The effect of forage removal height on assimilate redistribute in barley cultivars of dual-purpose

A trial study was set to investigate the effect of forage removal height on assimilateredistribute in barley cultivars of dual-purpose.A factorial experiment was assigned as a randomized completed block design with four replications in Hamidiye at southwestern Ahvazin 2011-2012. Forage treatments were included at height cutting at 5, 10, 15 centimeter stem cutting above the soil surface at the beginning of stem elongation at growth steps 30 and 31 of Zadux (5-6 fix) and no cutting (control) and three barley cultivars including Jenoob, 10 serasari (Zahak), and Nimrooz. The obtained results showed that by cutting more parts of the crop, remobilization, remobilization share, current photosynthesis, and grain yield decreased and the share of current photosynthesis and the yield of dry forage increased. The highest amounts of grain yield (3614.58 kgha-1), remobilization (86.84g/m2), remobilization share (24.42%), and current photosynthesis (274.61g/m2) belonged to the treatment with no cutting (control) and the highest yield of dry forage (3607.58 kgha-1) and current photosynthesis share (80.46%) belonged to the forage cutting height of 5 cm above the soil surface. Among the barley cultivars, 10 serasari (zahak) cultivar had the highest grain yield (3742.37 kgha-1), remobilization (72.51g/m2), current photosynthesis (302.97 g/m2), and current photosynthesis share (80.47%); however, the Jenoob cultivar had the highest yield of dry forage (2558/81 kgha-1), and remobilization share (24.49%). In general, 10 serasari (Zahak) cultivar, in the treatment of no cutting had the highest grain yield and Nimrooz cultivar at cutting height of 5 cm above the soil surface had the highest yield of dry forage.