Some farmers use to do foliar applications of sucrese (sugar) and molasses in plants addressing improvements in plant health and increasing yield. Does it make sense physiologically?
Yes, it does make sense. There are instances where it was used for improving the germination of seedlings and the yield of tomato.
You can refer to this paper: Application of sucrose on tomato seedlings improves transplant quality, crop establishment, cold and dark hardiness. By Jamal and Shandiz, 2013.