Soil phosphorus and relationship to phosphorus balance under long-term fertilization

Benhua Sun, Quanhong Cui, Yun Guo, Xueyun Yang, Shulan Zhang, Mingxia Gao and David W. Hopkins
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Benhua Sun: College of Natural Resources & Environment, Northwest A&F University, Yangling, Shaanxi Province, P.R. China
Quanhong Cui: College of Natural Resources & Environment, Northwest A&F University, Yangling, Shaanxi Province, P.R. China
Yun Guo: College of Natural Resources & Environment, Northwest A&F University, Yangling, Shaanxi Province, P.R. China
Xueyun Yang: College of Natural Resources & Environment, Northwest A&F University, Yangling, Shaanxi Province, P.R. China
Shulan Zhang: College of Natural Resources & Environment, Northwest A&F University, Yangling, Shaanxi Province, P.R. China
Mingxia Gao: College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling, Shaanxi Province, P.R. China
David W. Hopkins: Royal Agricultural University, Cirencester, Gloucestershire, UK

Plant, Soil and Environment, 2018, vol. 64, issue 5, 214-220

Abstract: Temporal changes in the concentrations of plant-available phosphorus (P) in soil (Olsen-P), total soil-P and P activation coefficient (the ratio of Olsen-P to residual-P (i.e. an approximation to total-P)) were measured in plots that received consistent inorganic nitrogen, phosphorus and potassium plus organic fertilizers annually. Maize and winter wheat crops were grown in rotation for 24 years. Olsen-P and P activation coefficient declined significantly in the earlier years (< 12 years) for treatments that did not include any P fertilizer, and increased over the same period for the P-fertilized treatments. The rates of change in the Olsen-P and P activation coefficient values were positively related to P balance. In the later years, the Olsen-P and P activation coefficient plateau values were positively related to the P balance.

Keywords: loess soil; phosphorus activation coefficient; wheat-maize rotation (search for similar items in EconPapers)
Date: 2018
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Citations: View citations in EconPapers (2)

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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpse:v:64:y:2018:i:5:id:709-2017-pse

DOI: 10.17221/709/2017-PSE

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