Inventory of indigenous irrigation systems
2010
Farmers planted onion, tomato, squash, watermelon, cucumber, garlic, eggplant, pepper, and corn after wet rice cropping and applied pumped irrigation water in the study sites. Furrow irrigation was the most popular irrigation method that farmers in Talavera, San Jose, and Muñoz in Nueva Ecija [Philippines] used in onion, tomato, watermelon, eggplant, and cucumber farms. Water flooding was applied in onion farms in Guimba while farmers in Batac, Ilocos Norte [Philippines] used a flexible hose to deliver water in tobacco, onion, garlic, tomato, and pepper farms. In furrow irrigation, the water sources were groundwater and surface water in localities surveyed. If the groundwater was used, a pump temporarily stays in the field during the cropping season and is connected to the suction pipe in the field. Also connected to the pump was the discharge pipe that delivers water into a small supplementary farm ditch. This ditch conveyed water into the furrows. A sack of soil was used as an indigenous check gate to stop water flow or letting it flow into another section of the field. In this method, the excess water flow or letting it flow into another section of the field. In this method, the excess water that accumulates at the end of the furrow is caught by a drainage ditch constructed at the end of each paddy field then brought to either another paddy field or a drainage canal or creek.
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