About
ETcrop is a simple application for estimating the evapotranspiration demand of common agricultural crops.
The application was develop in an effort to help water managers and producers to quickly estimate the water needs of
irrigated crops.
How it works
Crop evapotranspiration is estimated as the product between daily reference evapotranspiration
and a crop coefficient. Reference evapotranspiration is computed using a mass-transfer model and the
crop coefficient is approximated using green canopy cover. Recent research studies are consistently showing
that canopy cover can be effectively used as a proxy to track crop growth and crop coefficients.
References
The
ETcrop web-app was built on concepts described in the following peer-reviewed studies:
- Patrignani, A. and Ochsner, T.E., 2015. Canopeo: A powerful new tool for measuring fractional green canopy cover. Agronomy Journal, 107(6), pp.2312-2320.
- Trout, T.J. and DeJonge, K.C., 2018. Crop water use and crop coefficients of maize in the great plains. Journal of Irrigation and Drainage Engineering, 144(6), p.04018009.
- Muhammad, M.K.I., Nashwan, M.S., Shahid, S., Ismail, T.B., Song, Y.H. and Chung, E.S., 2019. Evaluation of empirical reference evapotranspiration models using compromise programming: a case study of Peninsular Malaysia. Sustainability, 11(16), p.4267.
- Dalton, J., 1802. Experimental essays on the constitution of mixed gases. Manchester Literary and Philosophical Society Memo, 5, pp.535-602.
Copyright Andres Patrignani - 2020
