About

From About page:

The Agricultural Research Service (ARS) is the U.S. Department of Agriculture's chief scientific research agency. Our job is finding solutions to agricultural problems that affect Americans every day, from field to table.

From Datasets page:

This page provides links to collections of data that — are accessible or searchable online or can be downloaded, and are maintained by the Agricultural Research Service or by ARS in cooperation with other organizations.

Openness

Not explicit US Government and should be in the public domain.