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Response of flooded rice grown on a vertisol from northern nigeria to zinc sources and methods of application

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Summary

Greenhouse and laboratory studies were conducted to study the effect of zinc sources and methods of application on correcting zinc deficiency in flooded rice grown on Vertisol from Ngala, northern Nigeria, using the variety IR-20.

Plant dry matter yield was similar for ZnSO4, ZnEDTA, metallic Zn and fritted Zn with mixed soil application. Zinc uptake was affected in the following order; ZnSO4 > ZnEDTA > metallic Zn > fritted Zn. Comparable dry matter yield and zinc uptake were obtained with mixing, surface broadcasting and banding of ZnEDTA. Mixing the fritted Zn gave higher dry matter yield and zinc uptake than broadcasting or banding.

Seed soaking with a suspension of fritted Zn resulted in higher dry matter yield and zinc uptake than with ZnEDTA solution. Seed soaking for 24 hours with fritted Zn suspension at a concentration of about 0.5 per cent Zn appeared to be a suitable method for applying zinc with direct seeded rice.

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Authors and Affiliations

  1. International Institute of Tropical Agriculture, Ibadan, Nigeria

    B. T. Kang & E. G. Okoro

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  1. B. T. Kang
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  2. E. G. Okoro
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Kang, B.T., Okoro, E.G. Response of flooded rice grown on a vertisol from northern nigeria to zinc sources and methods of application. Plant Soil 44, 15–25 (1976). https://doi.org/10.1007/BF00016951

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  • DOI: https://doi.org/10.1007/BF00016951

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