Helen Atthowe considers economic benefits (profit!) in organic farming systems vs. permaculture farming systems (aka: conservation farming; agricultural ecology conservation farming).
Benefits include: less labor, less land, zero spraying for insects, less fertilizer, less weeding,
While organic farming focused more on managing crops, soil fertility, reduction of pests, and reduction of chemicals. A permaculture farm is more about managing natural inter-relationships with plants, insects and wildlife.
Relevant threads at permies:
music by Jimmy Pardo
podcast 398 – Review of Gracie’s Backyard – Part 2
podcast 397 – Review of Gracie’s Backyard – Part 1
298 – PermaEthos Part 2
Podcast 248 – Paul’s Farm
229 – Gourmet Restaurant Experience
222 – Polyculture Food, Land Search Update, and Cancer
221 – Paul Answers Permaculture Related Questions from Eivind Bjørkavåg
210 – Woodleaf Farm Orchards