed depletion application, while significantly lower of 34.48 t/kg, 31.6 t/ha, 5.11 cm, and 6.84 kg/m3 respectively were recorded from furrow irrigation method at 120% management allowed depletion application. Among all tested treatments drip irrigation method with 80% MAD was the best practice because of its high yield, water productivity.
Effect of Irrigation Methods and Irrigation Levels on Yield and Water Productivity of Onion at Awash Melkasa, Ethiopia, Industrial Engineering.
Vol. 4, No. 2,
2020, pp. 33-42.
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