تاثير كم آبياري طي مراحل مختلف رشد چغندرقند بر عملكرد كمي و كيفي آن

The effect of deficit irrigation in different growth stages on quantity and quality on yield sugar beet and water use efficiency

This study was conducted to eva luate the impact of defi ci t irri gation and growth stage s on yield and yield components sugar beet and water use efficiency. A field experiment was conducted in shareko rd Agricultu ral Resea rch Station in two years crop ping seasons, using a randomized comple te block design with 3 replications. This study were ass igned to 5 Levels of defi cit Irrigation treatments, Eo(Full Irrigat ion), E1 (85%), E2 (70%) , E) (55%) and EJ (30%) of actual evapotranspiration plant sugar beet. and were assig ned to three grow th stages , T1 , T z and T). Resul ts of co mbined analysis of varia nce showed, biological yield, tuber yie ld, yield comp onents, water use efficiency and other traits in the grow th stages, were significantly affec ted by defic it irr igation treatment s. Res ults showed, susceptibility of develop mental stages of sugar beet to deficit Irrigation were different. Exposi ng to defici t irrigation in eac h developmental stages, Lead to dec rease in yield, Tz stage were the most critica l stages under water stress co nditions . Results showed treatment E, (70%) evapotranspi ration plant sugar beet was inc rease, yie ld components and water use efficiency. Results showed Water use dec reased compared to Ezby 30 all Stages inerease, yield components and water use effi ciency.