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Water saving rice cultivation using sheet-pipe subsurface irrigation
Chusnul Arif1, Satyanto Krido Saptomo1, Budi Indra Setiawan1
1Department of Civil and Environmental Engineering, IPB University, Bogor, Indonesia.
Heliyon
|May 21, 2024
Summary
Sheet-pipe subsurface irrigation (SSI) reduces water use by up to 50.5% and improves water productivity. However, this water-saving rice cultivation method may decrease yields by up to 18.6%.
Area of Science:
- Agricultural Science
- Water Management
- Climate Change Adaptation
Background:
- Water conservation in rice cultivation is critical due to climate change.
- Sheet-pipe technology offers innovative subsurface irrigation and drainage.
- Assessing its impact on rice yield and water use efficiency is essential.
Purpose of the Study:
- To evaluate rice plant responses to reduced water levels using sheet-pipe technology.
- To analyze water productivity and water use efficiency compared to conventional flooded irrigation.
Main Methods:
- Conducted two experiments: sheet-pipe subsurface irrigation (SSI) and conventional flooded irrigation (CFI).
- SSI maintained water 5-10 cm below soil surface (85-95% saturation).
- CFI maintained water 2-3 cm above soil surface.
Main Results:
- SSI reduced irrigation water by 37.5-50.5% and increased water use efficiency (WUE) by up to 70.8%.
- Water productivity improved by 3.2-10.4% with SSI.
- Rice yield decreased by 15.5-18.6% under SSI compared to CFI.
Conclusions:
- Optimizing water conservation via SSI can negatively impact rice yield.
- Further research is needed to determine optimal water levels balancing yield and water savings.
- This is crucial for adapting rice cultivation to drier, warmer climates.
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