A Model and Its Performance of Evapotranspirative Irrigation Tested to Grow Water Lettuces

Efficient use of irrigation water is crucial to face the uncertain trend a declining resource. Ensuring supply that matches crop evapotranspiration (ETc) while optimizing soil moisture challenging. This study aimed come up with model an system can immediately meet ETc without using electricity. To test proposed balance trial was established in lettuces. The consisted 15 pots connected serial pipes and hoses through bottoms pots. first pot used as level controller last drain collector. Irrigation would flow had levels lower than setting level. Testing carried out on rainy days resulted considerably higher rainwater (99.8%) being utilized compared (0.2%). For lettuces, yield 258.9 g/m2, efficiency reached 95% economical physical productivity were 2.17 g/L 2.28 g/L, respectively. could be maintained within expected range unsaturated condition. Further tests however are still needed, which currently underway.