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Irrigation of Dwarf Wheats in the Yaqui Valley of Mexico

Published online by Cambridge University Press:  03 October 2008

R. A. Fischer ,
J. H. Lindt  and
A. Glave
R. A. Fischer
Affiliation:
International Maize and Wheat Improvement Centre (CIMMYT), Londres 40, Mexico, 6, D.F.
J. H. Lindt
Affiliation:
International Maize and Wheat Improvement Centre (CIMMYT), Londres 40, Mexico, 6, D.F.
A. Glave
Affiliation:
International Maize and Wheat Improvement Centre (CIMMYT), Londres 40, Mexico, 6, D.F.
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Summary

The response of the latest wheat cultivars to irrigation regimes was studied between 1970 and 1975 in a heavy soil of the Yaqui Valley of north-west Mexico. Yield showed greatest sensitivity to water shortage in the period 65–110 days after seeding (spike emergence around 90 days), due largely to responses in grains/m2. More frequent irrigation increased yields 5–10% over the average of 7 t/ha obtained with the commonly-adopted five irrigation regime. Various irrigation criteria were tested: potential evapotranspiration calculations seemed the most useful. Measurement of leaf permeability (with an air flow porometer) showed more promise than the use of plant water potential (measured with a pressure chamber).

Type
Research Article
Information
Experimental Agriculture , Volume 13 , Issue 4 , October 1977 , pp. 353 - 367
Copyright
Copyright © Cambridge University Press 1977

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References

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