Vol. 12, Issue 11 (2023)

Author(s):
Tsering Lanzes, Kulapati Hipparagi, Basavaraj Padashetti, Sateesh Pattepur, Rupali Thakur and Shipra

Abstract:
An experiment entitled Influence of Ramphal (Annona reticulata L.) rootstock on custard apple (Annona squamosa L.) cvs. ‘Balanagar’ and ‘Arka Sahan' were carried out at sector 70, MHREC, University of Horticultural Sciences, Bagalkot (Karnataka) during the year 2020-21, with an objective to study the influence of Ramphal rootstock on the graft’s growth parameters and success of custard apple cultivars ‘Balanagar’ and ‘Arka Sahan’. The trial was set up in a Completely Randomized Design with eight treatments and three replications. The scion from the mother plants of both the cultivar were grafted onto a Ramphal rootstock. Softwood grafting was carried out from 15^th January to 28^th February at fortnight intervals and observations were taken at 30 days intervals. The result of the current investigation's findings revealed that, within the varying treatments, the highest count of sprouts per graft (3.10), length of the sprouted shoot (25.37 cm), girth of scion above union (7.97 cm), number of leaves (26.54), leaf area (30.66 cm²), length of longest root (34.73 cm) with highest graft success (95.55%) and graft survival (91.10%) at 90 DAG, was noted when grafting of ‘Arka Sahan’ was commenced on 15^th February (T₇). Whereas the lowest number of sprouts per grafts (2.20), length of sprouted shoot (15.70 cm), girth of the scion above union (5.88mm), number of leaves (15.31), leaf area (16.26 cm²), with minimal graft success (68.88%) and survivability (57.77%) were recorded in T₁ at 90 DAG respectively however, treatment T₇ is statistically on par with T₆ for most of the parameters studied. Therefore from the results, it can be inferred that, in the present investigation, softwood grafting of custard apple cv. ‘Arka Sahan’ performed on 15^th February exhibited the best results.