Yellow Nutsedge

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(Cyperus esculentus)

Type: Perrenial

Control: difficult to control, often form dense colonies

 

The plant is extremely difficult to remove completely from lawns and gardens, where it is considered an intrusive weed. This is due to the plant having a stratified and layered root system, with tubers and roots being interconnected to a depth of 50 cm or more.The tubers are connected by fragile roots that are prone to snapping when pulled, making the root system difficult to remove intact. The plant can quickly regenerate if a single tuber is left in place.

 

Growth Habit

The color, texture, and growth habit of yellow nutsedge all contribute to aesthetic incompatibility with the desirable lawn turfgrasses. In addition to the aesthetic differences, the leaves of this weed have a rapid rate of vertical elongation resulting in their frequent protrusion above the canopy of the desirable grasses. Combined, these distractions make lawns unattractive during the mid to late summer period. Yellow nutsedge thrives under warm, wet conditions and can often be found in low, damp areas of lawns. This weed is often most problematic during summers with above normal rainfall. Management and environmental factors, including improper mowing, nutrient deficiencies, insect damage, drought stress, etc., which stress or reduce the density or competitive ability of the desirable turfgrasses, will often lead to increased populations of yellow nutsedge.

Because of the seed and tubers that remain in the soil, repeat infestations in subsequent years should be anticipated.

 

Source: http://ohioline.osu.edu/hyg-fact/4000/4010.html

 

 

 

 

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