Cover Crop

The link between regen ag, cover crops and sustainability

The Australian cotton industry isn’t alone in its interest in regenerative agriculture. It was the focus of a keynote address by CRDC Executive Director Allan Williams at last year’s International Cotton Advisory Committee conference in India.  

As the chair of SEEP (ICAC’s Expert Panel on the Social, Environmental and Economic Performance of cotton production), Allan presented the findings of an international review, commissioned by SEEP to review the types of practices being promoted as regenerative, with a view to assessing the feasibility of implementing them across a range of different farming systems.  

Allan described regenerative agriculture as ‘the new black’ when it comes to defining sustainability, especially among retailers and brands looking to demonstrate sustainable sourcing credentials.  

“The challenge is that there are multiple definitions, and while some include specific practices, many of the definitions focus on high level principles and outcomes,” Allan said.  

“For example, the United Nation’s Food and Agriculture Organisation definition is: ‘regenerative agriculture describes holistic farming systems that, among other benefits, improve water and air quality, enhance ecosystem biodiversity, produce nutrient-dense food, and store carbon to help mitigate the effects of climate change’. 

“While no-one is going question the importance of achieving those outcomes, farmers ultimately need to adopt farming practices, not principles.” 

The SEEP review found that cover crops and tillage (reduced, minimum, no-till or zero-till) are the most frequent practices referenced in regenerative frameworks/standards. The next most referenced practices are crop rotation, livestock grazing and reducing synthetic pesticides and fertilisers. 

Dr Tom O’Donoghue, who undertook the review of regenerative agriculture definitions in 2015, is currently conducting CRDC-supported research into cover cropping in cotton systems. This important work will quantify the impacts growers are seeing with cover crops. Increased use of cover crops could be beneficial for the industry to show evidence of regenerative agriculture, as well as potentially benefitting growers by reducing input costs. 

 

For more 

Dr Thomas O’Donoghue 

t.odonoghue@sydney.edu.au