Hostname: page-component-586b7cd67f-rdxmf Total loading time: 0 Render date: 2024-11-30T20:12:38.788Z Has data issue: false hasContentIssue false
  • English
  • Français

Determination of fertilizer requirements of potato on the basis of soil tests in the north-western hills of India

Published online by Cambridge University Press:  27 March 2009

R. C. Sharma  and
H. C. Sharma
R. C. Sharma
Affiliation:
Division of Crop and Soil Science, Central Potato Research Institute, Simla 171 001, HP, India
H. C. Sharma
Affiliation:
Division of Crop and Soil Science, Central Potato Research Institute, Simla 171 001, HP, India
Get access Rights & Permissions [Opens in a new window]

Summary

In field experiments with potato conducted from 1981 to 1983 on acid hill soils of Simla, a technique was developed to work out the relative contribution of soil and fertilizer nutrients to potato production. The locations accounted for more variation in tuber yield than the fertilizer effects. The value of soil tests in explaining the variation due to locations was modified by years. On average, nitrate, organic carbon and available K explained 59, 25 and 41% of the variation. The response to fertilizer N was significant in all yea s and to K was significant in 1982 only, but that to fertilizer P was not significant in any year. The fertilizer doses of N and K were calculated both from the soil test based regression equations and the fertilizer response equations. The dose of N varied from 129 to 133 kg/ ha in different years but the response per kg N at the economic dose varied from 0·05 to 0·13 t/ha.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 109 , Issue 1 , August 1987 , pp. 171 - 175
Copyright
Copyright © Cambridge University Press 1987

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

Bray, R. H. & Kurtz, L. T. (1945). Determination of total organic and available forms of phosphorus in soils. Soil Science 59, 39–45.CrossRefGoogle Scholar
Cochran, W. G. & Cox, G. M. (1957). Experimental Designs. 2nd ed., pp. 273–274. New York: John Wiley.Google Scholar
Jackson, M. L. (1967). Soil Chemical Analysis. New Delhi: Prentice Hall of India.Google Scholar
Sharma, H. C. & Sharma, R. C. (1983). An alternative approach for making fertilizer recommendations on the basisofsoil tests. Indian Journal of Agricultural Statistics 35(3), 108–126.Google Scholar
Sharma, R. C. (1982). Single extraction procedure; for determining NO3, P and K in soil. Annual Scientific Report of the Central Potato Research Institute, Simla, pp. 87–88.Google Scholar
Sharma, R. C., Grewal, J. S. & Sharma, H. C. (1981). Soil organic carbon as a common index of P and K availability to potatoes in acidic brown hill soils of Simla. Journal of the Indian Society of Soil Science 29 (2), 257–260Google Scholar