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Did you mean quill R (14 results)?
Are current phosphorus risk indicators useful to predict the quality of surface waters in southern manitoba, Canada?
Salvano E, et al. J Environ Qual 2009. Among authors: Quilbe R. PMID 19704152
Several other watershed characteristics, including average soil test P concentrations, livestock density, proportion of land in annual crops, and the land's inherent capability for agricultural production, were strongly correlated with P concentrations in water (r = 0.80***, r = 0.63**, 0.76***, and -0.70**, respectively). ...
Several other watershed characteristics, including average soil test P concentrations, livestock density, proportion of land in annual crops …
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