Weed Management

Weed Management Tools Rotation Fast, uniform growing crop Cultivation Herbicides

Herbicide Usage

Prowl 3.3E Common name: Pendimethalin, Dinitroaniline, prevents separation of chromosomes during mitosis –similar to Balan, Surflan, Treflan, Prime + Rate: pts (1.5 pts) Application: PPI and Layby (directed) –should be incorporated for max. control annual broadleaf weeds and grasses

Prowl 3.3E Can cause injury to tobacco Stunted and club-like roots –more of a problem on sandy soils –poor incorporation –high rate If used with Spartan: Prowl PPI, Spartan PRE-T

Poast 1.5EC Common name: Sethoxydim, BASF Inhibits ACCase, blocks building of new membranes –similar to Select and Achieve Rate: pts –2 pts crop oil or 1 pt DASH Application: POST over-top –42 d prior to harvest Annual and perennial grass control

Poast 1.5EC Applied to actively growing weeds Up to 42 before harvest One of two remedial control herbicides labeled on tobacco Phyto possible on tender tobacco because of adjuvant

Tillam 6E Common name: Pebulate Thiocarbamate, inhibits biosynthesis of lipids, proteins, fatty acids, etc. –weeds fail to emerge –similar to Sutan, Bolero, Vernam Rate: 2.7 qts Application: PPI annual grasses, some broadleaf weeds –some nutsedge suppression

Tillam 6E Breakdown in control (grasses) during the season is not unusual Can cause stunting –uneven growth, restricted root growth

Devrinol 50DF Common name: Napropramide Acetamide: Inhibits cell division –somewhat similar to Lasso, Frontier, and Dual Rate: lbs Application: PPI, POST-OT and Layby annual grasses and some broadleaf weeds Rotation restriction with small grain

Devrinol 50DF Breakdown in control (grasses) during the season is not unusual Can cause stunting –uneven growth, restricted root growth

Command 3ME Common Name: Command, FMC Carotenoid Biosynthesis Inhibitor, weeds emerge, but are bleached white and die within several days –Loosely similar to Zorial, Sonar and Amitrol Rate: pts Application Timing: PRE-T, PPI, and POST-T (overtop within 7 days) Annual broadleaf and grass weeds

Command 3ME Rotation restrictions: –12 months for small grains and vegetables High drift potential Do not apply: –Winds over 10 mph –Over 30 PSI –Within 1,200 ft of non-target sensitive plants ornamentals, vegetables etc.

Aim Shielded or Hooded Spray Prior to Layby Directed After First Harvest Some small broadleaf weeds Pigweed and Morningglory Common Name: Carfentrazone PROTOX Inhibitor, Cell membranes leak

Spartan 4F Common name: Spartan, FMC Aryl Triazinone, PROTOX inhibitor, cell membranes begin to leak –similar to Blazer, Reflex and Goal Rate: ounces Application: PRE-T and PPI Broadleaf weeds and sedges –some grass suppression

Spartan 4F 18 month rotation restriction on cotton For adequate grass control, grass herbicide must also be used Can cause stunting especially when incorporated Weed control reduced from PRE-T in dry years “Reach-back” potential is high

Cotton Tobacco Distribution of Cotton and Tobacco Acreage

Spartan Can be applied PPI or PRE-T PPI –Can injure tobacco PRE-T –Not convenient for growers

Spartan Charge Aim/Spartan PreMix No need for Aim Pre Tobacco Production Check the label for equivalent rates of Spartan 4F

Aminopyralid Forefront Milestone Auxin Mimic Drift Carryover

Ignite (1/32 nd full rate)

Ignite (1/16 th full rate)

Ignite (1/8 th full rate)

Ignite (1/4 full rate)

Ignite (1/2 full rate)

Dicamba (1/512 th full rate)

Dicamba (1/128 th full rate)

Dicamba (1/32 nd full rate)

Dicamba (1/8 th full rate)

Dicamba (1/2 full rate)

2,4-D (1/512 th full rate)

2,4-D (1/128 th full rate)

2,4-D (1/32 nd full rate)

2,4-D (1/8 th full rate)

2,4-D (1/2 full rate)