Identification of soil P fractions that are associated with P loss from surface runoff under various cropping systems and fertilizer rates on sloped farmland.
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ABSTRACT:
SUBMITTER: Li X
PROVIDER: S-EPMC5484473 | biostudies-literature | 2017
REPOSITORIES: biostudies-literature
Publications
Identification of soil P fractions that are associated with P loss from surface runoff under various cropping systems and fertilizer rates on sloped farmland.
Li Xinghua X Wang Baona B Yang Tewu T Zhu Duanwei D Nie Zhongnan Z Xu Junchi J
PloS one 20170626 6
Soil phosphorus (P) fractions and runoff P concentration were measured to understand the fate of soil P entering surface runoff water during summer cropping season of different double cropping systems under two fertilizer regimes. The dominant form of runoff P was particulate P (PP). Runoff total P (TP) was higher at the vegetative growth stage and lower at the crop reproductive stage. TP and PP were derived mainly from soil Olsen-P, Al-P and Fe-P and amounts increased with sediment content in r ...[more]
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