Effect of pre-soaking treatments on the success of softwood grafting and growth of mango grafts.
Yelleshkumar H. S., Swamy G. S. K., Patil C. P., Kanamadi V. C., Prasad Kumar
Author Affiliation: Department of Fruit Science, K. R. C. College of Horticulture, Arabhavi, India.
Karnataka Journal of Agricultural Sciences 21 : 471-472
Abstract : A study was conducted in Arabhavi, Karnataka, India, during 2006-07, involving 8 treatments, i.e. control, water soaking (12 h), KNO3 at 1% (10 min), GA3 at 100 ppm (10 min), cow dung (12 h), cow urine (12 h), Amrit pani (3% for 3 h) and panchagavya (3% for 3 h). The scions from 20-year-old grafted mango cv. Alphanso established in the Agriculture Research Station were used. Observations were recorded at 3 months after grafting for graft success and graft survival percentage and monthly interval for graft growth parameters. There were significant differences among the different bio-organics and chemical treatments. The maximum graft success was noticed in panchagavya (76.15%), followed by water soaking and GA3 (74.17 and 73.73%, respectively). Significantly the least graft success was noticed in the control (64.07%). A similar trend was observed for graft survival. The pre-soaking treatments were significant at all the stages of growth with respect of sprout height, graft diameter, number of sprouts and number of leaves. Panchagavya resulted in the maximum sprout height (5.96 cm), followed by KNO3 (2.642-5.64 cm) compared to the control (2.11-4.28 cm). The greatest graft diameter was recorded in panchagavya (7.28-8.40 mm) at 30-120 days after germination (DAG), followed by GA3 (7.23-8.39 mm). The least graft diameter was recorded in the control (6.5-7.51 mm). At 90 and 120 DAG, the highest number of sprouts was observed with GA3, panchagavya and KNO3 (2.38, 2.23 and 2.26, respectively). Panchagavya recorded the highest number of leaves (17.80), followed by KNO3 (8.25-15.71). The osmo-priming treatments with bio-organics increased the graft success, survivability and graft growth parameters.