Annual Broadleaf Weeds

Preplant incorporated or preemergence

imazethapyr (Pursuit or other trade names)

Rate 0.047 Ib ai/a (3 oz/a Pursuit)

Time Apply preplant incorporated within 1 week of planting. Do not incorporate more than 3 inches deep. Apply preemergence after planting but before crop emerges. Application may be followed by shallow incorporation to improve control.

Remarks May be tank mixed with metribuzin to help control lambsquarters or mayweed. Rainfall is required to move surface applications into weed germination zone. If adequate moisture is not received within 7 days of application, control escaped weeds with rotary hoeing or shallow cultivation.

Caution Do not apply postemergence to lentil. Consult label for crop rotation restrictions. Do not feed treated lentil hay or straw to livestock. Allow at least 60 days between application and harvest.

Site of action Group 2: acetolactate synthase (ALS) inhibitor

Chemical family Imidazolinone

Preemergence

metribuzin (various trade names)

Rate 0.19 to 0.38 lb ai/a (4 to 8 oz/a of the 75% DF)

Time Apply after seeding, but before lentils germinate. Metribuzin may be incorporated 1 to 2 inches deep if soil is dry. If moisture is present or expected, preemergence treatment is best.

Remarks Will not control nightshade.

Caution Determine your lentil variety's tolerance before applying metribuzin. See other label precautions. Do not use on coarse soils or on any soil with less than 1.5% organic matter. Do not use on clay knobs or poorly covered subsoils. Crop may be injured if it becomes stressed. Follow label regarding crop rotations. Do not exceed one application or 0.66 lb/a metribuzin 75DF per season. Do not apply if seeds planted less than 2 inches deep. Preharvest interval is 75 days.

Site of action Group 5: photosystem II inhibitor

Chemical family Triazine

Postemergence

imazamox (Beyond or other trade names)

Clearfield lentil only

Rate 0.031 to 0.047 lb ai/a (4 to 6 oz/a Beyond)

Time Apply early postemergence to Clearfield lentil from the 2-leaf stage to before flower bud formation when weeds are actively growing and are 1 to 3 inches tall or wide.

Remarks A nonionic surfactant and a liquid nitrogen fertilizer or ammonium sulfate solution is required for maximum efficacy. See label for more information on adjuvants and tank-mixes.

Caution Use only on Clearfield lentil varieties. Do not use crop oil concentrate or methylated seed oil with Beyond on Clearfield lentils. Do not apply more than 0.047 lb ai/a during the growing season. See label for crop rotation restrictions.

Site of action Group 2: acetolactate synthase (ALS) inhibitor

Chemical family Imidazolinone

metribuzin (various trade names)

Rate 0.125 to 0.25 lb ai/a (1.67 to 5.3 oz/a of the 75% DF)

Time Apply to weeds less than 2 inches high and before lentils are 6 inches high.

Remarks Will not control nightshade.

Caution Do not use on coarse soils or on soils with less than 1.5% organic matter. Do not use on clay knobs or poorly covered subsoils. Crop symptoms may appear, especially under moist conditions. Use the low rate when conditions are moist. Do not apply more than once preemergence and once postemergence per season. Do not apply over moist soils, wet foliage, or within 3 days of cool, wet weather. Do not exceed 0.66 lb/a metribuzin 75 DF per year. Preharvest interval is 75 days.

Site of action Group 5: photosystem II inhibitor

Chemical family Triazine

Harvest aid

carfentrazone (Aim EC)

Rate 0.016 to 0.096 lb ai/a (1.0 to 6.1 oz/a Aim EC)

Time Apply at maturity when 80 to 90% of seed pods are yellow or buck skin color and only 30% of green leaves remain on the plant.

Remarks Can be applied up to 0 days before harvest. Use a minimum of 15 gal of finished spray per acre for ground application and 5 gal per acre for aerial application. MSO or COC is required at 1 to 2% v/v. The addition of liquid nitrogen fertilizer at 2 to 4% v/v may enhance performance.

Caution Do not apply more than 6.1 oz/a per season.

Site of action Group 14: protoporphyrinogen oxidase (PPO) inhibitor

Chemical family Triazinone

glyphosate (several trade names)

Rate 0.6 to 2.25 lb ae/a glyphosate (product rate will vary depending on formulation)

Time Apply to crop at the hard dough stage.

Remarks Preharvest interval is 7 days. Not recommended for lentils grown for seed.

Caution Only certain formulations are labeled. See label. See label for adjuvant use. Do not feed treated vines or hay.

Site of action Group 9: inhibits EPSP synthase

Chemical family None generally accepted

paraquat (Gramoxone SL 2.0 or other trade names)

Rate 0.3 to 0.5 lb ai/a (1.2 to 2 pints/a Gramoxone)

Time Apply when crop is mature: this means at least 80% of pods are yellowing and mostly ripe with no more than 30% of leaves still green.

Remarks Use with a nonionic surfactant at 0.25 % v/v. Split applications permitted. Do not exceed two applications per season or 2 pints/a of Gramoxone SL 2.0. Apply in at least 20 gal/a water by ground or in at least 5 gal/a by air.

Caution A restricted-use herbicide. Do not allow to drift from target site. Do not apply within 7 days of harvest.

Site of action Group 22: photosystem I electron diversion

Chemical family Bipyridilium

saflufenacil (Sharpen)

Rate 0.022 to 0.044 lb ai/a (1.0 to 2.0 oz/a Sharpen)

Time Apply over the top of lentils that have reached physiological maturity (at least 80% yellow/brown pods and no more than 30% of leaves are still green.

Remarks Allow up to 10 days for optimum desiccation effect. Thorough spray coverage and an MSO plus ammonium-based adjuvant system are required for optimum desiccation.

Caution Maximum cumulative amount per cropping season for desiccation uses is 2.0 oz/a. Do not apply within 2 days of harvest.

Site of action Group 14: protoporphyrinogen oxidase (PPO) inhibitor

Chemical family Uracil