Though it's a time to look for ways to cut production costs, the use of low-test-weight seed oats isn't one of the answers. Experiments indicate that using low-test-weight seed reduces germination percentages.
Frey, K. J. and Wiggans, S. C.
"How Do Test Weights Affect Oat Yields?,"
Iowa Farm Science: Vol. 10
, Article 4.
Available at: https://lib.dr.iastate.edu/farmscience/vol10/iss9/4