L.N. BairwaDengri, Dollshree2024-04-262024-04-262022https://krishikosh.egranth.ac.in/handle/1/5810208409An experiment entitled “Effect of Plant Growth Regulator and Growing Media on Growth of Root and Shoot in Dragon fruit [Hylocereus undatus L.]” conducted during August – November 2021 in shade net house of Horticulture farm, S.K.N. College of Agriculture, Jobner- Jaipur (Rajasthan). The experiment was laid out in Factorial CRD and replicated three times with 16 treatment combinations including four plant growth regulator (IBA) concentrations (control, 2000, 4000 and 6000 ppm) and four growing media (control, sand : cocopeat, sand : vermicompost and sand : vermicompost : cocopeat). The result revealed that the dragon fruit cuttings treated with IBA at 6000 ppm performed superior in all the parameters viz., least number of days taken for root initiation (15.06 days), maximum percentage of rooted cuttings (85.88%), length of longest root (20.60 cm), average length of roots per cutting (13.52 cm), average number of roots per cutting (22.15), diameter of root (1.38 mm), least days taken for sprouting (25.03 days), percentage sprouting (59.98%), sprouts per cutting (2.35), shoot length per cutting (14.80 cm) and diameter of shoot (36.99 mm) at 75 days of planting, where IBA at 4000 ppm was reported at par with 6000 ppm of IBA. Similarly, sand : vermicompost: cocopeat (1 : 1: 1) growing media showed significantly higher results for all parameters viz., least number of days taken for root initiation (15.04 days), maximum percentage of rooted cuttings (85.81%), length of longest root (20.05 cm), average length of roots per cutting (13.28 cm), average number of roots per cutting (22.16), diameter of root (1.35 mm), least days taken for sprouting (25.01 days), percentage sprouting (59.53%), sprouts per cutting (2.35), shoot length per cutting (14.80 cm), diameter of shoot (36.47 mm) at 75 days of planting. Dragon fruit stem cuttings treated with 6000 ppm of IBA and grown in sand: vermicompost: cocopeat (1 : 1 : 1) media proved significantly superior combined treatment in maximum average root (17.14 cm) and shoot (18.64 cm) length. The maximum net return (₹ 854.94 per bed) and B:C ratio (2.21) was recorded under treatment combination G2M2 (IBA at 4000 ppm + sand : vermicompost) which was found to be significantly superior over the rest of the treatment combinations.EnglishThesis