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http://dx.doi.org/10.5389/KSAE.2017.59.5.031

Estimation of Irrigation Requirements for Red Pepper using Soil Moisture Model with High Resolution Meteorological Data  

Shin, Yong-Hoon (Department of Rural Systems Engineering, Seoul National University)
Choi, Jin-Yong (Department of Rural Systems Engineering and Research Institute for Agriculture & Life Sciences, Seoul National University)
Lee, Seung-Jae (National Center for Agro-Meteorology, Seoul National University)
Lee, Sung-Hack (Department of Rural Systems Engineering, Seoul National University)
Publication Information
Journal of The Korean Society of Agricultural Engineers / v.59, no.5, 2017 , pp. 31-40 More about this Journal
Abstract
The aim of this study is to estimate net irrigation requirements for red pepper during growing period using soil moisture model. The soil moisture model based on water balance approach simulates soil moisture contents of 4 soil layers in crop root zone considering soil moisture extraction pattern. The LAMP (Land-Atmosphere Modeling Package) high resolution meteorological data provided from National Center for AgroMeteorology (NCAM) was used to simulate soil moisture as the input weather data. Study area for the LAMP data and soil moisture simulation covers $36.92^{\circ}{\sim}37.40^{\circ}$ in latitude and $127.36^{\circ}{\sim}127.94^{\circ}$ in longitude. Soil moisture was monitored using FDR (Frequency Domain Reflectometry) sensors and the data were used to validate the simulation model from May 24 to October 20 in 2016. The results showed spatially detailed soil moisture pattern under different weather conditions and soil texture. Net irrigation requirements were also different by location reflecting the spatially distributed weather condition. The average of the requirements was 470.7 mm and averages about soil texture were 466.8 mm, 482.4 mm, 456.0 mm, 481.7 mm, and 465.6 mm for clay loam, sandy loam, silty clay loam, clay, and sand respectively. This study showed spatial differences of soil moisture and the irrigation requirements of red pepper about spatially uneven weather condition and soil texture. From the results, it was demonstrated that high resolution meteorological data could provide an opportunity of spatially different crop water requirement estimation during the irrigation management.
Keywords
Soil moisture; Irrigation requirement; High resolution meteorological data;
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Times Cited By KSCI : 8  (Citation Analysis)
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