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2022 Midwest Vegetable Guide

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Cucurbit Crops – Insects Midwest Veg Guide 2022 139 season. REI: 12-hour. PHI: 1-day for cucumber, 3-day for melon. IRAC 21A. Zeal (72WP) (etoxazole) Cantaloupe/Muskmelon, Cucumber, Pumpkin, Squash, Watermelon | 2-3 oz. per acre. Do not exceed 1 application per season. REI: 12-hour. PHI: 7-day. IRAC 10B. Seed and Root Maggots Non-Pesticide Cantaloupe/Muskmelon, Cucumber, Pumpkin, Squash, Watermelon | Early plowing of cover crops and weeds will generally result in less damage to seedling plants in field. Pesticide Seed treatments for insects (thiamethoxam, spinosad, abamectin) Cantaloupe/Muskmelon, Cucumber, Pumpkin, Squash, Watermelon | Seed treatments containing thiamethoxam (FarMore FI400, Cruiser) offer maximum protection against cucumber beetles and root maggots for about 2 to 3 weeks after seedling emergence. For transplanted crops and direct-seeded plants over 3 weeks old, the concentration of insecticide from seed treatments is no longer strong enough to kill beetles, but can still harm bees due to sublethal doses in the pollen and nectar. Seed treatments should never be used in combination with at-plant soil drenches with flupyradifurone (Sivanto), imidacloprid (Admire or generics), or thiamethoxam (Platinum). IRAC 04A, IRAC 05, IRAC 06. Verimark (1.67SC) (cyantraniliprole) Cantaloupe/Muskmelon, Cucumber, Pumpkin, Squash, Watermelon | 10.0-13.5 fl. oz. per acre. Apply via drip irrigation or soil injection. Do not exceed 30.65 fl. oz. per acre per season, or 2 applications per season. REI: 4-hour. PHI: 1-day. IRAC 28. Slugs Occasionally, slugs and snails seriously damage seedlings; tender, low-growing leafy vegetables; or ripening fruit that are on the ground. Slug and snail feeding damage (hollowed- out areas) can be found anywhere on fruit, but is usually concentrated near the stem. Slugs leave behind telltale slime trails (silvery trails) on the surfaces of fruit or leaves. Slugs and snails are active at night or cloudy days. Slugs and snails favor continuously moist soil and organic mulch. They lay eggs in groups in moist soil, and overwinter in organic mulch. Slugs can complete their entire life cycle in a field. Prevent infestation by scattering bait products to the soil surface around the perimeter of the planting. Make a rescue treatment by scattering the bait products on the soil as a band between rows. Apply in evening after a rain or irrigation. Avoid contact with edible product. Non-Pesticide Cantaloupe/Muskmelon, Cucumber, Pumpkin, Squash, Watermelon | Slug hiding places should be eliminated - such as, boards, stones, weedy areas, or heavy mulch - so the soil can become warm and dry. Raised beds that can dry out more readily than flat beds reduce slug problems. Using black plastic mulch discourages slug build-up because it causes the soil to heat up and dry out. Pesticide Sluggo 1B (iron phosphate) Cantaloupe/Muskmelon, Cucumber, Pumpkin, Squash, Watermelon | 20-44 lb. per acre, or 0.5-1 lb. per 1,000 sq. ft. REI: 0-hour. PHI: 0-day. IRAC UN. OMRI-listed. Squash Bug Pesticide Asana XL (0.66EC) (esfenvalerate) Cantaloupe/Muskmelon, Cucumber, Pumpkin, Squash, Watermelon | 5.8-9.6 fl. oz. per acre. Do not exceed 48 fl. oz. per acre per season. REI: 12-hour. PHI: 3-day. IRAC 03A. RUP. Assail 30SG (acetamiprid) Cantaloupe/Muskmelon, Cucumber, Pumpkin, Squash, Watermelon | 2.5-5.3 oz. per acre. Use 30SG formulations at 2.5-5.3 oz. per acre and do not exceed 26.5 oz. per acre per season. Use 70WP formulations at 1.1-2.3 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. Azera (C) (azadirachtin, pyrethrins) Cantaloupe/Muskmelon, Cucumber, Pumpkin, Squash, Watermelon | 32-48 fl. oz. per acre. Use higher rates for squash bug adults, or when pest pressure is extreme of plant canopy is dense. Do not exceed 10 applications per season. Do not reapply within 3 days except under extreme pest pressure. REI: 12-hour. PHI: 0-day. IRAC UN, IRAC 03A. OMRI-listed. 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.

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