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.
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 -
