glyphosate

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Chemical Renovation of Turfgrass

Old turf areas eventually become invaded and often dominated by naturalized grasses including bentgrasses, roughstalk bluegrass, annual bluegrass, velvetgrass, tall fescue, quackgrass, and bermudagrass. Turf managers who desire pure stands of turf will need to renovate periodically by killing existing vegetation and then reseeding.

Most attempts at chemical renovation fail outright or provide only short-term control of weedy grasses. For good results, turf managers must completely kill weeds and prevent reinfestation from seed. To optimize kill of weedy grasses, leave the target turf unmowed for several weeks as it grows vigorously. In spring, the best time for spraying cool-season grasses is at early flowering. This maximizes kill of difficult grasses such as velvetgrass, bentgrass, and tall fescue. In fall, spray turf when new growth is at least 3 inches tall. Summer sprays often are ineffective due to poor translocation to crowns and rhizomes. Remember that good foliar kill does not always mean complete plant kill.

On renovation sites replanted with straight perennial ryegrass, a selective preemergent herbicide containing ethofumesate can be applied to control germinating annual bluegrass. Applied properly, ethofumesate gives 90 to 100 percent control of germinating annual bluegrass with no harmful effects on the developing ryegrass turf.

OUR COMMERCIAL glyphosate will kill all common weedy grasses and many broadleaf weeds. Best results on grasses are when turf is allowed to grow at least 3 inches tall or to flower. For maximum kill, delay replanting to see whether regrowth is from crowns or rhizomes. Bermudagrass kill is better with summer or early fall sprays. Our formulation of glyphosate for use in industrial (non-ag) markets. It has a new formulation of systemics with a Category IV acute toxicity rating and "Caution" signal word which constitutes for safe handling. Add our rain protector surfactant for faster activity. this will make it Rainfast in 1 to 2 hours. Effects on weedy grasses are visible within 2 to 4 days, but on most perennial weeds may not be visible for 7 days or more. This product's active ingredient inhibits an enzyme found only in plants and microorganisms that is essential for formation of specific amino acids. Our non-selective is a water-soluble super concentrate that will make 8 gallons of solution per unit, mixed at the 2 oz of concentrate per gallon of water rate. Mixing with a straight pre-emergent will stop all seed germination activity to give you longer spans in between post sprays, we suggest the product SURFLAN as the compatible partner.

Caution Avoid tilling or slice-seeding sprayed areas for at least 7 days to ensure adequate translocation to crowns, rhizomes, and roots. Use caution in spraying turf near ornamentals, which may be injured or killed by drift or direct spray contact. See label for site application for each product.