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Nitrogen Effects on Cotton: II. Soil and Petiole Analyses
Author(s) -
Gardner B. R.,
Tucker T. C.
Publication year - 1967
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/sssaj1967.03615995003100060023x
Subject(s) - petiole (insect anatomy) , agronomy , nitrate , yield (engineering) , growing season , environmental science , fertilizer , soil test , nitrogen fertilizer , nitrogen , malvaceae , biology , soil water , chemistry , botany , soil science , ecology , hymenoptera , materials science , organic chemistry , metallurgy
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.