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Inoculation of irrigated soya bean in the Sudan Gezira

Published online by Cambridge University Press:  27 March 2009

N. O. Mukhtar  and
Sayda A. Abu Naib
N. O. Mukhtar
Affiliation:
Gezira Research Station, Wad Medani, Sudan
Sayda A. Abu Naib
Affiliation:
Gezira Research Station, Wad Medani, Sudan
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Summary

Soya bean variety Semmes failed to nodulate with a number of R.japonicum strains. Some of these were applied to the seed in a carrier based on Nile silt.

A three-strain composite in peat gave good nodulation and reasonable N fixation. Inoculation significantly outyielded 100 kg N/ha added as urea in three equal portions at sowing, 1 and 2 months after sowing. Plant dry matter, nodule dry matter, yield, yield components and seed protein were also significantly enhanced by inoculation.

Phosphorus applied at 50 and 100 kg P2O5/ha in combination with a starter dose of nitrogen (10 kg/ha) with inoculation both gave erratic and inconclusive results.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 108 , Issue 1 , February 1987 , pp. 183 - 187
Copyright
Copyright © Cambridge University Press 1987

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