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http://dx.doi.org/10.21289/KSIC.2021.24.3.333

Quality Evaluation of Irrigation Scheduling on Upland Crops by Crop Development Rates  

Kim, Dong-Hyun (Dept. of Bio-Industrial Machinery Engineering, Pusan National University)
Kim, Jongsoon (Dept. of Bio-Industrial Machinery Engineering, Pusan National University)
Kwon, Soon Hong (Dept. of Bio-Industrial Machinery Engineering, Pusan National University)
Park, Jong Min (Dept. of Bio-Industrial Machinery Engineering, Pusan National University)
Choi, Won-Sik (Dept. of Bio-Industrial Machinery Engineering, Pusan National University)
Kwon, Soon Gu (Dept. of Bio-Industrial Machinery Engineering, Pusan National University)
Publication Information
Journal of the Korean Society of Industry Convergence / v.24, no.3, 2021 , pp. 333-341 More about this Journal
Abstract
Irrigation scheduling is a water management strategy of applying the proper amount of water in a plant's root zone at the right time to maximize profit. We conducted an experimental evaluation of the response of soybean, sorghum, and sesame to an irrigation scheduling scheme. The soil water contents were adjusted in the root zone between 20% and 28% to reflect changes in crop water consumption. The other ones fixed at 25% during the whole growing season were compared to evaluate the effectiveness of irrigation scheduling. Surface drip irrigation (SDI) were employed as an irrigation method. For all three crops, the evapotranspiration (ET) was the greatest at flowering stage (6.93 mm), followed by vegetative growth stage (5.00 mm) and maturity stage (2.53 mm). The irrigation amount was significantly reduced by 21.8% (soybean), 22.2% (sorghum), and 16.1% (sesame), respectively, compared with the ones at constant soil water content treatment. Their water use efficiency (WUE) were also much higher than the controls: 2.65-fold increase at soybean, 1.82-fold increase at sorghum, and 1.47-fold increase at sesame. These results showed that an effective irrigation scheduling on upland crops (soybean, sorghum, sesame) could increase crop yield while minimizing water use.
Keywords
Irrigation Scheduling; Upland Crops; Drip Irrigation; Growth Stages; Water Use Efficiency;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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