Hostname: page-component-78c5997874-8bhkd Total loading time: 0 Render date: 2024-11-08T01:57:50.469Z Has data issue: false hasContentIssue false
  • English
  • Français

Studies on the effect of green manuring in nitrogen economy in a rice–wheat rotation using a 15N technique

Published online by Cambridge University Press:  27 March 2009

N. N. Goswami ,
R. Prasad ,
M. C. Sarkar  and
S. Singh
N. N. Goswami
Affiliation:
Indian Agricultural Research Institute, New Delhi 110012, India
R. Prasad
Affiliation:
Indian Agricultural Research Institute, New Delhi 110012, India
M. C. Sarkar
Affiliation:
Indian Agricultural Research Institute, New Delhi 110012, India
S. Singh
Affiliation:
Indian Agricultural Research Institute, New Delhi 110012, India
Get access Rights & Permissions [Opens in a new window]

Summary

A field experiment using 15N was carried out at the Indian Agricultural Research Institute, New Delhi during the crop year 1985–1986 to investigate the possible economy in fertilizer nitrogen applied to rice and succeeding wheat by growing a summer leguminous green manure (Sesbania aculeata) and incorporating it in soil before transplanting rice. Grain and straw yields of rice with 60 kg N/ha after green manuring were slightly greater than with 120 kg N/ha after summer fallow. Thus summer green manuring can lead to an economy of 60 kg N/ha in rice. 15N analysis showed that green manuring contributed 4·7–5·6% N of the total taken up by rice and 1·9–4·8% of that taken up by the succeeding wheat, depending upon the rate of fertilizer N applied to rice.

15N analysis showed that at 60 kg N/ha applied to rice, 35·4% was recovered by rice, 41% by the succeeding wheat and 16·7% was left in the 0–45 cm soil layer after summer fallow; after green manuring 32·8% N was recovered by rice, 3·0% by succeeding wheat and 22·6% was left in the soil. Thus 56·2 and 58·4% of applied N could be accounted for after summer fallow and green manuring, respectively. At 120 kg N/ha about 60–61% of applied N could be accounted for. Thus about 40–44% of N applied to rice was lost by the various loss mechanisms operating in rice fields.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 111 , Issue 3 , December 1988 , pp. 413 - 417
Copyright
Copyright © Cambridge University Press 1988

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Meelu, O. P. & Morris, R. A. (1984). Integrated management of plant nutrients in rice and rice-based cropping systems. Fertilizer News 29(12), 65–70.Google Scholar
Prasad, R. (1982). The use of nitrification inhibitors and slow-release nitrogen fertilizers for manipulation of the growth and yield of rice. In Chemical Manipulation of Crop Growth and Development (ed. McLaren, J. S.), pp. 451–464. London: Butterworths.CrossRefGoogle Scholar
Prasad, M. & Prasad, R. (1983). Removal of nitrogen, phosphorus and potassium by rice–wheat double cropping system as affected by duration of rice variety, methods of planting rice and levels and sources of nitrogen. Plant and Soil 70, 287–295.CrossRefGoogle Scholar
Sharma, S. N. & Prasad, R. (1980 a). Effect of rates of nitrogen and relative efficiency of sulphur coated urea and nitrapyrin treated urea in dry matter production and nitrogen uptake of rice. Plant and Soil 55, 389–396.CrossRefGoogle Scholar
Sharma, S. N. & Prasad, R. (1980 b). Carry-on effects of rates and sources of nitrogen applied to rice on the succeeding spring wheat crop. Journal of Agronomy & Crop Science 149, 349–354.Google Scholar
Tiwari, K. N., Pathak, A. N. & Tiwari, S. P. (1980). Fertilizer management in cropping system for increased efficiency. Fertilizer News 25(3), 3–20.Google Scholar