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Effect of nitrogen rates, mulching and antitranspirants on water use and water use efficiency of barley (Hordeum vulgare L.) varieties grown under dryland conditions

Published online by Cambridge University Press:  27 March 2009

S. K. Agarwal  and
Rajat De
S. K. Agarwal
Affiliation:
Division of Agronomy, Indian Agricultural Research Institute, New Delhi-110012, India
Rajat De
Affiliation:
Division of Agronomy, Indian Agricultural Research Institute, New Delhi-110012, India
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Summary

Field experiments were made under natural rainfall during the winter seasons of 1972–3 and 1973–4 at the Indian Agricultural Research Institute, New Delhi, to study the soil water use by barley varieties as influenced by nitrogen rates, mulching and foliar application of antitranspirants. Both Ratna and Vijaya varieties of barley had similar efficiency of water use.

Total water use was not much different for various treatments but straw mulch and kaolin decreased evapotranspiration at tillering and pre-flowering stages enabling the plants to use more water at critical stages of grain formation. Application of nitrogen, straw mulch and a foliar coating of kaolin increased the efficiency of water use.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 92 , Issue 2 , April 1979 , pp. 263 - 268
Copyright
Copyright © Cambridge University Press 1979

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