Abstract
Abstract The aim of this study was to eliminate Zn deficiency and increasing yield in Grapevine (Vitis vinifera L) cv, Askari، via trunk injection method. The experiment was carried out in the Cisakht region; in randomize complete blocks design with four treatments and four replications. Treatments included of Zinc trunk injection in concentration 0.15, 0.3 and 0.5% amount of 500 cc was injected to each vine and Control. Injections were applied in three stages including flowering, after fruit set and veraision. Different traits including yield, chlorophyll, Zn concentration in leaves, TSS %, TA, length, volume and weight of berry were measured. Results showed that trunk injection of zinc increased yield, Chlorophyll, length, volume and weight of berry when compared with untreated control. The TSS %, Zn concentration, TA and ratio of TSS/TA were not affected by trunk injection. However Zn was increased in leaves up to 16.7%. So, trunk injection method in order to correct zinc deficiency and increasing yield in Grapevine cv, Askari، is recommended. Key words: Grapevine, Askari Cultivar, Zn So4 Trunk injection, Yield, Chlorophyll
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