1. Allen, R.G., Pereira, S., Raes, M., Smith, M., 1998. Crop evapotranspiration. Guidelines for computing water requirements. FAO–ONU, Rome, Irrigation and Drainage Paper no. 56, 300 pp.
2. Weather, dry matter production and yield;Biscoe,1977
3. Effect of drought on growth and water use of sugar beet;Brown;J. Agric. Sci. Camb.,1987
4. Risposta produttiva all’irrigazione della barbabietola a semina autunnale in ambiente meridionale;Caliandro;L’Inform. Agrario,1996
5. Irrigation schedules for sugarbeets on medium and coarse texutured soils in the Northern Great Plains;Cassel;Agron. J.,1976