The ideal destination for those wanting to work abroad on farms is Uruguay. Many permaculture institutes accept work in exchange for accommodation and for a few hours of work per day, your lodging is guaranteed in addition to learning a lot of new things. To be an environmental volunteer, just choose your project, apply for the open spot, and, if approved, arrange the details of stay with the host.
In Uruguay, agriculture is one of the pillars of the economy with strong production in cereals, corn, wheat and wool, and all are very committed to sustainability. The ecological farms and eco-villas are mainly in the interior regions of the country and because of this they are a little distance from the main tourist attractions on the coast, making the trip more calm and with lots of contact with the local population.