Canada

Fall panicum

Panicum dichotomiflorum

Fall panicum is a fibrous-rooted annual grass that reproduces by seeds and grows up to 3 feet (90 cm) tall. Size varies greatly, depending on competition from other plants for soil moisture and nutrients. The stem often has a zigzag appearance because it bends at the joints (nodes); leaves emerge from the nodes in an alternate fashion. Fall panicum is basically an upright branching grass, but a portion of its outer stems often lie flat (decumbent habit). Roots grow from the enlarged lower nodes that touch the ground.

Leaf blades are lance-shaped, pointed (lanceolate), and have a prominent pale green midvein. Mature leaves are ½ to 1 inch (1.3 to 2.5 cm) wide and 6 to 18 inches (15 to 46 cm) long. Blades are dull on top and glossy underneath. The upper surface may be sparsely hairy, but both sides are usually smooth.

Fall panicum flowers from June to October and reproduces from seeds that mature in late summer and fall. The seed head grows 6 to 12 inches (15 to 30 cm) long and 3 to 6 inches (7. 5 to 15 cm) wide. It has a distinctive pyramid shape and long, wispy flower stalks borne on a single axis.

When shed from the plant, seeds are dormant, and require a cold period of three to four months before they can germinate. Germination begins in late April or early May, and continues throughout the summer. Maximum germination occurs at a soil temperature of 80 °F (27 °C). Plants that emerge early may produce ten times as much dry matter as plants that emerge in July, if competition from crops or other weeds is not severe. Peak growth takes place in late June and July, just before flowering.

Fall panicum grows in a diversity of habitats, including marshes, ditches, savannas, low woods, dry roadsides, and cultivated fields. It is a particular problem in corn and soybean crops, thrives in wet open areas of fields, and tolerates flooding.

Pesticides
AC 299,263 70 WDG
intensity: ★★★
Accent 75 DF
intensity: ★★★
Acuron
intensity: ★★★
Assure II
intensity: ★★★
Axiom DF 68 Water Dispersible Granular
intensity: ★★★
Boundary LQD
intensity: ★★★
Buctril M
intensity: ★★★
Callisto GT
intensity: ★★★
Centurion Emulsifiable Concentrate Post-Emergence
intensity: ★★★
Clearout 41 Plus
intensity: ★★★
Clethodim 250
intensity: ★★★
Clethodim 360EC
intensity: ★★★
Compas 480 EC
intensity: ★★★
Compas Grass
intensity: ★★★
Credit 360
intensity: ★★★
Credit Plus
intensity: ★★★
Cycle
intensity: ★★★
Depose
intensity: ★★★
Destra 75 DF
intensity: ★★★
Devrinol 2-XT
intensity: ★★★
Devrinol 50-DF
intensity: ★★★
Dual II Magnum
intensity: ★★★
Dual Magnum
intensity: ★★★
Durango
intensity: ★★★
Elim EP 25
intensity: ★★★
Elim EP 5 DF
intensity: ★★★
Elim SG Toss-N-Go
intensity: ★★★
Engarde
intensity: ★★★
Engarde 25 SG
intensity: ★★★
Eptam 8-E
intensity: ★★★
Excel Super
intensity: ★★★
Flexstar GT
intensity: ★★★
Frontier Max
intensity: ★★★
Frontier Max Plus
intensity: ★★★
GF-2018
intensity: ★★★
GF-772
intensity: ★★★
Glyfos Bio
intensity: ★★★
Glyfos Bio 450
intensity: ★★★
Glyfos Soluble Concentrate
intensity: ★★★
Glyfos Soluble Concentrate II
intensity: ★★★
Halex GT
intensity: ★★★
Integrity
intensity: ★★★
Lexone DF
intensity: ★★★
Lexone DF Toss-N-Go
intensity: ★★★
Liberty 200 SN
intensity: ★★★
Lumax EZ
intensity: ★★★
Maverick II
intensity: ★★★
MON 76429 Liquid
intensity: ★★★
MON 76431 Liquid
intensity: ★★★
MON 76669 Liquid
intensity: ★★★
MON 79791 Liquid
intensity: ★★★
MON 79828 Liquid
intensity: ★★★
Option 2.25 OD
intensity: ★★★
Outlook
intensity: ★★★
Poast Ultra
intensity: ★★★
Powermax Liquid
intensity: ★★★
Primextra II Magnum
intensity: ★★★
Prism 25
intensity: ★★★
Prism SG
intensity: ★★★
Prowl 60 WDG
intensity: ★★★
Prowl H2O
intensity: ★★★
R/T 540 Liquid
intensity: ★★★
Renegade HC Liquid
intensity: ★★★
Rival Emulsifiable Concentrate Liquid
intensity: ★★★
Roundup Transorb HC Liquid
intensity: ★★★
Roundup Transorb Liquid
intensity: ★★★
Roundup Ultra 2 Liquid
intensity: ★★★
Roundup Ultra Liquid
intensity: ★★★
Roundup WeatherMAX With Transorb 2 Technology Liquid
intensity: ★★★
Roundup Xtend with VaporGrip Technology
intensity: ★★★
Select
intensity: ★★★
Sencor 480 F
intensity: ★★★
Sencor 480 Soybean Flowable
intensity: ★★★
Sencor 500 Flowable
intensity: ★★★
Sencor 75 DF
intensity: ★★★
Sencor Solupak
intensity: ★★★
StartUp
intensity: ★★★
Touchdown IQ
intensity: ★★★
Touchdown Total
intensity: ★★★
Traxion
intensity: ★★★
Tribute Solo 32DF
intensity: ★★★
Tricor 75 DF
intensity: ★★★
Tricor 75 WSB
intensity: ★★★
Tricor Mx
intensity: ★★★
Ultim 37.4 DF
intensity: ★★★
Ultim 75 DF
intensity: ★★★
Venture L
intensity: ★★★
VisionMAX
intensity: ★★★
XtendiMax with VaporGrip Technology
intensity: ★★★
Zemax
intensity: ★★★
Guardian Plus WDG
intensity: ★
SB-01
intensity: ★
Armezon Pro
intensity: N/A
Arrow 240 EC
intensity: N/A
Carnival 540
intensity: N/A
Conquest A Herbicide Tank Mix
intensity: N/A
Conquest B
intensity: N/A
Converge 75 WDG
intensity: N/A
Converge Flexx
intensity: N/A
Converge Pro Suspension
intensity: N/A
Credit 45
intensity: N/A
Crush'R 540
intensity: N/A
Crush'R Plus
intensity: N/A
Define DF
intensity: N/A
Distinct WDG
intensity: N/A
Dual Magnum Soybean
intensity: N/A
Dycleer Agricultural
intensity: N/A
Engenia
intensity: N/A
Fexapan Plus Vaporgrip Technology
intensity: N/A
Flaxmax Herbicide Component of Tank Mix
intensity: N/A
Flufenacet 60 Water Dispersible Granular
intensity: N/A
Glyphogan Plus
intensity: N/A
M1691
intensity: N/A
Maverick III
intensity: N/A
NuGlo
intensity: N/A
Odyssey NXT
intensity: N/A
Odyssey Ultra A
intensity: N/A
Odyssey Ultra B
intensity: N/A
Odyssey Ultra NXT A
intensity: N/A
Odyssey Ultra NXT B
intensity: N/A
Option 35 DF
intensity: N/A
Pinnacle SG
intensity: N/A
Pinnacle SG TOSS-N-GO
intensity: N/A
PrePass 480
intensity: N/A
Sencor DF Soybean
intensity: N/A
Sencor for Soybeans
intensity: N/A
Squadron
intensity: N/A
Syna16003
intensity: N/A
Vantage MAX
intensity: N/A
Vantage Plus
intensity: N/A
Vantage Plus MAX
intensity: N/A
VP480
intensity: N/A