Yield and Yield Components of Grapevines as Influenced by Mixed Nano Chelated Fertilizer, Humic Acid and Chemical Fertilizers

Nutrient elements are the most important factor limiting crop production in plants. In addition to reducing the yield and quality of the product, the lack of mineral elements causes nutrient deficiency in humans. Based on this, in order to study the effect of humic acid and mixed nano chelated fertilizer together with chemical fertilizers on the growth and yield of Yaqouti grape, an experiment was conducted as a randomized complete block design with 3 replications in Kandoleh area of Sahneh city of Kermanshah province in two successive years 2020 and 2021. For this purpose, ten different fertilizer treatments were considered include; mixed nano chelated fertilizer + chemical fertilizer (T1), mixed nano chelated fertilizer + humic acid with irrigation (T2), mixed nano chelated fertilizer + humic acid (T3), humic acid with irrigation + chemical fertilizer (T4), humic acid + chemical fertilizer (T5), humic acid with irrigation (T6), humic acid (T7), mixed nano chelated fertilizer (T8), chemical fertilizer (T9), control without fertilizer (T10). Fertilizer treatments have a statistically significant effect (P≤0.05) on the traits of number of berries per bunch, number of bunches per plant, bunch weight, bunch length and width, yield per plant, yield per hectare, Total Soluble Solid (TSS), Titratable Acid (TA), TSS/TA and pH of juice. Using a combination of treatments was more beneficial than single treatments. The practical result of this research is the use of treatments T1 and T3 for gardeners, respectively. Qualitative properties such as total soluble solids and TSS/TA were higher in most combined treatments, especially in the treatment of mixed nano chelated fertilizer + chemical fertilizer (T1), which was at the top.