Landscape Management, April 2012
WEEDWATCH STANDING SENTINEL TO PROTECT PLANT HEALTH For more information regarding these and other turf weeds and related control technologies and tips please visit www DowProvesIt com or call 800 255 3726 BROUGHT TO YOU BY LANDSCAPEMANAGEMENT NET APRIL 2012 36 PHOTOS COURTESY DR SHAWN ASKEW FAR LEFT JAMES H MILLER TED BODNER SOUTHERN WEED SCIENCE SOCIETY BUGWOOD ORG Recommended Dow AgroSciences solution Dimension specialty herbicide Recommended Dow AgroSciences solution Dimension specialty herbicide CONTROL TIPS For non selective control of established Marys grass glyphosate can be used There are limited choices for complete post emergent control of this species in established turfgrass Marys grass is identi ed as a class C noxious weed in some areas so preventing the germination and establishment of it is critical Apply a pre emergent herbicide in early spring prior to germination State restrictions on the sale and use of Dimension specialty herbicide products apply JAPANESE STILTGRASS Microstegium vimineum IDENTIFICATION TIPS This bunch type summer annual is commonly found in sandy soils Stems bend and root at the lower nodes and have a spreading creeping structure Leaf blades and sheaths are without hair Leaf margins have long stiff hairs at the base The ower head has two to seven spikelets at the tip of the stem Its seed head resembles a crows foot and each plant may produce up to 60000 seeds CONTROL TIPS Properly mow water and fertilize lawn to encourage healthy growth and minimize thin turf This species can be invasive and is a proli c seed producer Appropriately labeled pre emergent herbicides are the most effective method of control IDENTIFICATION TIPS This summer annual also known as Marys grass resembles bamboo Its leaves are pale green lance shaped and asymmetrical with a shiny mid rib Slender stalks of tiny owers are produced in late summer and dry fruits achenes are produced shortly afterward It spreads by seeds and rooting at joints along the stem Seeds produced by this plant can remain viable in the soil for at least three years CROWFOOTGRASS Dactyloctenium aegyptium
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