Canada

Yellow nutsedge

Cyperus esculentus

Cyperus esculentus (also called chufa sedge, nut grass, yellow nutsedge, tiger nut sedge, or earth almond) is a crop of the sedge family widespread across much of the world. It is native to most of the Western Hemisphere as well as southern Europe, Africa, Madagascar, the Middle East and the India Subcontinent. It has become naturalized in many other regions, including Ukraine, China, Hawaii, Indochina, New Guinea, Java, New South Wales and various oceanic islands.
C. esculentus is an annual or perennial plant, growing to 90 cm (3 feet) tall, with solitary stems growing from a tuber. The plant is reproduced by seeds, creeping rhizomes, and tubers. The stems are triangular in section and bear slender leaves 3–10 mm (1/8 to 1/2 inches) wide. The spikelets of the plant are distinctive, with a cluster of flat, oval seeds surrounded by four hanging, leaf-like bracts positioned 90 degrees from each other. They are 5 to 30 mm (about 3/8 to 1 1/8 inches) long and linear to narrowly elliptic with pointed tips and 8 to 35 florets. The color varies from straw-colored to gold-brown. They can produce up to 2420 seeds per plant. The plant foliage is very tough and fibrous and is often mistaken for a grass. The roots are an extensive and complex system of fine, fibrous roots and scaly rhizomes with small, hard, spherical tubers and basal bulbs attached. The tubers are 0.3 – 1.9 cm (1/8 to 1/2 inches) in diameter and the colors vary between yellow, brown, and black. One plant can produce several hundred to several thousand tubers during a single growing season. With cool temperatures, the foliage, roots, rhizomes, and basal bulbs die, but the tubers survive and resprout the following spring when soil temperatures remain above 6 °C (42.8 °F). They can resprout up to several years later. When the tubers germinate, many rhizomes are initiated and end in a basal bulb near the soil surface. These basal bulbs initiate the stems and leaves above ground, and fibrous roots underground. C. esculentus is wind pollinated and requires cross pollination as it is self–incompatible.

Pesticides
Arsenal
intensity: ★★★
Arsenal Powerline
intensity: ★★★
Callisto GT
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Chaperone
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Cheminova Glyphosate
intensity: ★★★
Cheminova Glyphosate II
intensity: ★★★
Classic 25 DF
intensity: ★★★
Classic Grande
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Credit 360
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Credit Plus
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Cycle
intensity: ★★★
Depose
intensity: ★★★
Dual II Magnum
intensity: ★★★
Dual Magnum
intensity: ★★★
Durango
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Eptam 8-E
intensity: ★★★
Flexstar GT
intensity: ★★★
GF-2018
intensity: ★★★
GF-772
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Glyfo Silvi
intensity: ★★★
Glyfos Bio
intensity: ★★★
Glyfos Bio 450
intensity: ★★★
Glyfos Soluble Concentrate
intensity: ★★★
Glyfos Soluble Concentrate II
intensity: ★★★
Glyphos AU Soluble Concentrate
intensity: ★★★
Glyphosate 480
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Glyphosate-Trimesium 480
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Laddok
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Lexone DF Toss-N-Go
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Maverick II
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MON 76429 Liquid
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MON 76431 Liquid
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MON 76669 Liquid
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MON 79791 Liquid
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MON 79828 Liquid
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Powermax Liquid
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R/T 540 Liquid
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Renegade HC Liquid
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Roundup Transorb HC Liquid
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Roundup Transorb Liquid
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Roundup Transorb Max Liquid
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Roundup Ultra 2 Liquid
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Roundup Ultra Liquid
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Roundup WeatherMAX With Transorb 2 Technology Liquid
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Roundup Xtend with VaporGrip Technology
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StartUp
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Touchdown 480 Liquid
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Touchdown IQ
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Touchdown Total
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Traxion
intensity: ★★★
Vision Silviculture
intensity: ★★★
VisionMAX
intensity: ★★★
GF-2726 TSOY
intensity: ★★
Halex GT
intensity: ★★
Primextra II Magnum
intensity: ★★
Boundary LQD
intensity: ★
Dacthal W-75
intensity: ★
Frontier Max
intensity: ★
Frontier Max Plus
intensity: ★
Imazethapyr 240 SL
intensity: ★
Outlook
intensity: ★
Pursuit Herbicide for Soybeans
intensity: ★
XtendiMax with VaporGrip Technology
intensity: ★
Carnival 540
intensity: N/A
Clearout 41 Plus
intensity: N/A
Credit
intensity: N/A
Credit 45
intensity: N/A
Crush'R 480
intensity: N/A
Crush'R 540
intensity: N/A
Crush'R Plus
intensity: N/A
Engenia
intensity: N/A
Fexapan Plus Vaporgrip Technology
intensity: N/A
Glyphogan Plus
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Integrity
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Lexone DF
intensity: N/A
M1691
intensity: N/A
Maverick III
intensity: N/A
Nu-Image
intensity: N/A
Nufarm Glyphosate 360
intensity: N/A
NuGlo
intensity: N/A
Polaris
intensity: N/A
PrePass 480
intensity: N/A
Pursuit
intensity: N/A
Sencor 480 F
intensity: N/A
Sencor 480 Soybean Flowable
intensity: N/A
Sencor 500 Flowable
intensity: N/A
Sencor 75 DF
intensity: N/A
Sencor Solupak
intensity: N/A
Vantage
intensity: N/A
Vantage MAX
intensity: N/A
Vantage Plus
intensity: N/A
Vantage Plus MAX
intensity: N/A
VP480
intensity: N/A