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Studies on Evapotranspiration of Some Aquatic Weeds

Published online by Cambridge University Press:  12 June 2017

Oto Brezny ,
Indu Mehta  and
Ram Krishna Sharma
Oto Brezny
Affiliation:
Chambal Land and Water Use and Management Project, UNDP, Kota Rajasthan, India
Ram Krishna Sharma
Affiliation:
Chambal Land and Water Use and Management Project, UNDP, Kota Rajasthan, India
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Abstract

The evapotranspiration of six dominant emersed and floating weeds was studied. Evapotranspiration of water-chestnut (Trapa natans L. var. bispinosa Roxb.), waterlettuce (Pistia stratiotes L.), and swamp morningglory (Ipomea aquatica Forsk.) did not increase water losses significantly. Evapotranspiration of waterhyacinth (Eichornia crassipes (Mart) Solms.) was 30 to 40% higher, that of narrowleaf cattail (Typha augustifolia L.) was 60 to 70% higher, and that of purple nutsedge (Cyperus rotundus L.) was 130 to 150% higher than evaporation from a free water surface under equivalent conditions. Positive correlations (significant at the 1% level) were found between some meterological factors (daily maximum air temperature and daily average wind velocity), evaporation from free water surface, and evapotranspiration from aquatic plants studied.

Type
Research Article
Information
Weed Science , Volume 21 , Issue 3 , May 1973 , pp. 197 - 204
Copyright
Copyright © 1973 Weed Science Society of America 

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References

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