2021 On-Farm Cotton Variety Trial Results Jan 14, 2022 | Written by Jennifer Here are the 2021 Cotton Variety Trial Results. The top 2 yielding varieties in Jeff Davis County were; DG 3615 B3XF and DG 3799 B3XF. If the pictures are blurry you can view by clicking here: 2021-Variety-Trial-Results-FINALDownload