Keywords : Water Productivity
Subsurface Water Retention Technology Improves Water Use Efficiency and Water Productivity for Hot Pepper
journal of kerbala university,
Volume 14, Issue 1, Pages 125-135
The subsurface water retention technology (SWRT) is modern method for detention irrigation or rainfall water under surface soil in root zone depth in order to save water in soil profile for long period. In this study water use efficiency and water productivity for hot pepper inside greenhouse were evaluated and compared using in three treatments plots planted with hot pepper using: subsurface water retention technology (T1), organic matter (T2) and tillage (T3). The study work was conducted in the field located in Sadat Al Hindiya, north of Babylon governorate 78 km south of Baghdad. The growing season of hot pepper was starting on September 2016 and ended on May 2017. Irrigation quantities, time of irrigation and soil moisture contents were measured daily and sometimes weekly for all treatments plots. The results indicated that crop yield and water use efficiency for the three experimental plots, T1, T2 and T3 were: 4.151, 3.476 and 3.272 kg/m2 and 5.54, 3.7 and 3.48 kg/m3, respectively with increasing values in yield and water use efficiency in T1 comparing with T2 and T3 by 19.42, 26.87% and 50 and 59 %, respectively. Additionally, the new concept of water productivity of hot pepper for T1, T2 and T3 was: 66836.4, 36812.9, and 33909.2 ID/m3, respectively, with increasing value in T1 comparing with T2 and T3 by 81.6 and 97.1 %, respectively.