Effects of Fosnotren, Fulvic Acid and Brassinolide on Quantitative and Qualitative Traits of Grape Vine cv.  Khalili'

An experiment was conducted to survey the effects of fosnotren amino acid, fulvic acid and brassinolide on the yield and fruit quality of rain-fed grapevine (Vitis vinifera L. cv. „Khalili‟) in Bavanat and Shiraz (Akbar-Abad) regions. The lay out was a randomized complete block design (RCBD) in two years with three replications and five vines per each plot. Treatments consisted of control, foliar applications of fulvic acid (3%), fosnotren amino acid (2.5 mg l-1), brassinolide (0.4 mg l-1), fulvic acid (3%) + fosnotren amino acid (2.5 mg l-1) + brassinolide (0.4 mg l-1) in three different times before and after flowering, and in the early stage of berry development, and soil application of brassinolide (0.2 mg l-1, 5 liter vine-1) in before bud break. The results showed that chemicals reduced bloom drops and increased flower intensity, fruit set, fruit size, sugar, total soluble solid and improved fruit quality and fruit color, and includes synchronise ripening of berrys. The highest fruit yield obtained from combination of foliar application of the compounds with 194.3% yield increase in comparison with control. Foliar applications of fosnotren amino acid and fulvic acid increased fruit yield by 66.4 and 44.9 in comparison with control, respectively. However, based on the results, foliar application of the 3 compounds in all stages is recommended.