Circular Agricultural Systems is indexed and archived in:
AGRIS - International System for Agricultural Science and Technology
Baidu Scholar
Center for Agriculture and Bioscience International (CABI) 
China Science and Technology Journal Database
Dimensions
Directory of Open Access Journals (DOAJ)
FSTA (Food Science and Technology Abstracts)
Google Scholar
J-Gate
OpenAIRE
Portico

Circular Agricultural Systems is currently in the process of applying to additional major abstracting and indexing databases. 

For authors funded by the National Institutes of Health (NIH) or other funding agencies that require their research results to be made publicly available in a designated repository such as PubMed Central (PMC), authors may deposit the final published version of the work themselves to PMC/UKPMC for immediate release (see https://publicaccess.nih.gov/Methods-C-D-BP).