turfgrass, Digitaria spp., crabgrass control, prodiamine, dithiopyr, pre-emergent herbicide, spring tall fescue, Lolium arundinacea
With less crabgrass pressure, the Kansas site showed an inhibitory effect of pre-emergent herbicides on spring tall fescue (Lolium arundinaceum) seeding and establishment. However, at the Nebraska site, greater crabgrass pressure showed a benefit of pre-emergent herbicide use in new spring seeding of tall fescue.
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Hoyle, J. and Reeves, J.
"Crabgrass Control in Spring Seeding Using Early and Late Combinations of Prodiamine and Dithiopyr,"
Kansas Agricultural Experiment Station Research Reports: