19 January 2021
Intercropping for sustainability

Two-day Conference with AAB, DIVERSify and ReMIX at Reading University

6 September 2021
Organic World Congress 2021

New date! Postponed from September 2020



12 August 2020
New US study on glyphosate and organic diets

Glyphosate levels in children and adults drop dramatically after one week of eating organic

30 July 2020
ORC welcomes the National Food Strategy

The first major reviewof our food system in 75 years



29 April 2020
Tim Bennett is the new Chair of ORC

Former NFU president takes on chairmanship of Organic Research Centre

The energy efficiency of organic agriculture

Category: News
13 August 2014

Review paper published online

An ORC-led review of about 50 studies has confirmed that most organic crop and livestock systems are more energy-efficient than their conventional counterparts. The difference is greatest when comparisons are made on a unit of area basis, although substantial increases in energy efficiency can also be observed per unit of product within most of the comparative studies reviewed. The difference between organic and conventional production tends to be greatest for grassland systems, due to the relative efficiency of producing grass in conjunction with clover. There are some important exceptions where organic performs worse. For example, potatoes where a lower yield reduces efficiency and other vegetables that require flame weeding. Within livestock production, organic pig and poultry production systems also perform worse where poor feed conversion and higher mortality rates can lead to lower energy efficiency overall. Despite this it is possible to state that most organically managed cropping and grazing-livestock systems will require less energy than conventional systems, on a unit area or weight of product basis. This is largely due to the absence of manufactured mineral nitrogen fertiliser and a lower levels of imported feed. For more information or to download a copy of the paper please go to the following link (subscription required to access full paper): http://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=9156585

This review paper forms part of a part-time PhD exploring the effects of a 100% conversion to organic farming in England and Wales. ORC gratefully acknowledge the support of the Ratcliff Foundation for this research.

Keywords: energy efficiency

Return to Archive