The effects of different supplemental irrigation method on reproductive characteristics and water productivity of rain fed fig

Due to successive droughts and as a result of quantitative and qualitative reduction of water resources in Fars province, changing the cultivation pattern from High-water crops to low-water crops and the development of rain fed orchards has become inevitable. As in many cities of the province such as Fasa, Jahrom, Khafr and Kharameh, cultivation of green fig trees in addition to Estahban city is developing. This study was conducted to investigate the effect of supplementary irrigation on reproductive characteristics of fig crop in Kharameh city during the years 2016-2017 and 2017-2018 by using completely randomize block with 4 treatments of irrigation method and in 5 replications. The treatments included the1500 liter supplemental irrigation in March, May, August by flooding method (T1), subsurface drip irrigation method (T2), microjet irrigation method (T3) and control treatment (no supplemental irrigation) (T4). The results showed that the number of bright yellow fruits increased by 247% in the micro jet treatment compared to the control. The number of AA grade and hundred -one fruits, which are the best quality fruits in figs, were significantly higher in micro jet irrigation method than other irrigation methods. Also, The weight of bright yellow and AA fruits was highest in micro jet irrigated trees and the difference with other treatments and control treatment was significant. The physical productivity index of water in flood and micro jet treatments in the initial year of the project was 0.11 kg / m3, which was the highest value among the treatments.