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2022 Midwest Vegetable Guide

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Cucurbit Crops – Insects Midwest Veg Guide 2022 135 cultivars will help to avoid severe disease problems. Varieties with host resistance include cucumbers (cucumber mosaic virus) and squash (watermelon mosaic virus; zucchini yellow mosaic virus; cucumber mosaic virus; papaya ringspot virus). Cucurbit Crops – Insects Reviewed by Laura Ingwell, Raymond Cloyd – Sept 2021 Recommended Controls Aphids Non-Pesticide Cantaloupe/Muskmelon, Cucumber, Pumpkin, Squash, Watermelon | Limiting insecticide use will conserve predators and parasites that help control aphid populations. Monitor the presence of predators and parasitized aphids. Several predators per aphid colony will probably bring the aphid population under control without insecticide. Pesticide Actara (25WDG) (thiamethoxam) Cantaloupe/Muskmelon, Cucumber, Pumpkin, Squash, Watermelon | 1.5-3.0 oz. per acre. Apply as a foliar spray. Do not exceed 11 oz. per acre per season. See pollinator precautions. REI: 12-hour. PHI: 0- day. IRAC 04A. Admire Pro (4.6SC) (imidacloprid) Cantaloupe/Muskmelon, Cucumber, Pumpkin, Squash, Watermelon | 7.0-10.5 fl. oz. per acre. See label for various soil application methods. Do not exceed 10.5 fl. oz. per acre per season. Should never be used in combination with insecticide seed treatments. REI: 12-hour. PHI: 21-day. IRAC 04A. Assail 30SG (acetamiprid) Cantaloupe/Muskmelon, Cucumber, Pumpkin, Squash, Watermelon | Use 30SG formulations at 2.5-4.0 oz. per acre and do not exceed 26.5 oz. per acre per season. Use 70WP formulations at 1.1-1.7 oz. per acre and do not exceed 11.5 oz. per acre per season. Allow 5 days between applications. REI: 12-hour. PHI: 0- day. IRAC 04A. Belay (2.13SC) (clothianidin) Cantaloupe/Muskmelon, Cucumber, Pumpkin, Squash, Watermelon | Soil applications: 9-12 fl. oz. per acre. Foliar applications: 3-4 fl. oz. per acre. Do not use as foliar after the 4th true leaf on main stem has unfolded. Do not exceed 12 fl. oz. per acre per season. REI: 12-hour. PHI: 21-day. IRAC 04A. Beleaf (50SG) (flonicamid) Cantaloupe/Muskmelon, Cucumber, Pumpkin, Squash, Watermelon | 2-2.8 oz. per acre. Do no exceed 3 applications per season. REI: 12-hour. PHI: 0-day. IRAC 29. Dimethoate 4EC (dimethoate) Cantaloupe/Muskmelon, Watermelon | Use 2.67EC formulations at 0.75-1.5 pts. per acre and do not exceed 3 pts. per acre per season. Use 4EC, LV-4, and 400EC formulations at 0.5-1.0 pt. per acre and do not exceed 2 pts. per acre per season. REI: 48-hour. PHI: 3- day. IRAC 01B. Exirel (0.83SE) (cyantraniliprole) Cantaloupe/Muskmelon, Cucumber, Pumpkin, Squash, Watermelon | 13.5-20.5 fl. oz. per acre. Do not exceed 61 fl. oz. per acre per season. REI: 12-hour. PHI: 1-day. IRAC 28. Fulfill (50WDG) (pymetrozine) Cantaloupe/Muskmelon, Cucumber, Pumpkin, Squash, Watermelon | 2.75 oz. per acre. Do not exceed 5.5 fl. oz. per acre per season. REI: 12-hour. PHI: 0-day. IRAC 09B. Harvanta (0.42SL) (cyclaniliprole) Cantaloupe/Muskmelon, Cucumber, Pumpkin, Squash, Watermelon | 10.9-16.4 fl. oz. per acre. Use with adjuvant. Do not exceed 65.6 fl. oz. per acre per year. REI: 4-hour. PHI: 1-day. IRAC 28. Lannate LV (2.4L) (methomyl) Cantaloupe/Muskmelon, Cucumber, Squash, Watermelon | 1.5-3.0 pts. per acre. Not for pumpkins or winter squash. Do not exceed 18 pts. per acre per season. REI: 48-hour. PHI: 1-day for 1.5 pts. rate, 3- day for rates over 1.5 pts. IRAC 01A. RUP. M-Pede (3.8) (potassium salts of fatty acids) Cantaloupe/Muskmelon, Cucumber, Pumpkin, Squash, Watermelon | 1-2% by volume. Must contact insect to be effective. REI: 12-hour. PHI: 0-day. IRAC UN, FRAC NC. OMRI-listed. Malathion 5EC (malathion) Cantaloupe/Muskmelon, Cucumber, Pumpkin, Squash, Watermelon | Use 5EC formulations at 1.5-2.8 pts. per acre for cucumber and squash, 1.6 pts. per acre for melon, 1.5 pts. per acre for pumpkin, 1.6- 2.8 pts. per acre for squash, or 1.5-2.5 pts. per acre for watermelon. Use 57EC formulations at 1.5 pts. per acre on cucumber, melon, pumpkin, squash, and watermelon. Do not exceed 2 applications per season on cucumbers, pumpkins, melons, and watermelons, or 3 applications per season on squash. REI: 12-hour. PHI: 1-day. IRAC 01B. Perm-Up 25DF (permethrin) Cantaloupe/Muskmelon, Cucumber, Pumpkin, Squash, Watermelon | 6.4-12.8 oz. per acre. Use 25W, 25WP, and 25DF formulations at 6.4-12.8 oz. per acre and do not exceed 51.2 oz. per acre per season for cantaloupe and 76.8 oz. per acre per season for all other cucurbits. Use 12.8 oz. per acre for aphids. Use 3.2EC formulations at 4-8 fl. oz. per acre and do not exceed 32 fl. oz. per acre per season on cantaloupe. or 48 fl. oz. per acre

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