Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Summer annual weed control in turfgrass.

Abstract

Summarized information is given on herbicide evaluations carried out in 1986-1988 in Georgia, USA. Oxadiazon w.p. at 1 and 3 lb/acre controlled Digitaria spp. and Eleusine indica as well as or better than oxadiazon granules. Dithiopyr controlled Digitaria spp. and E. indica, but the e.c. required a higher rate than the granular formulation and severely injured centipedegrass (Eremochloa ophiuroides) at 1.5 lb/ha. BAS 514 (quinclorac) controlled Digitaria spp. but not E. indica. Centipedegrass was injured more by BAS 514 than was Tifway bermudagrass (Cynodon transvaalensis Ă— C. dactylon). Pendimethalin on a fertilizer carrier controlled a higher percentage of Digitaria spp. and E. indica than when it was applied as a sprayable formulation. A single application of benfluralin + oryzalin each at 1.5 lb/acre and prodiamine at 0.75 lb/acre controlled Digitaria spp. and E. indica as effectively as did multiple applications. A single treatment of isoxaben at 0.75 lb/acre and benfluralin at 1.3 lb + trifluralin at 0.7 lb/acre controlled Digitaria spp. as effectively as did multiple applications, but neither controlled E. indica. Two applications of oryzalin or oxadiazon + benfluralin controlled Digitaria spp. and E. indica better than did a single application. Pendimethalin applied as a sprayable formulation was the only herbicide tested to completely control Polygonum aviculare.