Study the addition of biofertilizer , liquid organic fertilizer and foliar spraying of nano-liquid organic fertilizer on some chemical traits on grapevine " French black" cultivar

Abstract

The experiment was conducted on a French black grape cultivar in a private orchard in Babylon province/ Al-Hamzah Al-Gharbi district, and the experiment was conducted using the factorial design of the Randomized Complete Block Design (RCBD) with three replicates with three factors. The first factor is adding biofertilizer consisting of Bacillus megaterium and Mycorrhiza glomus fungus at two levels (0 and 10 ml L^-1) to the soil, and the second factor is adding liquid organic fertilizer at a concentration (0, 15 and 30 ml L^-1) to the soil, and the third factor is foliar spraying with nano organic fertilizer at a concentration of (0,1 and 3 ml L^-1) for both seasons (2020-2021). The experiment included (54) vines for the cultivar, and the averages were compared by testing the least significant difference (L.S.D) at the level of probability 0.05 (Al-Rawi and Khalaf Allah, 2000) and using the statistical program GenStat .The most important results that were reached were summarized as follows: While the results indicated that there was a significantly excelled with regard to biofertilization at a concentration of 10 ml L^-1 in most of the chemical indicators, where it led to an increase in the percentage of phosphorus in the leaves by 0.43 and 0.44%, the percentage of total soluble solids in the juice of the berry s, as it reached 15.19 and 14.46%, The percentage of total acidity in berry juice was 0.74 and 0.99%.The percentage of total soluble solids/total acidity amounted to 32.5 and 27.6%, the percentage of reducing sugars in berry  juice amounted to 8.02 and 7.24% for the two seasons, respectively,.The organic fertilizer at a concentration of 30 ml L^-1 had a significant effect on the trait of the phosphorus percentage in the leaves, 0.392  and 0.475 %, for both seasons, respectively. The percentage of total soluble solids/total acidity amounted to 37.6 and 30.3% for both seasons, respectively.