Holistic Management: Claims are not supported but are there social lessons to be learnt?
The Savory Institute claims that Holistic Management (HM) increases production of plants and grazing animals while also increasing soil organic carbon under all conditions in all habitats. Claims have been heavily marketed and popularized in the media including via the now-famous TEDTalk. However, peer-review literature, including our meta-analysis, and a recent review focussed on farm-scale studies, do not support these claims. In this talk we will present this evidence, while addressing some of the criticisms levelled against scientific studies by HM supporters. Finally, we will discuss the social dynamics within HM communities and what lessons these might provide.

Supporters of HM criticize small-scale studies (less than 2 ha), reasonably proposing that production and climate benefits only emerge on large working farms (2-66 ha or larger, our size definitions). In response, we reviewed 22 farm-scale studies from across the globe, and the few social and soil carbon studies available. The review supported the findings of previous meta-analyses, i.e., HM’s intensive grazing approach either has no effect or reduces production, thus negating the claim by HM proponents that there is a difference between ‘the science and the practice’. Seven peer-reviewed studies show that the potential for increased carbon sequestration with changed grazing management is substantially less (0.13-0.32) than the 2.5-9 t C ha-1 yr-1 estimated by non-peer-review HM literature. Interestingly, five studies show that HM provides a social support framework for land users. The social cohesion, learning and networking so prevalent on HM farms could be adopted by any farming community without accepting the unfounded HM rhetoric, and governments could allocate funds to train extension agents accordingly. A future focus on collaborative adaptive farm management and other innovations will be more helpful than any further debate about grazing density.
Date: 8 September 2023, 16:15 (Friday, 20th week, Trinity 2023)
Venue: Dyson Perrins Building, off South Parks Road OX1 3QY
Venue Details: Main lecture theatre
Speaker: Heidi Hawkins
Organising department: School of Geography and the Environment
Organisers: Carlyn Samuel (University of Oxford), Jane Applegarth (University of Oxford, Oxford University Centre for the Environment)
Part of: Leverhulme Centre for Nature Recovery and the Biodiversity Network seminar series
Booking required?: Required
Booking url: https://bookwhen.com/oxfordbiodiversitynetwork/e/ev-s737-20230908161500
Audience: Public
Editor: Carlyn Samuel