Response of three American grape cultivars (Vitis vinifera L.) to EM Bokashi and foliar spraying with some plant extracts

Abstract

The experiment was conducted in lathhouse of one of the private farms near the Technical College / AlMusayib for the period from September 2022 to July 2023. To study the effect of EM Bokashi and foliar spraying with some plant extracts on three cultivars of American grapes, the experiment included three factors, as the first factor included three cultivars of grapes They are (Summer Royal Seedless, Flame Seedless, Crimson Seedless( As for the second factor, it included the addition of EM Bokashi in two levels (without adding, adding 250 g. seedlings^-1), while the third factor included foliar spraying with plant extracts in four levels, namely (without spraying, the aqueous extract of licorice root powder at a rate of 15 ml L^-1, the aqueous extract of leaves Kumquat petals  at a concentration of 15 ml L^-1 and Moringa Leaves Extract  15 ml L^-1( The research was conducted as a factorial experiment (3 * 2 * 4) with a complete randomized block design (RCBD) and with three replicates, as each replicate includes 96 seedlings, 3 seedlings for each experimental unit.The results were as follows. The treatment of triple interaction between the cultivar Summer Royal Seedless and the ground addition of EM Bokashi at a rate of 250 g.Seedling^-1 interfering with the foliar spraying of the Moringa Leaves Extract  at a concentration of 15 ml L^-1 (C1B1E2)) gave a significant increase in the rate of seedling height, number of leaves relative chlorophyll in leaves and the content of the leaves of nitrogen, phosphorus and potassium compared to the treatment of the cultivar Crimson and the absence of the addition of EM Bokashi and the absence of foliar spraying (C3B0E0), which recorded the lowest average of the studied traits.