HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Stelly, M. Articles by Morris, H. D. Search for Related Content PubMed Articles by Stelly, M. Articles by Morris, H. D. Agricola Articles by Stelly, M. Articles by Morris, H. D.

Residual Effect of Phosphorus on Cotton Grown on Cecil Soil as Determined with Radioactive Phosphorus¹

ABSTRACT

A field experiment was conducted on Cecil sandy clay loam in 1951 to determine the residual effect on cotton of superphosphate applied in 1949 at different rates and by different methods on limed and unlimed soil. Crop yield, phosphorus content of the plants, and percentage of phosphorus in the plants derived from the fertilizer were criteria by which these variables were evaluated.

Increases in seed cotton yield and phosphorus content of the plants in 1951 resulted from the phosphorus applied in 1949. The response was directly related to the amount of phosphorus applied and to the dilute-acid soluble phosphorus in the soil at time of planting.

No significant response in yield, phosphorus content, or percentage phosphorus in the plant derived from the fertilizer was obtained from the addition of lime. The method of applying the phosphorus in 1949, broadcast or drilled, had no significant effect on any of the criteria evaluated.

Approximately 28% of the plant phosphorus was derived from the fertilizer applied in 1951 to soil which had received no phosphorus in 1949. The percentage of the phosphorus in the plants derived from the fertilizer applied in 1951 decreased sharply and directly with increases of phosphorus additions in 1949.

¹ Contribution from Department of Agronomy, College Experiment Station, University of Georgia, Athens, Georgia. Presented before Division IV, Soil Science Society of America, Cincinnati, Ohio, Nov. 21, 1952.

² Professors of Agronomy.

Received for publication December 9, 1952.