Abstract
Indonesia’s dry agricultural lands development requires support of appropriate water-saving irrigation technology to cope water shortages. Especially for mung bean, irrigation based on crop-water requirement is needed due to the short vegetation phase that water shortages could increase the risk of yield lost. The objective of this study is to investigate the effect of irrigation level on the growth and yield of mung bean. This research conducted in acid soil through two factors of completely randomized design in a greenhouse. The first factor was irrigation volume, i.e., 40, 60, 80 and 100% of the crop water requirement, the second factor was mung bean varieties, i.e., Merak and Vima 1, with three replicates respectively. The results showed that drip irrigation increased water use efficiency. Moreover, water requirement for mung bean during the growth period was 320.72 mm, with tolerable water stress just reached up to 80% of the standard water requirement. The response of irrigation water to crop height was shown at 30 Day After Planting (DAP). This research also identified that Vima 1 was significantly responsive and adaptive to water stress, so it has a very good opportunity to be developed on dry land acid soil in Indonesia.
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