Halosulfuron (SedgeHammer, Halosulfuron Pro and others) provides excellent yellow nutsedge control with very good turfgrass tolerance. When using products containing 75 percent halosulfuron (i.e. 75DF formulation), add a nonionic surfactant to improve control.
Does pulling nutsedge make it worse?
Pulling nutsedge will increase the number of plants because dormant tubers are activated. However, it is possible to control small stands of nutsedge by persistent pulling. Pulling will eventually weaken the plants and cause them to die out.
How deep are nutsedge roots?
Nutsedge outbreaks often start in moist, poorly drained lawn areas, where they quickly develop into large colonies. Their extensive root systems may reach up to 4 feet deep.
Can you dig out nutsedge?
The best way to remove small plants is to pull them up by hand or to hand hoe. If you hoe, be sure to dig down at least 8 to 14 inches to remove the entire plant. Using a tiller to destroy mature plants only will spread the infestation, because it will move the tubers around in the soil.
How do you control yellow nutsedge?
Roundup can effectively kill yellow nutsedge prior to seeding late summer forages or before planting double-crop soybeans. To control emerged nutsedge plants, apply 1 to 3 quarts of Roundup per acre as a broadcast spray, or use a 1 to 2 percent solution (1 to 2 quarts per 25 gallons of water) with hand-held equipment.
What causes yellow nutsedge?
Yellow nutsedge is most problematic in turf that is mown too short, and it thrives in areas where soils remain moist from poor drainage or over- watering. However, yellow nutsedge can also be a problem in well-drained areas, especially thin turf.
How do you dig up nutgrass?
The best way to remove it is by digging it out with a small spade. You have to be extremely diligent with this to ensure there is no roots or bulbs left in the soil as Nutgrass will reappear if left behind.
What should I do about yellow nutsedge?
Since soil clumps containing tubers, rhizomes, and seeds can adhere to tillage and harvest equipment, these should be cleaned of any yellow nutsedge remains before they are used in uninfested fields. Because hay, straw, and crop seed may contain nutsedge seeds or tubers, these commodities should be purchased from a reliable source.
How does yellow nutsedge reproduce?
Yellow nutsedge is a perennial plant that reproduces primarily by small underground tubers — called nutlets — that form at the end of underground stems — called rhizomes (Figure 2). A single plant can produce several hundred of these tubers during the summer. Yellow nutsedge can also spread by rhizomes (Figure 3).
How do you get rid of nutsedge roots?
Moldboard or chisel plowing and/or disking will destroy germinating tubers and smaller nutsedge plants. Tilling will also move nutsedge tubers to the surface, which will dry out the tubers or expose them to temperature extremes. Fall tillage will expose the tubers to cold temperatures, which can reduce tuber and rhizome populations.
How many tubers does a nutsedge produce?
A single plant can produce several hundred of these tubers during the summer. Yellow nutsedge can also spread by rhizomes (Figure 3). Yellow nutsedge produces a seedhead when unmown, but its seeds rarely germinate. Yellow nutsedge actively grows during the heat of summer when cool-season turf grows more slowly.
