Vol. 11, Issue 8 (2022)

The experiment entitled “Success of guava (Psidium guajava L.) Grafts affected by rootstock height and scion stick length” at Fruit Research Station, Lalbaug, Junagadh Agricultural University, Junagadh during March-2021 to July-2021. The experiment was laid out in Completely Randomized Design with factorial concept comprised of twenty treatment combinations and three repetitions. The first factor involves grafting height (15, 20, 25 and 30 cm) and second factor involves scion stick length (05, 7.5. 10, 12.5 and 15 cm) to study the effect of effect of rootstock height and scion stick length on success, growth and survival in guava grafts.

Maximum number of successful grafts (5.00, 5.80, 6.73 and 6.68), success rate (50.00, 58.00, 67.33 and 66.82%), minimum number of failure grafts (1.20, 2.21, 2.81 and 3.32) and mortality rate (12.03, 22.12, 28.09 and 33.18%) at 30, 60, 90 and 120 days interval, respectively, and survival percentage (66.82%) at 120 DAG were noted in H4 (30 cm rootstock height).The result on the effect of scion stick length: maximum number of successful grafts (4.33, 5.58, 6.25 and 6.17), success rate (43.33, 55.83, 62.50 and 61.70%), minimum number of failure grafts (1.37, 2.46, 3.08 and 3.83) and least mortality rate (13.70, 24.68, 30.87 and 38.31%) at 30, 60, 90 and 120 days interval, respectively and maximum survival percentage (61.70%) at 120 DAG were noted in L₃ (10 cm scion stick length).

Better results for success and survival percentage were found in the grafts prepared on 30 cm height of rootstock. As far as scion stick length is concern better results were recorded in the grafts prepared using 10 cm scion stick length for success and survival. Hence, for getting more success with least mortality and the highest survival percentage, the wedge grafts should be prepared during the last week of March to the first week of April using 30 cm rootstock height and 10 cm scion stick length in guava.