TY - JOUR
T1 - Effect of moisture conditions in rice paddies on phosphorus fractionation in agriculture soils of rapidly developing regions of China
AU - Darilek, Jeremy L.
AU - Sun, Weixia
AU - Huang, Biao
AU - Wang, Zhigang
AU - Qi, Yanbing
AU - Weindorf, David C.
N1 - Funding Information:
The authors are grateful for funding from the Natural Science Foundation of China (41071299 and 40773075) and the Special Research Foundation of the Public Natural Resource Management Department from Ministry of Environmental Protection of China (201109018).
PY - 2011/1
Y1 - 2011/1
N2 - Moisture conditions in rice paddies play an important role in phosphorus (P) cycling and may affect P loss to nearby water bodies. This study seeks to identify factors that contribute to P-fraction transformations in flooded rice paddies on Cambosols and Anthrosols using Zhangjiagang County of the Yangtze River delta region, China, as a study area. Soil samples preserved under flooded and aerobic conditions (n = 60) were collected, and P fractions and soil properties were measured. Under flooded conditions, soluble and loosely bound P significantly decreased to half of aerobic levels, aluminum/iron-bound P increased by 66%, and organic-bound P decreased by 64%. Soil organic matter, cation exchange capacity, pH, and active iron were well correlated with soil P fractions under both moisture conditions across two soil orders despite a disparity in soil properties. Further research goals that would aid in specific fertilizer recommendations and management strategies are identified.
AB - Moisture conditions in rice paddies play an important role in phosphorus (P) cycling and may affect P loss to nearby water bodies. This study seeks to identify factors that contribute to P-fraction transformations in flooded rice paddies on Cambosols and Anthrosols using Zhangjiagang County of the Yangtze River delta region, China, as a study area. Soil samples preserved under flooded and aerobic conditions (n = 60) were collected, and P fractions and soil properties were measured. Under flooded conditions, soluble and loosely bound P significantly decreased to half of aerobic levels, aluminum/iron-bound P increased by 66%, and organic-bound P decreased by 64%. Soil organic matter, cation exchange capacity, pH, and active iron were well correlated with soil P fractions under both moisture conditions across two soil orders despite a disparity in soil properties. Further research goals that would aid in specific fertilizer recommendations and management strategies are identified.
KW - Aerobic and flooded conditions
KW - Phosphorus transformation
KW - Rice paddies
KW - Soil properties
UR - http://www.scopus.com/inward/record.url?scp=79960259220&partnerID=8YFLogxK
U2 - 10.1080/00103624.2011.584599
DO - 10.1080/00103624.2011.584599
M3 - Article
AN - SCOPUS:79960259220
SN - 0010-3624
VL - 42
SP - 1752
EP - 1764
JO - Communications in Soil Science and Plant Analysis
JF - Communications in Soil Science and Plant Analysis
IS - 14
ER -