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Japanese Stiltgrass

Description

Japanese stiltgrass is a summer annual grass that generally grows 1-3 feet in a branching, sprawling, mat-like manner. Its pale green leaves alternate along a branched stalk, and it resembles a small bamboo plant. Leaves are narrow and lightly hairy. One feature to notice is the pale stripe of hair along the midrib of the upper leaf surface. Japanese stiltgrass spreads rapidly, and out-competes native vegetation in areas of low light.

Cultural Control

Maintain a dense, actively growing turf through proper mowing, fertilizing, and watering practices. Mow at the proper height for your selected adapted turfgrass. Coring and traffic control reduce compaction and encourage desirable turfgrass competition. It is best to control this summer annual broadleaf weed in late spring or early summer because it is easier to control at this time and the turf will have a greater chance of recovering the areas previously occupied by weeds.

Chemical Control

Herbicide and Formulation
Amount of Formulation per 1,000 sq ft
Amount of Formulation per Acre
Pounds Active Ingredient per Acre

Postemergence Control

Herbicide and Formulation

topramezone, MOA 27 (Pylex) 2.8 L

Amount of Formulation per 1,000 sq ft

0.023 to 0.034 fl oz

Amount of Formulation per Acre

1 to 1.5 fl oz

Pounds Active Ingredient per Acre

0.021875 to 0.0328125

Precaution and Remarks

Labeled for spot treatment use in residential and athletic field turf. Can be broadcast in nonresidential turf sites including sod farms, golf courses (excluding greens and collars), parks, roadsides, cemeteries, and commercial properties. Tolerant turf species include Kentucky bluegrass, tall and fine fescue, perennial ryegrass, and centipedegrass at seeding and then anytime beyond 28 days after seeding. Add crop oil concentrate or methylated seed oil for enhanced control at 0.5 to 1% by volume. Don’t apply greater than 2 fl ounces per acre per application or 4 fluid ounces per acre per year. Bleaching intensity of susceptible weeds reduced and broadleaf weed spectrum increased if tankmixed with Drive XLR8, Onetime or Turflon Ester Ultra. For suppression of above-listed weeds, add Turflon Ester Ultra at 1 pound ae per acre and make either 2 or 3 applications at 3 to 4 week intervals depending on Pylex rate. Creeping bentgrass is marginally tolerant to Pylex at 0.25 fluid ounces per acre. Test on a small area before large-scale use. Sequential applications may be required to achieve desired level of weed control.

Presentations

Publications

Species Data

Seedhead/Flower

one or more spike-like raceme

Vernation type

rolled

japanesestiltgrass p1130916
japanesestiltgrass p1130916
japanesestiltgrass p1130916
Ligule Type

membranous with hairs on the back

Growth Season/Life Cycle

summer annual weed

Auricle type

absent

Leaf blade tip shape

sharp-pointed; leaves are asymmetrical (midvein does not divide the leaf into two equal parts)

japanesestiltgrass p1130916
japanesestiltgrass p1130916
japanesestiltgrass p1130916
Leaf blade width

0.12 - 0.4 inches (3 - 10 mm) wide

japanesestiltgrass p1130916
japanesestiltgrass p1130916
japanesestiltgrass p1130916
Stolon Presence

absent

Rhizome Presence

absent

Sheath Type

round