@article{HGNHB8_2018_v37n4_317,
author={Kyung Hwa. Han},
title={Water-dispersible Clay Content in Summer Rainy Season for Korean Irrigated Rice Paddy Fields as Affected by Cultivated Years Using Heavy Agro-machinery and Soil Properties},
journal={Korean Journal of Environmental Agriculture},
issn={1225-3537},
year={2018},
volume={37},
number={4},
pages={317-323},
doi={10.5338/KJEA.2018.37.4.34},
url={https://doi.org/10.5338/KJEA.2018.37.4.34}
TY - JOUR
AU - Han, Kyung Hwa.
TI - Water-dispersible Clay Content in Summer Rainy Season for Korean Irrigated Rice Paddy Fields as Affected by Cultivated Years Using Heavy Agro-machinery and Soil Properties
T2 - Korean Journal of Environmental Agriculture
PY - 2018
VL - 37
IS - 4
PB - The Korean Society of Environmental Agriculture
SP - 317-323
SN - 1225-3537
AB - 우리나라 관개논의 여름철 강우기 Middleton’s 분산성 점토는 불검출 ~ 4.8% 의 범위로 나타났으며 최대값은 점토함량 18% 이상 토양에서 나타났으나 점토 분산성은 점토함량 18% 미만 토양에서 높게 나타났다. 대상지역의 60%에서 40마력이상 농기계를 사용한 경작연수가 길수록 분산성 점토 함량이 높은 값을 나타내었다. 단, 치환성 나트륨 함량 퍼센트의 차이가 큰 간척논은 예외로 나트륨함량이 높을수록 분산성 점토가 높았다.BACKGROUND:This study was conducted to evaluate the water-dispersible clay content of paddy soils over the country in the summer rainy season as affected by cultivated years using heavy agro-machinery and soil properties such as texture and exchangeable sodium percentage.METHODS AND RESULTS:Water-dispersible clay content of 16 soil series of Korean paddy soils over the country were investigated in summer rainy season from July to August, 2006 by Middleton’s method. Water-dispersible clay content ranged from non-detected to 4.8%, showing maximum value from the fine textured soils and high clay dispersibility in average from the coarse textured soils. Longer cultivated years using agro-machinery more than 40 hp result in higer water-dispersible clay content for 60% of studied paddy soils with less than 5% of exchangeable sodium percentage (ESP). Exceptionally, soils with relatively big difference of ESP at about 10 percent showed higher water-dispersible clay content with higher ESP.CONCLUSION:Long years of cultivation using agro-machinery with more than 40 hp enhanced water-dispersiblility of clay in approximately 60% of the studied paddy fields except for salt-affected soils.
KW - Agro-machinery
KW - Exchangeable sodium percentage
KW - Middleton’s method
KW - Paddy soil
KW - Water-dispersibility of clay
DO - 10.5338/KJEA.2018.37.4.34
UR - https://doi.org/10.5338/KJEA.2018.37.4.34
ER -
Han, K. H. (2018). Water-dispersible Clay Content in Summer Rainy Season for Korean Irrigated Rice Paddy Fields as Affected by Cultivated Years Using Heavy Agro-machinery and Soil Properties. Korean Journal of Environmental Agriculture, 37(4), 317-323.
Han, KH 2018, “Water-dispersible Clay Content in Summer Rainy Season for Korean Irrigated Rice Paddy Fields as Affected by Cultivated Years Using Heavy Agro-machinery and Soil Properties”, Korean Journal of Environmental Agriculture, vol. 37, no. 4, pp. 317-323. Available from: doi:10.5338/KJEA.2018.37.4.34
Han, Kyung Hwa, “Water-dispersible Clay Content in Summer Rainy Season for Korean Irrigated Rice Paddy Fields as Affected by Cultivated Years Using Heavy Agro-machinery and Soil Properties.” Korean Journal of Environmental Agriculture 37.4 (2018): 317-323.
1. Han KH. Water-dispersible Clay Content in Summer Rainy Season for Korean Irrigated Rice Paddy Fields as Affected by Cultivated Years Using Heavy Agro-machinery and Soil Properties. Korean Journal of Environmental Agriculture [Internet]. 2018;37(4): 317-323. Available from: doi:10.5338/KJEA.2018.37.4.34.
Han, Kyung Hwa, “Water-dispersible Clay Content in Summer Rainy Season for Korean Irrigated Rice Paddy Fields as Affected by Cultivated Years Using Heavy Agro-machinery and Soil Properties.” Korean Journal of Environmental Agriculture 37, no.4 (2018): 317-323. doi: 10.5338/KJEA.2018.37.4.34.