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Comparative studies of upland and swamp rice varieties (Oryza sativa L.) II. Effect of varying supply of manganese on growth and yield

Published online by Cambridge University Press:  27 March 2009

B. A. C. Enyi
B. A. C. Enyi
Affiliation:
Faculty of Agriculture, University of Nigeria, Nsukka, Nigeria
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Summary

Upland rice (Agbede) and swamp rice (BG 79) varieties grown on flooded soil, and on soil maintained at 80 and 100% moisture saturation were sprayed with solutions containing 0 ppm (MO), 10 ppm (Ml), and 20 ppm (M2) of manganese.

The M 2 treatment depressed total dry weight and dry weights of leaf laminae, stems, leaf sheaths and root of both varieties grown on soil maintained at either 80 or 100% moisture saturation. The M 1 treatment increased the ear weight of Agbede grown on soil maintained at either 80 or 100% moisture saturation, while the M 2 treatment increased the ear weight of plant grown on saturated soil. In flooded soil both the M 1 and M 2 treatments significantly increased dry weight of Agbede plants, but only the M 2 treatment increased ear dry weight of BG 79. The ear weight of Agbede plants receiving M 0 and M 1 treatment decreased with increasing soil moisture while that of BG 79 increased.

It is considered that manganese supply limits yield of Agbede grain grown on flooded soil.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 71 , Issue 1 , August 1968 , pp. 15 - 17
Copyright
Copyright © Cambridge University Press 1968

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References

Aiyer, S. P. (1946). The place of minor elements in rice growing. Indian Fmg 7, 11–14.Google Scholar
Enyi, B. A. C. (1968a). Comparative studies of upland and swamp rice varieties. I. Effect of soil moisture on growth and nutrient uptake. J. agric. Sci., Camb. 71, 1–13.Google Scholar
Gerretsen, F. C. (1949). Manganese in relation to photosynthesis. I. Carbon dioxide assimilation and the typical symptoms of deficiency in the oat. Pl. Soil 1, 346–58.Google Scholar