EVAPOTRANSPIRATION BY IRRIGATED ALFALFA AS RELATED TO SEASON AND GROWTH STAGE

1 July 1965

journal article
research article
Published by Canadian Science Publishing in Canadian Journal of Plant Science

Vol. 45 (4) , 309-313
https://doi.org/10.4141/cjps65-063

Abstract

The results of a plot experiment wherein three levels of irrigation were applied during three successive summers showed that the average daily rates of evapotranspiration by alfalfa ranged from 0.05 to 0.36 in. per day. The maximum evapotranspiration rate was associated with complete ground cover and at this stage equalled potential evapotranspiration. Except for early in the season the conversion factor for estimating evapotranspiration from evaporation for irrigation scheduling by the budget method or soil moisture balance sheet should approximate the potential evapotranspiration–evaporation ratio.