Agronomy Journal Journal of Natural Resources and Life Sciences Education
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Published online 1 November 1973
Published in Agron J 65:875-877 (1973)
© 1973 American Society of Agronomy
677 S. Segoe Rd., Madison, WI 53711 USA
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Zinc Response of Maize (Zea mays L.) Grown on Sandy Inceptisols in Western Nigeria1

O. A. Osiname2, B. T. Kang2, E. E. Schulte3 and R. B. Corey3

Field experiments were conducted with IITA maize (Zea mays L.) composite B at six locations ranging from forest to savannah in the Western State of Nigeria to assess the level of zinc response on sandy Inceptisols. Zinc, as Na2 Zn EDTA, was applied as broadcast application at 0, 1.0, 2.0, 4.0, and 8.0 kg/ha. Zinc response in terms of growth development and grain yield was limited to the savannah where yield increases of 1,747 kg/ha of grain were obtained with application of Zn at 1 to 2 kg/ha.

For optimum grain yield, 12 ppm Zn in tissue appeared minimal. Maize response to Zn application was most probable when the 0.1N HCl soil-extractable Zn was less than 1.0 ppm when measured at silking time.

Key Words: Zn tissue concentration • 0.1N HCl (extracted) soil zinc

1 Contribution from International Institute of Tropical Agriculture. Published with the approval of the Director, IITA, Journal Paper No. 4. Part of a thesis submitted in partial fulfillment for the Ph.D. degree at the University of Wisconsin, Madison.

2 Former Research Trainee (now Research Fellow, Institute of Agricultural Research and Training, University of Ife, Ibadan Nigeria) and Soil Scientist, International Institute of Tropical Agriculture, Ibadan, Nigeria, respectively.

3 Associate Professor and Professor of Soil Science, respectively, University of Wisconsin, Madison, Wis. 53706.

Received for publication January 5, 1973.




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Copyright © 1973 by the American Society of Agronomy.