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Effect of Phosphorus on Some Physical Properties of Soils: II. Water Retention
Author(s) -
Lutz J. F.,
Pinto Rafael A.,
GarciaLagos Ricardo,
Hilton H. Gill
Publication year - 1966
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/sssaj1966.03615995003000040012x
Subject(s) - soil water , phosphate , phosphorus , water retention , chemistry , tillage , monocalcium phosphate , agronomy , environmental chemistry , soil science , environmental science , biology , fish meal , organic chemistry , fishery , fish <actinopterygii>
Field studies showed that the use of phosphate fertilizers increased the amount of water present in the soil and facilitated tillage. Crop yields were closely related to the increased water content. Laboratory studies showed that P appreciably increased the water‐holding properties of soils. This was found to be directly related to the increase in the negative charge of the soil particles and the charge was closely related to the Al‐phosphate/Fe‐phosphate ratio. In general increases in water‐holding capacity were caused only by the larger rates of P, but in some instances 50 ppm P gave significant increases.