Abstract
AbstractSurface irrigation is the main irrigation system used in the inter-Andean valleys of Bolivia. However, the region’s steep terrain precludes the use of conventional surface irrigation methods. Zigzag corrugated furrows, the most widely used irrigation method in the region, have proved suitable for the local conditions and are environmentally sound as they substantially reduce soil loss from water erosion. Satisfactory water management, however, appears to be lacking so our paper aims to study water use and suggest improvements. The experimental field work was carried out in Cebollullo, a rural community 2,780 m above sea level located southeast of the city of La Paz. The characteristics of the furrows vary with crop type and soil (class and slope). Lettuce crops grown in an experimental 566-m2 plot with an average slope of 16.46% were studied. The plot was irrigated a total of 21 times at 2–3 days intervals and the effects of 10 of the irrigation events were evaluated taking weekly measurements dur...
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