Dallisgrass needs 3 apps of MSMA 7 days apart, 1oz/1000 sq ft. Or, glyphosate - I would recommend a late fall app (spot spray) as or after the If it's all crabgrass and dallisgrass, which it looks like I would glyosphate it. Then plug it. Killing two birds with one stone is the name of
Massive Dallisgrass Roots Controlling dallisgrass with herbicides often requires multiple applications over several seasons. 1. Page 2. Selective Control in Warm-Season Turfgrass. Kill Crabgrass, Dallisgrass, Clover in 5 Easy Steps. Oxalis, morning glory and Crabgrass Killer.
...