Canada

Russian pigweed

Axyris amaranthoides

A. amaranthoides is an annual monoecious (has both the male and female flowers in the same individual) plant. It has a taproot type of root system, and its stem is about 20–80 centimetres (8–31 in) tall and rigidly upright. The lower leaves have short petioles and have a narrowly oval to long-pointed shape. The upper leaves are narrowly lance-like to egg shaped, and attached directly to the stems or branches without petioles. The leaves on the main stems are much bigger than branch leaves, but all the leaves are serrated with slightly bent or curved backward or downward edges. A single leaf is present at each node along the stem, forming an ascending spiral pattern.
Male flowers grow on the top of stem in the form of slim spike. One or two female flowers grow from the leaf axils below the male flowers. Fruits are oval-shaped, reddish-coloured and dry (i.e., with thin pericarps). Some fruits are winged on one side and flattened, and will germinate rapidly. Other fruits are wingless, and tend to be dormant. The flowering time is in July and August.

Pesticides
2,4-D Amine 500
intensity: ★★★
2,4-D Amine 600
intensity: ★★★
2,4-D Ester 700
intensity: ★★★
2,4- D Ester 700
intensity: ★★★
Accurate
intensity: ★★★
Adrenalin SC
intensity: ★★★
Agri Star 2,4-D Ester 700
intensity: ★★★
Agri Star MCPA DMA 500
intensity: ★★★
Albaugh 2,4-D Amine 600
intensity: ★★★
Albaugh 2,4-D Amine 600 Liquid
intensity: ★★★
Albaugh MCPA Ester 600 Liquid
intensity: ★★★
Blackhawk
intensity: ★★★
Curtail M
intensity: ★★★
Dicamba L
intensity: ★★★
Dyvel
intensity: ★★★
Enlist Duo
intensity: ★★★
Estaprop XT
intensity: ★★★
Flaxmax
intensity: ★★★
Formula 40 C
intensity: ★★★
Frontline A
intensity: ★★★
Frontline I
intensity: ★★★
Frontline XL
intensity: ★★★
GF-2654 TC
intensity: ★★★
GF-2654 TSOY
intensity: ★★★
GF-2726 TSOY
intensity: ★★★
Marksman
intensity: ★★★
MCPA 2 EH Ester 600
intensity: ★★★
MCPA Amine
intensity: ★★★
MCPA Amine 600
intensity: ★★★
MCPA DMA 500
intensity: ★★★
MCPA Ester 500 LV
intensity: ★★★
MCPA Ester 600
intensity: ★★★
MCPA-K
intensity: ★★★
MCPA Sodium 300
intensity: ★★★
Plus M Ester 600
intensity: ★★★
PP-3317
intensity: ★★★
Restore II
intensity: ★★★
Roundup Ultra Liquid
intensity: ★★★
Roundup Xtend with VaporGrip Technology
intensity: ★★★
Stellar B
intensity: ★★★
Stellar XL
intensity: ★★★
XtendiMax with VaporGrip Technology
intensity: ★★★
MCPA Ester 500
intensity: ★★
Arsenal
intensity: ★
Accurate WSB
intensity: N/A
Ally 20 SG
intensity: N/A
Ally Herbicide Dry Flowable 60
intensity: N/A
Approve
intensity: N/A
Banvel 483
intensity: N/A
Banvel
intensity: N/A
Banvel Dry Eg
intensity: N/A
Boost M
intensity: N/A
Broadband
intensity: N/A
Carnival 540
intensity: N/A
Clearout 41 Plus
intensity: N/A
Clopyralid
intensity: N/A
Credit 360
intensity: N/A
Credit 45
intensity: N/A
Credit Plus
intensity: N/A
Credit Xtreme
intensity: N/A
Crush'R 540
intensity: N/A
Curtail F
intensity: N/A
DB-858
intensity: N/A
Deploy 75 DF
intensity: N/A
DPX-R9674 50 SG
intensity: N/A
Durango
intensity: N/A
Dycleer Agricultural
intensity: N/A
Elim EP 25
intensity: N/A
Elim SG Toss-N-Go
intensity: N/A
Engenia
intensity: N/A
Express DF 75
intensity: N/A
Express SG EUP
intensity: N/A
Express Toss-N-Go Dry Flowable 75
intensity: N/A
Fexapan Plus Vaporgrip Technology
intensity: N/A
Flaxmax Herbicide Component of Tank Mix
intensity: N/A
Fluroxypyr 180
intensity: N/A
Fluroxypyr EC
intensity: N/A
Fluroxypyr WDG
intensity: N/A
FX
intensity: N/A
GF-2018
intensity: N/A
GF-772
intensity: N/A
Glean
intensity: N/A
GlyKamba
intensity: N/A
Impede
intensity: N/A
Inferno WDG
intensity: N/A
M1691
intensity: N/A
Metsulfuron Methyl EUP Toss-N-Go
intensity: N/A
MON 76429 Liquid
intensity: N/A
MON 76431 Liquid
intensity: N/A
MON 76669 Liquid
intensity: N/A
MON 79791 Liquid
intensity: N/A
MON 79828 Liquid
intensity: N/A
Nimble
intensity: N/A
Nimble WSB
intensity: N/A
Nuance
intensity: N/A
Nuance WSB
intensity: N/A
Nufarm Boost
intensity: N/A
Nufarm Fluroxypyr
intensity: N/A
Nufarm Glyphosate 360
intensity: N/A
Nufarm Spike 75
intensity: N/A
NuGlo
intensity: N/A
Perimeter
intensity: N/A
Perimeter II
intensity: N/A
Polaris
intensity: N/A
Powermax Liquid
intensity: N/A
PP-31155
intensity: N/A
Prestige A
intensity: N/A
Prestige B
intensity: N/A
Prestige XC A
intensity: N/A
Prestige XC B
intensity: N/A
Prestige XL
intensity: N/A
Pulsar
intensity: N/A
Refine Extra 75 DF
intensity: N/A
Refine Extra 75 Toss-N-Go
intensity: N/A
Refine SG
intensity: N/A
Refine SG Toss-N-Go
intensity: N/A
Roundup Transorb Liquid
intensity: N/A
Sentrallas
intensity: N/A
Spike
intensity: N/A
Spitfire 50 SC
intensity: N/A
Thrasher II
intensity: N/A
Touchdown IQ
intensity: N/A
Tribenuron Methyl EUP DF 75
intensity: N/A
Triton Broadleaf
intensity: N/A
XRM-5171
intensity: N/A