Fruit Institute. Evapotranspiration of the pear Viliamova variety in Kiustendil conditions.
Fruit Institute of Kiustendil, Bulgaria, 1998.
The total average evapotranspiration of pear Viliamova variety in the conditions of Kiustendil in Bulgaria is 670 mm, in a loam soil, maintaining a level of soil moisture above 75 to 80% of field capacity during cycle of the crop in a soil layer 60 cm deep, obtaining this level of humidity higher yields.
The average daily evapotranspiration is 1.6 mm / day from the beginning of the growing season until the end of flowering; 3.4 mm / day in the first stage of fruit development; 4.3 mm / day in the intensive stage of development fruits; 2.6 mm / day from harvest to the end of the growing season. The total water demand applied was 2680 m3 by using 5 to 6 irrigations.