abstract
When the scion is transplanted to the rootstock, the scion remains hydrated until the graft callus is important. For home or small-scale orchard owners, it is common practice to use sealants on all grafts to increase the chances of graft success. However, the cost and time of using graft sealants should not be overlooked. In this study, we evaluated the success rate of apple and pear trees transplanted with a vinyl tape-fixed gantry with and without commercial graft sealants.
method
During the spring of 2012, four experienced ammunition, each grafting at least hundreds of grafts, were grafted with 2,400 apples and pear whip. Use a whip and tongue, side whip and tongue and crack graft to construct the whip. In addition, Omega and Topgrafter mechanical grafting tools were used. Secure all scions to the rootstock using black vinyl [electrical] tape. The tape covering each of the grafts was then coated with a Doc Farwell graft seal or left unpainted. For all grafts, the same graft sealant was applied to the cutting tip of the scion to prevent drying. Then place the whip directly in the orchard or nursery line. After that, there was no isolation of the sealed and unsealed grafted trees. Therefore, there is no difference in any group of tree care and maintenance during the subsequent growing season.
result
Total number of transplants: 2425
Total sealant: 2163
Tape only: 262
Sealant Success: 1982
Sealant unsuccessful: 181
Tape only succeeded: 231
Tape only failed: 31
Sealant adoption rate: 91.6%
Tape occupancy rate: 88.2%
discuss
In order for the graft to be successful, at least one of the forming cells from the scion and a forming cell from the rootstock must be in contact for a sufficient period of time to heal the wound produced during the transplant. This creates a continuous vascular access from the tip of the growing scion to the deepest robot for exchanging water and nutrients.
In more than 2,400 grafts, the difference in success rate between grafts using only adhesive tape and graft sealant was negligible. This indicates that the painted graft fixed with vinyl tape does not need to keep the scion in good condition until the graft heals.
Since this is not a design study, different approaches may be taken to enhance the results. The number of graft-only grafts in this study was relatively small compared to the total number of grafts using the sealant. If we repeat this study again, we will use the same number in each group. We also group sealed and unsealed whip depending on the type of graft used and possibly even the grafter.
Although the success rate of using only tape is lower than that of tape and sealant, if the number of whip between the two groups is equal, the difference in success rate may be smaller. Thus, when vinyl tape is used to secure a new graft, the use of a graft sealant on top of the tape will not increase the overall graft success rate on a medium to large scale.
Orignal From: Retrospective study on the necessity of grafting sealant
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