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All Journal International Journal on Food, Agriculture and Natural Resources (IJFANRES)
Tewabe, Dires
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Agriculture, Biological Sciences & Forestry

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Enhancing water productivity and crop yield through participatory approaches in small-scale irrigation schemes: A case study of shimburit small scale irrigation schemes in the Amhara region, Ethiopia Tewabe, Dires
International Journal on Food, Agriculture and Natural Resources Vol 6, No 3 (2025): Ij-FANRes
Publisher : Food, Agriculture and Natural Resources - NETWORKS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46676/ij-fanres.v6i3.493

Abstract

Small-scale irrigation schemes in Ethiopia are pivotal for improving agricultural productivity and food security. However, challenges such as poor management, infrastructural deficiencies, and suboptimal agronomic practices hinder their potential. This study evaluates the Shimburit small-scale irrigation scheme in Ethiopia’s Amhara region, focusing on water productivity and the impact of improved irrigation technologies. Employing a mixed-method approach, data were collected through surveys, interviews, and field demonstrations comparing full-package treatments (integrated advanced irrigation and crop management) with conventional farmer practices. Three representative locations were selected from local farmers as a replications and wheat was used as a test crop to demonstrate improved water and crop technologies in this scheme. The results revealed significant challenges in the sustainability of the schemes, with current irrigated areas reduced to 25% of the initially designed capacity. Poor water management practices, seepage in unlined canals, and inadequate maintenance were identified as major issues. However, the adoption of improved irrigation technologies demonstrated substantial benefits. The result showed that the full-package treatment gave 3.97 tons ha-1 of wheat yield (significantly outperformed conventional farmer practices (2.47 tons ha-1), with water productivity increasing from 0.55 to 0.94 kg m-3. The result reveals that adopting the advanced irrigation and crop management practice improve wheat yield by 60.7% and water productivity by 70.9% as compared to the farmer’s conventional practice. The study revealed that adopting improved technologies, rehabilitating infrastructure, and building farmer capacity are essential for enhancing irrigation performance and supporting Ethiopia’s agricultural development goals.Keywords: Wheat, Improved Practices, Conventional Practice, Water Productivity
Effect of Irrigation Frequency and Depth on Yield and Water Productivity of Field Pea at Koga and Rib Irrigation Scheme, Ethiopia Tewabe, Dires
International Journal on Food, Agriculture and Natural Resources Vol 6, No 3 (2025): Ij-FANRes
Publisher : Food, Agriculture and Natural Resources - NETWORKS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46676/ij-fanres.v6i3.494

Abstract

Efficient irrigation scheduling is crucial for optimizing crop yield and water productivity, particularly in water-scarce regions. This study evaluated the effects of different irrigation frequencies and depths on the yield and water productivity of field pea (Pisum sativum L.) at the Koga and Rib irrigation schemes in Ethiopia over two growing seasons. A factorial experiment with two irrigation intervals (10 and 14 days) and five irrigation depths (50%, 75%, 100%, 125%, and 150% of crop water requirement) was conducted using a split-plot design with three replications. The results revealed that irrigation scheduling significantly influenced both grain yield and water productivity at both sites. At Koga, the highest grain yield (2.12 t ha⁻¹) and optimal water productivity (0.55 kg m⁻³) were achieved by irrigating at 100% crop water requirement (CWR) every 10 days. Conversely, at Rib, the highest yield (3.21 t ha⁻¹) and water productivity (1.05 kg m-3) were obtained with 75% CWR applied every 10 days. Increasing irrigation depth beyond these optimal levels did not further enhance yield and led to a decline in water productivity. These findings suggest that site-specific irrigation scheduling is essential for maximizing field pea production while improving water use efficiency. The study recommends irrigating field pea at 100% CWR every 10 days in Koga and 75% CWR every 10 days in Rib to achieve the best balance between yield and water conservation.Keywords:  Irrigation Scheduling, Water Productivity, Field pea, Crop Water Requirement
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