Optimization Scheduling Irrigation in Strawberry Greenhouse by Using Tensiometer

A correct scheduling of irrigation (timing and volume of water) is very important parameter to improve quality and quantity of yield in greenhouse condition. This study aimed to investigate the possibility of improving the management of strawberry greenhouses and increase economic yield (quantitative and qualitative) is conducted base on optimum irrigation planning by using tensiometer in greenhouses condition in Iran. Three levels of irrigation scheduling based upon tensiometer measurements (0.2 and 0.4 bar) and experiences of farmers (As control) were considered. Tensiometer was used to schedule irrigations whenever the soil matric potential reached 0.2 and 0.4 bar. The present study showed that the highest yield per plant resulted from irrigation schedules based on 0.2 bar compare with the experiences of farmers. Of course there was no significant difference between 0.2 and 0.4 bars in this respect. Also results showed that the volume of water used in treatments of 0.2¡ 0.4 bars and experiences of farmers were respectively 47.6¡ 21.2 and 99.6 liters per plant and irrigation management increased water productivity in irrigation schedule 0.4 bar (21.7 grams per liter) compared with 0.2 bar (10.5 grams per liter) and experiences of farmers amount of 4.6 grams per liter. According to the results of this study¡ irrigation scheduling based upon 0.4 bar recommended Because of the increased water use efficiency and reduces water consumption without reducing yield.