Robots are already helping farmers on every day tasks. Take Oz for instance: it is an autonomous weeding robot that can take care of weeds and hoes your crop. It has a lightweight design to avoid compacting your soil. Oz helps farmers during harvest while avoiding exposure to toxic weed killers.
Oz has a follow mode, in which it can transport loads for you. In autonomous mode, it follows the crop rows and automatically guides itself. You can tell Oz where to go wirelessly.