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Cotton Root Growth and Uptake of Nutrients: Relation of Phosphorus Uptake to Quantity, Intensity, and Buffering Capacity
Author(s) -
Khasawneh F. E.,
Copeland Jane P.
Publication year - 1973
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/sssaj1973.03615995003700020027x
Subject(s) - loam , nutrient , dry matter , phosphorus , greenhouse , agronomy , gossypium hirsutum , intensity (physics) , crop , chemistry , zoology , horticulture , environmental science , biology , soil water , soil science , physics , organic chemistry , quantum mechanics
Cotton ( Gossypium hirsutum var. ‘Stoneville 213’) was grown in greenhouse pots containing Hartsells fine sandy loam. Four rates of P were employed and the crop was harvested on three different dates. Dry matter yield of tops and uptake of P were measured. Roots were recovered and their length determined. These data were used to calculate a rate of P uptake per meter of roots which in turn was related to quantity and intensity of soil P. A parameter that combines the effects of quantity, intensity, and P buffering capacity was derived, and rate of P uptake was found to be related to this parameter. Rate of P uptake increased with rate of root growth.