NEW MEXICO CLIMATE CENTER

New Mexico Crop Information

Saltceder coefficient(k) to calculate evapotranspiration(ET) where Et=k*Eto

Eto = reference evapotranspiration or potential evapotranspiration referenced to grass.

A third order polynomial was also fit to the data and the coefficient of variation decreased to  0.69

Crop Coefficient uses growing degree days (GDD) accumulated from planting based on the averaging method of calculating GDD with  no cutoff temperatures and a base temperature is 50 F. The climate station used to calculate the reference evapotranspiration was the north Bosque station. 

The reference for this work is published at http://tamarisk.nmsu.edu/. The full report is at ftp://tamarisk.nmsu.edu/public/publication/report99.pdf entitled Riparian evapotranspiration of the middle Rio Grande. by King and Bawazir 2000.