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Relationship of Zinc Uptake by Corn and Sorghum to Soil Zinc Measured by Three Extractants
Author(s) -
Wear John I.,
Evans Clyde E.
Publication year - 1968
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/sssaj1968.03615995003200040035x
Subject(s) - sorghum , zinc , chemistry , zea mays , sorghum bicolor , agronomy , soil water , positive correlation , zoology , nuclear chemistry , biology , soil science , environmental science , medicine , organic chemistry
Corn ( Zea mays L.) and sorghum ( Sorghum vulgare Pers.) plants were grown in a controlled environmental growth chamber in 12 medium‐ to coarse‐textured soils with two levels of Zn for each soil. These levels were the native amount in each soil and with 2.5 ppm added. After 4 weeks plants were harvested and Zn concentration and total Zn uptake were measured. Each soil was extracted with three different solutions: (i) 0.05 N HCl plus 0.025 N H 2 SO 4 , (ii) 0.1 N HCl, and (iii) 0.05 N EDTA at pH 7.0. Zinc uptake by the plants was correlated with the level of soil Zn determined by each extractant. The highest correlation was obtained for corn and sorghum with extractant (i). Correlation coefficients for corn for extractants (i), (ii), and (iii) were 0.89, 0.82, and 0.62, respectively. Correlation coefficients for sorghum for extractants (i), (ii), and (iii) were 0.70, 0.63, and 0.44, respectively.