Determination of Wheat Evaporation (Triticum aestivum L.) under Different Irrigation Systems.

	Determination of Wheat Evaporation (Triticum aestivum L.) under Different Irrigation Systems.
Euphrates Journal of Agriculture Science
Article 1, Volume 5, Issue 2, 2013, Pages 119-123
Abstract
ABSTRACT : This study was carried out to calculate the component of evaporation for wheat and impact of depletion rate and under different irrigation depths on soil-water plant relationship particularly the soil water balance in root zoon. Field study was carried out at the field of the college of Agriculture Bagdad during 2008/2009. Abu-Graib 3 wheat cultivar seeds were planted. The water was applied at three depletion rates; 50%, 70%, 90%, due to available moisture. Irrigation water was applied at three different depths; 0-30 cm from planting to the end of growing season, 0-30 cm from planting to flowering stage then 0-60 cm from flowering stage to the end of growing season and 0-60 cm from planting to the end of growing season. Amount of Irrigation water was applied to satisfy water depletion in soil over the growing season. Calculated Water content deficit was based on measurements of the soil water content by gravimetric method. Microlysimeters were installed inside each plot to measuring evaporation for the layer 0-12 cm. Results of this study showed that Highest evaporation value was 145 mm/season under 50% depletion rate and 0-30 cm irrigation depth which constitutes 24.7% from the total evapotranspiration compared with evaporation values, 145mm/season and 142 mm/season which constitutes 23.4% and 21.4% for the 0-30 then 0-60 and 0-60 irrigation depth respectively. Lowest evaporation value 131 mm/season, which constitutes 20.3% from the total evapotranspiration were obtained under 90% depletion rate and 0-60 cm irrigation depth compared with evaporation values, 133 mm/season and 132 mm/season, which constitutes 23.5% and 22.1% for the total evapotranspiration for the 0-30 and 0-30 then 0-60 irrigation depth respectively.

Statistics Article View: 161 PDF Download: 84