Abstract
Technologies that ensure the availability of water for crops need to be developed in order for agriculture to be sustainable in the face of climate change. Irrigation is costly, so technologies need to be improved or newly developed, not only with the aim of the sustainable use of precious water resources, but also with the aim of reducing associated labor and energy costs, which lead to higher production costs. OPSIS (optimized subsurface irrigation system) is a super water-saving subsurface irrigation system developed to irrigate upland crops by soil capillarity. It is an environmentally-friendly, solar-powered automatic irrigation method with minimum energy consumption and operational costs. In soils vulnerable to drought damage, OPSIS can outperform other irrigation methods. This technical note introduces OPSIS.
Highlights
Rainfed agriculture occupies 80% of the world’s agricultural lands and currently contributes 60%of the world’s food production [1]
A were series of field and laboratory experiments were carried out to examine the performances of Optimized Subsurface Irrigation System (OPSIS)
OPSIS shows improved water-saving capabilities compared with other irrigation methods as it is able toEnsures function with minimum percolation, evaporation, and surface runoff
Summary
Rainfed agriculture occupies 80% of the world’s agricultural lands and currently contributes 60%. Water 2017, 9, 599 more likely to be adopted if they were designed to save precious water resources and at the same time keep associated labor and energy costs as low as possible Various irrigation methods, such as surface, subsurface, sprinkler, and drip irrigation, can be used to irrigate upland crops. New irrigation methods are being developed to irrigate upland crops that aim to use water more efficiently and effectively while minimizing costs so as to improve profitability and sustainability In this regard, it is essential to minimize major water losses through evaporation, surface runoff, and percolation in order to economize on the limited availability of water, while driving down the labor and energy requirements and keeping operational costs to a minimum. Automated system, it should drastically bring down the operational costs of irrigation
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