Preplant surface, preplant incorporated, or preemergence
flumioxazin (Valor EZ, Chateau EZ and other trade names)
Rate 0.052 lb ai/A (2 oz/A Valor EZ)
Time Apply before planting, or within 2 days after planting but before crop emerges.
Remarks Preplant incorporation applications may result in reduced weed control. Heavy rains or cool conditions at or near crop emergence may result in crop injury and a delay in crop maturity.
Caution Do not exceed 2.0 oz/A in a single application or 2.0 oz/A in a single growing season.
Site of action Group 14: protoporphyrinogen oxidase (PPO) inhibitor
Chemical family N-phenylphthalimide
saflufenacil (Sharpen)
Rate 0.022 to 0.066 lb ai/A (1 to 3 oz/A Sharpen)
Time For most effective control, apply 1.0 oz/A Sharpen early preplant for burndown of broadleaf weeds and follow with 1.0 to 3.0 oz/A Sharpen at least 14 days later from early preplant until prior to crop emergence for burndown plus residual broadleaf weed control.
Remarks An adjuvant system is required for optimum broadleaf burndown activity. Do not apply more than a maximum cumulative rate of 4.0 oz/A of Sharpen per cropping season.
Caution Do not apply when legumes have reached the cracking stage or after emergence, as severe crop injury will occur. Ensure that the seed row is closed. Do not apply with other products containing Group 14 herbicides (sulfentrazone/Spartan; flumioxazin/Valor) as a tank-mix or sequential application within 30 days, because crop injury may result.
Site of action Group 14: protoporphyrinogen oxidase (PPO) inhibitor
Chemical family Pyrimidinedione
sulfentrazone (Spartan 4F and other trade names)
Rate 0.07 to 0.25 lb ai/A (2.25 to 8 oz/A Spartan 4F)
Time Apply fall or spring preplant, preemergence, or preplant incorporated (spring only).
Remarks Consult label to determine rate for soil pH, percentage of organic matter, and texture. Consult label for specific crop rotation restrictions.
Caution Do not exceed 8 oz/A per 12-month period. Do not incorporate to depths greater than 2 inches. Do not apply after crop emerges or if seedlings are near soil surface. Do not apply to frozen soil.
Site of action Group 14: protoporphyrinogen oxidase (PPO) inhibitor
Chemical family Aryl triazinone
Preplant surface or preemergence
sulfentrazone + carfentrazone (Spartan Charge)
Rate 0.074 to 0.251 lb ai/A sulfentrazone + 0.008 to 0.028 lb ai/A carfentrazone (3.0 to 10.2 oz Spartan Charge)
Time Apply fall or spring as preplant or preemergence.
Remarks Consult label to determine rate for soil pH, percentage of organic matter, and texture. Consult label for specific crop rotation restrictions.
Caution Do not exceed 0.28 lb ai (10.2 oz) Spartan Charge per 12-month period. Do not apply after crop emerges or if seedlings are near soil surface. Do not apply on sandy soils with less than 1% organic matter. Do not apply to frozen soil. Do not incorporate as this can destroy the herbicide barrier.
Site of action Group 14: protoporphyrinogen oxidase (PPO) inhibitor.
Chemical family Aryl triazinone
sulfentrazone + S-metolachlor (Spartan Elite and other trade names)
Rate 0.10 to 0.21 lb ai/A sulfentrazone and 0.94 to 1.87 lb ai/A S-metolachlor (19 to 38 oz/A Spartan Elite)
Time Apply fall or spring as preplant or preemergence.
Remarks Consult label to determine rate for soil percentage of organic matter, and texture. Consult label for specific crop rotation restrictions.
Caution Do not apply to coarse-textured soils with less than 1% organic matter. Adequate rainfall is required for herbicide activation from rainfall. If activating moisture is not received within 7 to 10 days after application, a shallow incorporation may be needed to obtain adequate weed control. Do not incorporate to depths greater than 2 inches. Do not apply to frozen soils. Do not use for forage within 60 days after an application. Do not cut for hay within 120 days after application.
Site of action Group 14: protoporphyrinogen oxidase (PPO) inhibitor; Group 15: inhibits very long chain fatty acid synthesis
Chemical family (sulfentrazone) Aryl triazinone; (S-metolachlor) Chloroacetamide
Preemergence
metribuzin (TriCor DF and other trade names)
Rate 0.25 to 0.38 lb ai/A (5.3 to 8 oz/A TriCor DF)
Time Apply after planting but before crop germinates.
Remarks Will not control nightshade. Under dry conditions, shallow, 1 to 2 inch incorporation will improve weed suppression.
Caution Determine the chickpea variety's tolerance before applying metribuzin. See other label precautions. Do not use on coarse soils or if organic matter is less than 1.5%. Do not use on clay knobs or poorly covered subsoils. Crop may be injured if stressed. Follow label regarding crop rotations. Do not apply more than once per season. Do not apply if seeding depth is less than 2 inches.
Site of action Group 5: photosystem II inhibitor
Chemical family Triazine