Effect of growth regulators and organic substances on rooting of grapes (vitis vinifera l.) cv.muscat

An experiment was conducted in the Department of Horticulture, Faculty of Agriculture, Annamalai University, Tamilnadu during 2017-2018 to study the “Effect of growth regulators and organic substances on rooting of grapes (Vitis vinifera L.) cv.Muscat. Experiment was conducted in Randomized Block Design under shade house condition with ten treatments and three replication for grapes cuttings cv.Muscat. The treatments were three different concentrations of IBA @ 2000 ppm, IBA @ 3000 ppm and IBA @ 4000 ppm and (organic substances) Seaweed extract @1%, seaweed extract @ 2%, seaweed extract @ 3% and Humic acid @ 1%, Humic acid @ 2% and Humic acid @ 3%. The various growth parameters viz., Days required for bud sprouting, length of root (cm), number of roots per cuttings, fresh weight of roots (g), percentage of rooting, length and width of leaf (cm), number of leaves per shoot, fresh weight of leaves (g), leaf area index (cm2),length of shoot (cm),diameter of shoot (cm), length of internodes (cm) and percentage survival of cuttings were observed, growth regulators and organic substances gives better result in effect on rooting of grapes. percentage survival of cuttings, length of root, number of roots per cuttings, length of shoot (cm), shoot diameter (cm), rooting percentage, fresh weight of root (g) increased in IBA @ 3000 ppm followed by IBA @ 2000 ppm and Humic acid 2%. The rooting was earliest in IBA @ 3000 ppm, and also the days required for bud sprouting was earlier in cuttings treated with IBA @ 3000 ppm, followed by IBA @ 2000 ppm and Humic acid 2%.