Makkink's equation for evapotranspiration applied to unstressed maize

✍ Scribed by A. F. G. Jacobs; H. A. R. de Bruin

• Publisher: John Wiley and Sons
• Year: 1998
• Tongue: English
• Weight: 135 KB
• Volume: 12
• Category: Article
• ISSN: 0885-6087
• DOI: 10.1002/(sici)1099-1085(19980615)12:7<1063::aid-hyp640>3.0.co;2-2

✦ Synopsis

The crop factor method is applied to unstressed maize, in which grass is the reference crop, and the evapotranspiration of the latter is determined with the simpli®ed equation of Makkink as proposed by De Bruin (1987). Using the crop factor published by Feddes (1987), a good agreement is found with measurements collected during the growing season of 1985 at the Sinderhoeve (518 59 H N, 58 45 H E) near Renkum in The Netherlands. It appears that Makkink's method yields slightly better results than the Penman±Monteith equation using surface resistances ®tted to the data set itself.