Effect of Temperature and Plow Pan on Water Movement in Monolithic Weighable Lysimeter with Paddy Sandy Loam Soil during Winter Season

Abstract

The monolithic weighing lysimeter is a useful facility that could directly measure water movement via layers, drainage, and evapotranspiration (ET) with precise sensors. We evaluated water movement through layers and water balance using the lysimeter with undisturbed paddy sandy loam soil, Gangseo soil series (mesic family of Anthraquic Eutrudepts classified by Soil Taxonomy) during winter season from Dec. 2014 to Feb. 2015. Daily ET indicated up to 1.5 mm in December and January and 2 mm in February. The abrupt increase of soil water tension at the depth of 0.1 m, when soil temperature at the same depth was below 2°C, was observed due to temporary frost heaving. The surface evaporation was less than reference ET below -15 kPa of soil water potential at the depth of 0.1 m. The maximum drainage rate was similar to the saturated hydraulic conductivity of a plow pan layer. Both upward and downward water movement, related to ET and drainage, were retarded by a plow pan layer. This study demonstrated that the lysimeter study could well quantify water balance components even under frost heaving during winter season and that a plow pan with low permeability could act as a boundary that affects drainage and evapotranspiration.

Tillage Effects on Evapotranspiration of Three Different Paddy Soils in Spring Season as Tested by Monolithic Weighable Lysimeters

“…Study site and soils The experiment was undertaken at the lysimeter station of the National Institute of Agricultural Sciences (NAS) in the southern part of South Korea (35°49'29"N, 127°2'46.4"E, sea level 33m). Undisturbed soil monolith lysimeters were utilized, which were designed with a 1 m 2 surface area and a depth of 1.5 m, described in Seo et al (2016). Three different types of paddy soil were extracted in surrounding areas and filled in individual lysimeters: silty clay loam soil involved in the Buyong series (Bg) of the fine, mixed, mesic family of Typic Endoaqualfs and loam and sandy loam soils included in the Gangseo series (Gt) of the coarse loamy, mixed, mesic family of Anthraquic Eutrudepts (RDA, 2015).…”

Nutrient Leaching and Crop Uptake in Weighing Lysimeter Planted with Soybean as Affected by Water Management

“…5 m , 10, 30, 55, 85, 125 cm , ( U M P -1 , U G T , Germany) (Suction probe system, UGT, Germany) (Weighing lysimeter, UGT, Germany) . Seo (2016) . 2013 10 .…”

Weighable Lysimeter Study for Water Balance Estimation of Chinese Cabbage in the Fall Season

“…The water balance for Chinese cabbage cultivation in the fall season on different upland soils using weighable lysimeters in 2017 and 2018. (Kim, 2003;Shin et al, 2004;Park et al, 2010), 최근에는 비교란 토양을 이용한 중량식 라이시미터를 활용하여 물수지 를 정확하게 산정하는 연구가 증가하고 있다 (Meißner et al, 2010;Anapalli et al, 2016;Seo et al, 2016;Ok et al, 2018). 중량식 라이시미터는 장비운영과 시설관리 등에 대한 비용 부담은 있으나 정확도 및 신뢰도가 높아 물수지 산정 연구에 많이 활용되고 있으며, 비교란 상태의 토양은 토양수분의 수직이동 양상을 보다 자연상태와 가깝게 해 석할 수 있다 (Seo et al, 2016;Ok et al, 2018).…”

“…(Kim, 2003;Shin et al, 2004;Park et al, 2010), 최근에는 비교란 토양을 이용한 중량식 라이시미터를 활용하여 물수지 를 정확하게 산정하는 연구가 증가하고 있다 (Meißner et al, 2010;Anapalli et al, 2016;Seo et al, 2016;Ok et al, 2018). 중량식 라이시미터는 장비운영과 시설관리 등에 대한 비용 부담은 있으나 정확도 및 신뢰도가 높아 물수지 산정 연구에 많이 활용되고 있으며, 비교란 상태의 토양은 토양수분의 수직이동 양상을 보다 자연상태와 가깝게 해 석할 수 있다 (Seo et al, 2016;Ok et al, 2018). 중량식 라이시미터를 활용하여 동절기 사양토에서 온도와 경반층 에 따른 토양수분이동 및 토성에 따른 토양수분함량 변화 (Seo et al, 2016)…”

“…중량식 라이시미터는 장비운영과 시설관리 등에 대한 비용 부담은 있으나 정확도 및 신뢰도가 높아 물수지 산정 연구에 많이 활용되고 있으며, 비교란 상태의 토양은 토양수분의 수직이동 양상을 보다 자연상태와 가깝게 해 석할 수 있다 (Seo et al, 2016;Ok et al, 2018). 중량식 라이시미터를 활용하여 동절기 사양토에서 온도와 경반층 에 따른 토양수분이동 및 토성에 따른 토양수분함량 변화 (Seo et al, 2016)…”