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Integrated management of straw and urea nitrogen in lowland rice under a rice-wheat rotation

Published online by Cambridge University Press:  27 March 2009

B. S. Mahapatra ,
G. L. Sharma  and
Nayab Singh
B. S. Mahapatra
Affiliation:
Department of Agronomy, G. B. Pant University of Agriculture and Technology, Pantnagar, Nainital, UP, 263 145, India
G. L. Sharma
Affiliation:
Department of Agronomy, G. B. Pant University of Agriculture and Technology, Pantnagar, Nainital, UP, 263 145, India
Nayab Singh
Affiliation:
Department of Agronomy, G. B. Pant University of Agriculture and Technology, Pantnagar, Nainital, UP, 263 145, India
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Summary

The average yields of a 3-year field experiment (1985/86–1987/88) on a mollisol at Pantnagar showed that, at 87 kg N/ha, applying urea supergranules (USG) gave 0·47 t/ha more rice grain than split application of prilled urea (PU). The data also showed that, at this rate of N, one-third (29 kg N/ha) of inorganic N can be substituted by fresh straw (wheat or rice) applied at planting to give similar rice yields. However, at a total of 58 kg N/ha, 29 kg N/ha applied as straw with 29 kg N/ha of PU or USG reduced yield compared with 58 kg N/ha of PU or USG alone, except in 1986/87. Yield differences were attributed to differences in number of panicles/m2, N uptake by the crop and mean wet soil NH4+-N obtained at various stages of crop growth during 1986/87 and 1987/88. Wheat grown after rice in 1985/86 and 1986/87 showed significant residual effects in plots with straw application and these were correlated with the rate of hydrolysable organic N (HN) obtained after rice.

Type
Crops and Soils
Information
The Journal of Agricultural Science , Volume 116 , Issue 2 , April 1991 , pp. 217 - 220
Copyright
Copyright © Cambridge University Press 1991

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References

REFERENCES

Broadbent, F. E. (1979). Mineralization of organic nitrogen in paddy soils. In Nitrogen and Rice (Eds Watanabe, I., Rockword, I. W. G. & Mendoza, C.), pp. 543–553. Los Baños, Philippines: International Rice Research Institute.Google Scholar
Islam, A. & Islam, A. (1973). Chemistry of submerged soils and growth and yield of rice. I. Benefits from submergence. Plant and Soil 39, 555–565.CrossRefGoogle Scholar
Jackson, M. L. (1973). Soil Chemical Analysis. New Delhi: Prentice Hall of India.Google Scholar
Mahapatra, B. S. (1984). Studies on electro-chemical changes and nitrogen transformation with bio, organic and chemical nitrogen under submerged rice soil and its residual effect on wheat. PhD thesis, G.B. Pant University of Agriculture and Technology, Pantnagar, India.Google Scholar
Mahapatra, B. S. & Sharma, G. L. (1989). Integrated management of Sesbania, Azolla and urea nitrogen in lowland and rice under a rice-wheat cropping system. Journal of Agricultural Science, Cambridge 113, 203–206.CrossRefGoogle Scholar
Patnaik, S. & Mandal, L. N. (1982). Chemistry of submerged rice soils. In Review of Soil Research in India. 12th International Congress of Soil Science, New Delhi, 8–16 February, 1982 (Eds Randhawa, N. S., Goswami, N. N., Perihar, S. S., Abrol, I. P., Murthy, R. S., Krishnamurti, G. S. R., Singh, Sant, Ghosh, A. B., Sastry, T. G. & Narayanasamy, G.), pp. 181–189. New Delhi: Indian Society of Soil Science.Google Scholar
Piper, C. S. (1957). Soil and Plant Analysis. Bombay: Hans Publication.Google Scholar
Ponnamperuma, F. N. (1984). Straw as a source of nutrients for wetland rice. In Organic Matter and Rice (Eds Banta, S. & Mendoza, C. V.), pp. 117–136. Los Baños, Philippines: International Rice Research Institute.Google Scholar
Russo, S. (1974). Effects of straw incorporation on growth and paddy yield. Riso 25, 19–36 [in Italian].Google Scholar
Sharma, G. L. & Mahapatra, B. S. (1987). Vertical distribution of soil solution ammonium-N and grain yield of rice with integrated nitrogen management. International Rice Research Newsletter 12 (2), 39.Google Scholar
Snedecor, G. W. & Cochran, W. G. (1967). Statistical Methods. Calcutta: Oxford University Press and Indian Book House.Google Scholar