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A critical limit for the response of rice and wheat to applied zinc in Tarai soils

Published online by Cambridge University Press:  27 March 2009

R. Sakal ,
H. Sinha ,
A. P. Singh  and
K. N. Thakur
R. Sakal
Affiliation:
Tirhut College of Agriculture, Dholi, Muzaffarpur, Rajendra Agricultural University, Pusa (Bihar), India
H. Sinha
Affiliation:
Tirhut College of Agriculture, Dholi, Muzaffarpur, Rajendra Agricultural University, Pusa (Bihar), India
A. P. Singh
Affiliation:
Tirhut College of Agriculture, Dholi, Muzaffarpur, Rajendra Agricultural University, Pusa (Bihar), India
K. N. Thakur
Affiliation:
Tirhut College of Agriculture, Dholi, Muzaffarpur, Rajendra Agricultural University, Pusa (Bihar), India
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Summary

The DTPA-extractable Zn in 28 Tarai soils was found to be significantly correlated with Bray's ‘percent yield’ values for rice and wheat. The critical limit of ‘available’ Zn, below which responses of both crops to applied Zn may be expected, was 0–53 mg Zn/kg soil. On the basis of this critical limit, it may be inferred that in the 16 Zn deficient soils, rice and wheat yields would respond markedly to zinc application. The magnitude of crop response in these soils was greater in rice (39–244%; mean value 117%) than in wheat (33–101%; mean value 60%).

Type
Research Article
Information
The Journal of Agricultural Science , Volume 93 , Issue 2 , October 1979 , pp. 419 - 422
Copyright
Copyright © Cambridge University Press 1979

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References

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