volume 43 issue 1 (march 2009) : 52-56

SOIL TEST BASED FERTILIZER RECOMMENDATION UNDER INTEGRATED PLANT NUTRITION SYSTEM FOR POTATO (SOLANUM TUBEROSUM. L) IN HILLY TRACTS OF NILGIRIS DISTRICT

A

A. Gayathri

A

A. Vadivel

R

R. Santhi*

P

P. Murugesa Boopathi

R

R. Natesan

Affiliations

¹Department of Soil Science and Agricultural Chemistry, Tamil Nadu Agricultural University, Coimbatore-641 003, India

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Cite article:- Gayathri A., Vadivel A., Santhi* R., Boopathi Murugesa P., Natesan R. (2025). SOIL TEST BASED FERTILIZER RECOMMENDATION UNDER INTEGRATED PLANT NUTRITION SYSTEM FOR POTATO (SOLANUM TUBEROSUM. L) IN HILLY TRACTS OF NILGIRIS DISTRICT. Indian Journal of Agricultural Research. 43(1): 52-56. doi: .

ABSTRACT

Soil test based fertilizer prescription equations under Integrated Plant Nutrition System (STCRIPNS)
were developed for potato on Ultisols. Making use of these equations, nomograms were
formulated for a range of soil test values and desired yield targets of potato. These equations
were validated on farmers’ fields and it was found that the per cent achievement of the targets
aimed was more than 90 and STCR - IPNS for 40 t ha-1 recorded relatively higher response ratio
(38.05 kg kg-1) and benefit - cost ratio (15.3) over other treatments indicating the validity of the
equations for prescribing fertilizer doses for potato.

KEYWORDS

REFERENCES

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Table 3. Results of Test verification trials of potato (mean of three trials)
Treatments Tuber yield (t ha-1) % Achievement RR (kg kg -1) BCR
Control 12.55 – – – Blanket 26.44 – 28.93 12.45
STCR - 30 t ha-1 NPK alone 27.55 92 31.90 12.27
STCR - 30 t ha-1 IPNS* 29.22 97 37.08 14.71
STCR - 40 t ha-1 NPK alone 38.77 97 34.85 13.98
STCR - 40 t ha-1 IPNS* 40.38 101 38.05 15.3* received vermicompost @ 2 t ha-156 INDIAN JOURNAL OF AGRICULTURAL RESEARCH
Santhi, R and Natesan, R (2004) J. Ecobiol.,16:449-454.
Santhi, R. et al. (1999) J. Indian Soc. Soil Sci. 47:288-294.
Subba Rao, A.and Srivastava, S. (1998) In: 15th Annual Report of the All India Coordinated Research Project forinvestigations on Soil Test Crop Response Correlation, IISS, Bhopal. p. 16.
Subbiah, B.V. and Asija, G.L. (1956) Curr. Sci. 25:259-260.
Varghese S, S and Rani Perumal (1998) J. Res. (ANGRAU) 26:86-88.

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SOIL TEST BASED FERTILIZER RECOMMENDATION UNDER INTEGRATED PLANT NUTRITION SYSTEM FOR POTATO (SOLANUM TUBEROSUM. L) IN HILLY TRACTS OF NILGIRIS DISTRICT

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REFERENCES

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