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 Gardner, B. R. Articles by Tucker, T. C. Search for Related Content PubMed Articles by Gardner, B. R. Articles by Tucker, T. C. Agricola Articles by Gardner, B. R. Articles by Tucker, T. C.

Nitrogen Effects on Cotton: II. Soil and Petiole Analyses¹

ABSTRACT

Evidence is presented to show the validity of soil and petiole analyses as diagnostic tools in planning N fertilizer programs. A highly significant correlation was found between the initial soil nitrate level and yield of seed cotton (Gossy pium hirsutum) without additional N when the soil was sampled as outlined. The level of nitrate N in leaf petioles was found to be a good indicator of the N nutrition of the cotton plant. The N needs of cotton can be determined throughout the growing season by utilizing soil and petiole analyses.

¹ Contribution from the Dep. of Agr. Chem. and Soils, Arizona Agr. Exp. Sta., Tucson, Ariz. Presented before Div. S-4, Soil Sci. Soc. Amer., Aug. 1962. Published with the approval of the Director as Journal Article No. 1154. Investigation was supported in part by a grant-in-aid from the US Steel Corp. This paper resulted from a dissertation submitted by the senior author in partial fulfillment for the Ph.D. degree at the Univ. of Arizona.

² Former Graduate Assistant and Professor and Soil Scientist, respectively. Dep. of Agr. Chemistry and Soils, Univ. of Arizona, Tucson. Senior author is now Assistant Agricultural Chemist, Arizona Agr. Exp. Sta., Yuma.

Received for publication February 7, 1967. Accepted for publication August 8, 1967.