Did some granular work 2 years ago using Graslan (tebuthiuron) and I'm currently developing a larger multirotor to do similar work fully automated.
Hello, I have seen using multirotors to apply polen in Pears in my country, Chile, as a dry product, so I undertand it can be done.
What we have been doing is invasive woody weed control so not for deforestation. Many woody weeds such as Blackberry Lantana and Prickly Acacia have the ability to strangle local habitat to the environments detriment.
In Sudan they seem to be working on acacia seeding with fixed wing and seem to develop robotic arms to evaluate soil?or somekind.Although I personally think waterboxx groasis--(Dubai Desert--Prosopis cineraria-a success story)kind of plant boxes and maybe supporting them with NDVI scanning from above can be more energy efficient in working against desertification.Maybe this engineer is in diydrones group?..https://www.youtube.com/watch?v=FRpHVq3JHEc