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The Effect of Soil Water Movement vs. Phosphate Diffusion On Growth and Phosphorus Content of Corn and Soybeans
Author(s) -
Shapiro Raymond E.,
Armiger W. H.,
Fried Maurice
Publication year - 1960
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1960.03615995002400030012x
Subject(s) - phosphorus , dilution , diffusion , chemistry , phosphate , volume (thermodynamics) , serial dilution , yield (engineering) , agronomy , soil water , zoology , soil science , environmental science , biology , materials science , medicine , physics , alternative medicine , organic chemistry , pathology , quantum mechanics , metallurgy , thermodynamics
The effect of soil water movement vs. phosphate diffusion on plant growth and composition was studied by soil‐sand dilution and continuous movement of the soil solution by recirculation. Yield, percent P, and P uptake of corn and soybeans remained approximately constant at soil‐sand dilutions up to 1:1.1 by volume, but decreased at greater dilutions in both the recirculated and noncirculated (normal watering) systems. Recirculation increased yield and percent P of corn and soybeans. These increases were attributed partly to the sampling of a larger soil volume for replenishment of the soil solution. The diffusion process alone was unable to renew P at the root surface as fast as the observed uptake rate. Soil water movement probably accounts for a much greater transfer of P to the root surface than diffusion.