Sometimes (many times) following social media (SM) threads can lead down some interesting rabbit holes. With a lot of news, research, and programming these days focusing on soil health and ‘regenerative agriculture’ (which focuses on soil health impacts on climate – read more here and here), the following article from Washington State University’s Center for Sustaining Agriculture and Natural Resources (CSANR) caught my eye when it popped up in my Twitter feed. In this post, Irrigated Cropping Systems Agronomist Andrew McGuire reviews the scientific literature for the latest (although the post is actually 3 years old now) analyses of impacts of pesticides, especially herbicides compared to tillage, and fertilizers on microbiological activity, organic matter, and soil structure, i.e. soil health. It may be surprising to find the science doesn’t support the ‘chemicals kill the soil’ narrative being portrayed these days.
Comparing effects of herbicides, fertilizers, and tillage on the soil
More than 35 specialists from around the Northeast and Mid-Atlantic contributed their expertise to develop the tool. The project was spearheaded by the Northeast Cover Crops Council, a group of farmers, researchers, Extension educators and personnel from nonprofits and industry that encourages the adoption of cover crops by fostering the exchange of information, inspiration and outcome-based research. The Council was formed with support from a Northeast SARE Professional Development Program grant. Through this and other USDA funding, the project team collaborated with USDA’s Agricultural Research Service (ARS) and Natural Resources Conservation Service (NRCS), Agricultural Informatics Lab and Precision Sustainable Agriculture to design the tool.
