Review response of grape to omit irrigation in various growth stages
2007
Razavi, Roghie | Keykhaei, Fatemeh | Majidi, Aziz | Mokhtari, Daryoosh
In order to determine water used of grape based on class A pan evaporation coefficient and effect of irrigation omit at different growth stages an investigation carried out .This experiment was factorial with randomized complete block design in three replication The treatments were as follow: t1_ Irrigation at all growth stages t2_ Irrigation begin from berry set stage and irrigated to end of growth stage. t3_ Irrigation begin from starting the growth until the end of veraison and cut irrigation in this period I1_ Irrigation 50% evaporation of class A pan I2_ Irrigation 80% evaporation of class A pan The results indicated that to obtain maximum yield per unit of land t1I2 treatment is recommendable. In this treatment, the average yield was 33.4 Tons/ha , with crop water requirements of 450-500 mm . Increase in the content of sugar was observed with t2I1 treatment. .Main effect of irrigation time on yield production was significant at 1% and main effect of irrigation amount in yield production was significant at 5%. To obtain maximum yield per unit of water use t3 I1 treatment is recommendable with crop water requirements of 200-300 mm. In this treatment, the average water use efficiency (WUE) was 13.9 Kg/m3.
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