I'm just a beginner here, my agroforest yields nothing, I started just a few months ago. Anyway, from what I hear from people more experienced than me is quite the opposite, it yields much more, sure you would get less tomatos per hectare but you would get a lot of other products too. I'm very curious where can I find evidences agroforests couldn't feed the world? Or evidences it yields less then current farming methods?

Edit: a good view on the agroforests they're doing here https://vimeo.com/136423275 it is subtitled, this one is a good example of how a agroforest can recover destructed lands.