Cyperus rotundus, commonly known as nutsedge, is a malignant weed that is very difficult to control and can be found in many crop fields. Here, we introduce some effective herbicides for eradicating Cyperus rotundus.
Effective Herbicides for Eliminating Cyperus Rotundus
1. Bentazon
Bentazon, also known as Basagran, is a selective post-emergence herbicide that primarily acts through contact. It also has mild systemic properties. It is mainly used to control broadleaf weeds but can also be effective against Cyperus rotundus and other difficult-to-control weeds like Cyperus esculentus.
2. Halosulfuron-Methyl
Halosulfuron-Methyl, marketed as SedgeHammer, inhibits the biosynthesis of essential branched-chain amino acids such as leucine, isoleucine, and valine in weeds, thus suppressing root growth and causing root necrosis. This herbicide is particularly effective against Cyperus rotundus, Cyperus esculentus, and other sedges, as well as various broadleaf weeds.
3. 2,4-D Amine Salt & Glyphosate Combination
The combination of 2,4-D amine salt and glyphosate, commonly known as 2,4-D + Glyphosate, is a non-selective herbicide that disrupts plant metabolism, leading to weed death. It has strong systemic properties and acts primarily through contact. Typically, weeds show signs of poisoning within 2-6 hours after application and die within 2-3 days. This combination is effective against tough perennial weeds such as Eleusine indica, Conyza canadensis, Cyperus rotundus, Cirsium arvense, and Phragmites australis.
4. 2,4-D Amine Salt
2,4-D Amine Salt is a phenoxyacetic acid herbicide that works as a hormone disruptor. It is particularly effective against sedge family weeds such as Cyperus rotundus, Cyperus esculentus, Scirpus, and various broadleaf weeds like Paspalum distichum and Commelina communis. Weeds typically show signs of poisoning on the same day and die completely within 3-7 days. Generally, one application per season is sufficient.
5. Glyphosate
Glyphosate is a non-selective herbicide that is effective against Cyperus rotundus. The herbicide is absorbed through the leaves and translocated to the roots, achieving complete eradication. However, glyphosate should only be used for weed control in non-crop areas or for directed applications between rows of crops that are not sensitive to glyphosate.
Important Considerations
Cyperus rotundus is ranked among the top ten most malignant weeds in the world and is extremely difficult to control. Therefore, it is crucial to choose the right herbicide for effective eradication. The above information provides an overview of some of the most effective herbicides for eliminating Cyperus rotundus.
