Preplant incorporated or preemergence
imazethapyr (Pursuit and 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 and 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