Phosphorus loss potential and phosphatase activities in paddy soils

S. Wang, X. Liang, G. Liu, H. Li, X. Liu, F. Fan, W. Xia, P. Wang, Y. Ye, L. Li, Z. Liu and J. Zhu
Additional contact information
S. Wang: Institute of Soil and Fertilizer and Resources and Environment, Jiangxi Academy of Agricultural Sciences/Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture, P.R. China/Key Laboratory of Crop Ecophysiology and Farming System for the Middle and Lower Reaches of the Yangtze River, Ministry of Agriculture, P.R. China/National Engineering and Technology Research Center for Red Soil Improvement, Nanchang, P.R. China
X. Liang: Institute of Environmental Science and Technology, College of Environmental and Resources Sciences, Zhejiang University, Hangzhou, P.R. China
G. Liu: Institute of Soil and Fertilizer and Resources and Environment, Jiangxi Academy of Agricultural Sciences/Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture, P.R. China/Key Laboratory of Crop Ecophysiology and Farming System for the Middle and Lower Reaches of the Yangtze River, Ministry of Agriculture, P.R. China/National Engineering and Technology Research Center for Red Soil Improvement, Nanchang, P.R. China
H. Li: Zhejiang Academy of Agricultural Sciences, Hangzhou, P.R. China
X. Liu: Institute of Soil and Fertilizer and Resources and Environment, Jiangxi Academy of Agricultural Sciences/Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture, P.R. China/Key Laboratory of Crop Ecophysiology and Farming System for the Middle and Lower Reaches of the Yangtze River, Ministry of Agriculture, P.R. China/National Engineering and Technology Research Center for Red Soil Improvement, Nanchang, P.R. China
F. Fan: Institute of Soil and Fertilizer and Resources and Environment, Jiangxi Academy of Agricultural Sciences/Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture, P.R. China/Key Laboratory of Crop Ecophysiology and Farming System for the Middle and Lower Reaches of the Yangtze River, Ministry of Agriculture, P.R. China/National Engineering and Technology Research Center for Red Soil Improvement, Nanchang, P.R. China
W. Xia: Institute of Soil and Fertilizer and Resources and Environment, Jiangxi Academy of Agricultural Sciences/Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture, P.R. China/Key Laboratory of Crop Ecophysiology and Farming System for the Middle and Lower Reaches of the Yangtze River, Ministry of Agriculture, P.R. China/National Engineering and Technology Research Center for Red Soil Improvement, Nanchang, P.R. China
P. Wang: Institute of Soil and Fertilizer and Resources and Environment, Jiangxi Academy of Agricultural Sciences/Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture, P.R. China/Key Laboratory of Crop Ecophysiology and Farming System for the Middle and Lower Reaches of the Yangtze River, Ministry of Agriculture, P.R. China/National Engineering and Technology Research Center for Red Soil Improvement, Nanchang, P.R. China
Y. Ye: Institute of Environmental Science and Technology, College of Environmental and Resources Sciences, Zhejiang University, Hangzhou, P.R. China
L. Li: Institute of Environmental Science and Technology, College of Environmental and Resources Sciences, Zhejiang University, Hangzhou, P.R. China
Z. Liu: Institute of Soil and Fertilizer and Resources and Environment, Jiangxi Academy of Agricultural Sciences/Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture, P.R. China/Key Laboratory of Crop Ecophysiology and Farming System for the Middle and Lower Reaches of the Yangtze River, Ministry of Agriculture, P.R. China/National Engineering and Technology Research Center for Red Soil Improvement, Nanchang, P.R. China
J. Zhu: Renewable Energy and Environmental Engineering, Department of Bioproducts and Biosystems Engineering, Southern Research and Outreach Center, University of Minnesota, Waseca, USA

Plant, Soil and Environment, 2013, vol. 59, issue 11, 530-536

Abstract: The effects of phosphorus (P) fertilizer on P loss potential, soil Olsen-P and neutral phosphatase activities in paddy soils fertilized with superphosphate or pig manure (PM) were evaluated in this paper. Data were collected from a field experiment in the Tai Lake Basin, China. Superphosphate rates were 0, 17.5, 26.7, and 35.0 kg P/ha, and PM rates were 0, 1.4, 2.1, and 2.8 t/ha for each crop, respectively. Soil Olsen-P in the plow layer increased to a greater extent with PM than with superphosphate. Pig manure increased neutral phosphatase activities in the plow layer compared with PM-free treatment. In contrast, superphosphate inhibited neutral phosphatase activities compared with superphosphate-free treatment. Spring application of P fertilizer markedly increased the total P of surface water in November (< 0.01 vs. 0.10 mg/L) compared with P-free treatment. The total P of shallow groundwater at a 75 cm depth was ~0.01 mg/L. Phosphorus fertilizer did not influence Olsen-P or neutral phosphatase activities under the plow layer. Downward movement of P did not occur. Appropriate rate of P application of 26.2 kg P/ha for each crop in this soil reduced the risk of P loss in the paddy wetland ecosystem.

Keywords: soil Olsen-P; neutral phosphatase activity; water total phosphorus; loss potential; paddy wetland ecosystem (search for similar items in EconPapers)
Date: 2013
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DOI: 10.17221/626/2013-PSE

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