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The Uptake of Native and Applied Phosphorus by Corn Crops Grown on Certain Kentucky Soils
Author(s) -
Weeks Martin E.
Publication year - 1944
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/sssaj1944.036159950008000c0036x
Subject(s) - phosphorus , citation , soil water , agricultural experiment station , agriculture , agronomy , agricultural economics , library science , agricultural science , computer science , environmental science , history , archaeology , chemistry , economics , biology , soil science , organic chemistry
E application of liming materials and phosphate J. fertilizer is perhaps the most important farm practice in maintaining and increasing crop yields on the poorer soils in Kentucky. Their use has not only caused a marked increase in yield, but also has caused a considerable increase in the phosphorus content of the crop. Recent investigations (4, 5) indicate that phosphorus is one of the elements associated with the indefinite and little understood factors of feeding quality. If this is true, the maintaining of a high level of total phosphorus absorption by the crop should be of special interest to the farmer. Previous work from the Kentucky Agricultural Experiment Station has shown that the growth and mineral composition of the corn crop are influenced by the phosphorus supply in the soil (3, 6). A correlation between uptake of this element and growth and quality of the crop was indicated. The degree of this correlation is, of course, dependent on the amount of phosphorus available to the crop, whether other elements besides phosphorus are limiting, and the effect of these other elements on the availability and utilization of phosphorus by the plant. Seasonal or climatic iactors seem to have an important influence in this uptake. It is the purpose of this investigation to point out the relationship between the phosphorus supply in the soil and the uptake of phosphorus by a number of corn crops grown on two of the Kentucky soil experiment fields.