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Freeze Injure and Antioxidant Enzyme Activity of Grapevine (Vitis Vinifera) Under Bio-Boron Fertilizer Applications

Köse, Cafer, Güneş, Adem, Kaya, Özkan, Kıtır, Nurgül, Turan, Metin, Şahin, Fikrettin
Erwerbsobstbau 2018 v.60 no.Supplement 1 pp. 3-10
Vitis vinifera, antioxidants, boron, boron fertilizers, catalase, cultivars, enzyme activity, fertilizer application, foliar application, fruit yield, grapes, leaves, models, peroxidase, plant growth-promoting rhizobacteria, soil, superoxide dismutase, temperature
This study was conducted to determine the effects of plant growth promoting bacteria (PGPR) and boron (Bio-B) on the plant freeze injury, antioxidant enzyme activity and fruit yield of grapevine cultivar. The experimental plot was a completely randomized design with 5 replicates. As a trial model Bio-B and control were used as fertilizer agent. Bio-B fertilizer has been applied in different ways as soil + foliar, soil and foliar application methods to grapevine plants. Data through 2 years trials results showed that the use of Bio-B significantly decreased freeze injury and increased antioxidant enzyme activity of grapevine leaf. The highest damage rate at control group occurred with −20 °C and 94.89% ratio. In the same temperature degree at grape plant, the damage ratio of the Bio-B application from soil decreased by 21.55%; the application from leaf by 25.53% and with the application from soil + leaf by 26.24%. In addition to this, compared with control, in the CAT, POD and SOD enzyme activities increases occurred with the ratios as 28.57%, 22.05% and 39.25%, respectively. Generally, as results of this study under field conditions, Bio-B fertilizer application decreased freeze injure and increased antioxidant enzyme activity of the grapevine plant.