It been a long time since I last posted on OwnedCore or played WoW, but I just renewed my subscription and I'm looking to contribute
The following is a guide on how to get as much rep as you want with The Tillers, it's based a little around luck and is by no means faster than dailies, but it can be done as much as you want every day.
When planting crops on Sunsong Ranch, one of the possible outcomes is a 'Bursting' version of that crop. This is possible with any of the fruit and vegetables but I'd also assume it's also possible with the enchanting/tailoring/mote plants etc (Although untested, haven't had the time). When a Bursting crop grows, it looks like a pulsing, large version of that crop and can be instantly harvested for full item/rep gains. As far as I'm aware there is no limit to how many times this can happen, so the process is as follows:
Firstly, buy alot of any seed of your choice (Unconfirmed with the non-plant seeds)
Secondly, plant all those seeds in Sunsong Ranch
Then if they return a Bursting Crop, harvest and replant
Finally, if they return anything other than a Bursting Crop (e.g a parched or infested juicycrunch carrot), care for them, dig them up and replant