Determination of Optimal Irrigation Scheduling for Coffee (Coffee Arabica L.) at Gera, South West of Ethiopia

International Journal of Research Studies in Agricultural Sciences Pub Date : 2022-04-01 DOI:10.20431/2454-6224.0701005

Etafa Tilahun, Minda Tadesse, A. Asefa, Robel Admasu, Tesfaye Shimbir

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Abstract

Afield experiment was carried out from 2011 to 2018 cropping seasons at experimental site of Gera agricultural research sub-center to investigate the effect of soil moisture depletion and to identify optimal soil moisture depletion level on growth, yield and water productivity of coffee Arabica (coffee Arabica L.) of variety 74165. The treatments consists of five allowable soil moisture depletion level (ASMDL), i.e, 60% ASMDL, 80% ASMDL, 120% ASMDL, 140% ASMDL and control irrigation of 100% ASMDL. These five treatments were laid out in complete randomized block design with three replications. The irrigation water was applied based on allowable soil moisture depletion of (p=40%) considered for coffee Arabica. The over year analysis of variance showed that soil moisture depletion level significantly (P<0.05) affected coffee yield and water productivity. The average highest coffee yield of 2330 Kg/ha was obtained from the 120% ASMDL by applying 10145 m3/ha of water, while the FAO recommended treatment of 100% ASMDL produced the lowest yield of 1780 Kg/ha. The 60%, 80%, 100% and 140% treatments were not statistically significant from each another. Therefore, 120% ASMDL treatment gave above mean value of yield and water productivity and hence can be used as the allowable soil moisture depletion for coffee Arabica (coffee Arabica L.) in a coffee growing area of Gera.

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埃塞俄比亚西南部Gera地区咖啡(Coffee Arabica L.)最佳灌溉计划的确定

2011 - 2018年种植季，在吉拉农业研究分中心试验地开展了土壤水分枯竭对阿拉比卡咖啡(coffee Arabica L.) 74165品种生长、产量和水分生产力的影响及最佳土壤水分枯竭水平的田间试验。处理包括5个允许土壤水分枯竭水平(ASMDL)，即60%、80%、120%、140% ASMDL和控制灌溉100% ASMDL。这5个处理采用完全随机区组设计，3个重复。灌溉水的施用是基于考虑到阿拉比卡咖啡的允许土壤水分损耗(p=40%)。多年方差分析表明，土壤水分枯竭水平显著影响咖啡产量和水分生产力(P<0.05)。通过施用10145立方米/公顷的水，从120%的ASMDL中获得了2330公斤/公顷的平均最高产量，而粮农组织推荐的100% ASMDL处理产生了1780公斤/公顷的最低产量。60%、80%、100%、140%处理间差异无统计学意义。因此，120% ASMDL处理的产量和水分生产力高于平均值，因此可以作为Gera咖啡种植区阿拉比卡咖啡(coffee Arabica L.)的允许土壤水分耗损。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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International Journal of Research Studies in Agricultural Sciences

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