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P and K Nutrition of Rice (Oryza sativa) in the Sudan Kenana

Published online by Cambridge University Press:  03 October 2008

Osman A. A. Ageeb  and
Yousif H. Yousif
Osman A. A. Ageeb
Affiliation:
Kenana Research Station, Abu Na'ama, Sudan
Yousif H. Yousif
Affiliation:
Kenana Research Station, Abu Na'ama, Sudan
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Summary

Field and plant tissue tests under Sudan Kenana conditions revealed that rice does not respond to K but response to P was very clear, both from visual symptoms, tissue analyses and in yields. As early as the seedling stage, a concentration of leaf blade-P of about 1300 ppm is considered optimum. Yield, and level of soil application, corresponding to this value were 5000 kg/ha paddy rice and 42·8 kg/ha P2O5 respectively. A low yield (2400 kg/ha) was obtained from plants receiving no P2O5. Phosphate application reduced the grain protein.

Type
Research Article
Information
Experimental Agriculture , Volume 14 , Issue 1 , January 1978 , pp. 33 - 39
Copyright
Copyright © Cambridge University Press 1978

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References

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