Rangeland Ecology & Management

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What We Talk About When We Talk About Soil Health
Author
Stewart, Ryan D.
Jian, Jinshi
Gyawali, Ayush J.
Thomason, Wade E.
Badgley, Brian D.
Reiter, Mark S.
Strickland, Michael S.
Publisher
Agricultural and Environmental Letters
Publication Year
2018
Body

Despite a nationwide emphasis on improving soil health in the United States, current measurement protocols have little consistency. To survey assessment practices, we conducted a meta-analysis of cover crop (n = 86) and no-tillage (n = 106) studies and compiled reported indicators, cropping systems, and soil sampling protocols from each. We then analyzed which indicators significantly responded to cover crop usage after 1 yr and 2 to 3 yr. Our results showed that out of 42 indicators, only 8 were reported in >20% of studies. Thirteen indicators showed >10% relative response after 1 to 3 yr; the remainder lacked either sufficient observations or consistent results. Looking forward, we propose that emphasis should be placed on (i) pursuing dynamic indicators (e.g., aggregate stability), (ii) standardizing sampling protocols, and (iii) developing a common framework for information sharing. These efforts will generate new insight into soil health across systems, ultimately ensuring that soil health science is useful to producers and regulators.

Language
English
Resource Type
Text
Document Type
Technical Report
Additional Information
Agricultural & Environmental Letters
Research Letter
Published November 1, 2018
Pages 1-5
Collection
Keywords
soil
soil health
indicators
aggregate stability
protocols
sampling
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