An Evapotranspiration Model for Nursery Plants Grown in a Lysimeter Under Field Conditions

Authors : Halil KIRNAK

Pages : 57-63

View : 7 | Download : 8

Publication Date : 2001-01-01

Article Type : Research Paper

Abstract :A modified combination model that used ambient temperature,relative humidity,solar radiation,air velocity and leaf area index insert ignore into journalissuearticles values(LAI); as inputs was developed for nursery plants, and its prediction was compared to the measured ET of the plant. A nursery plant of red maple insert ignore into journalissuearticles values(Acer rubrum); grown in a lysimeter under field conditions was used to test it. This modified combination model was shown to accurately estimate the evapotranspiration insert ignore into journalissuearticles values(ET); of a potted red maple insert ignore into journalissuearticles values(R2=0.79);. The most significant driving parameters for ET were solar radiation level and vapor pressure deficit insert ignore into journalissuearticles values(VPD);. An exponential relationship between stomatal resistance and solar radiation for red maple was established.This study showed that a combination ET model involves both environmental conditions and plant canopy characteristic is the best way to predict evatranspiration rate of the nursery plants.
Keywords : Evapotranspiration, Acer rubrum, solar radiation, Vapor pressure deficit, Stomata, Evapotranspiration model, Nursery production