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2022 Midwest Vegetable Guide

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Root Crops – Insects 262 Midwest Veg Guide 2022 Root Crops – Insects Reviewed by Laura Ingwell, Kacie Athey, Elizabeth Long – Sept 2021 Recommended Controls Aphids Pesticide Actara (25WDG) (thiamethoxam) Beet, Carrot, Celeriac, Horseradish, Parsnip, Radish, Rutabaga, Turnip | 1.5-3.0 oz. per acre. Apply as a foliar spray. Do not exceed 4.0 oz. per acre per season for radish. Do not exceed 8.0 oz. per acre per season for beet, carrot, celeriac, horseradish, parsnip, rutabaga, and turnip. Allow 7 days between applications. REI: 12-hour. PHI: 7-day. IRAC 04A. Admire Pro (4.6SC) (imidacloprid) Beet, Carrot, Celeriac, Horseradish, Parsnip, Radish, Rutabaga, Turnip | 0.31-0.74 fl. oz. per 1,000 ft. of row. Apply as chemigation through drip, as an in-furrow spray, shanked in to seed trench, or as a narrow banded spray over eventual row within 14 days of planting. Do not apply more than once per season. REI: 12- hour. PHI: 21-day. IRAC 04A. Beleaf (50SG) (flonicamid) Beet, Carrot, Celeriac, Parsnip, Radish, Rutabaga, Turnip | 2.0-2.8 oz. per acre. Use lower rate for building populations and use higher rate for greater populations or dense foliage. Do not exceed 8.4 oz. per acre per year. Allow 7 days between applications REI: 12-hour. PHI: 3-day IRAC 29. Brigade 2EC (bifenthrin) Beet | Use 2EC formulation at 5.1-6.4 fl. oz. per acre and do not exceed 25.6 fl. oz. per acre per season. Use 10DF, 10 WP, or 10WSB formulations at 12.8-16.0 oz. per acre and do not exceed 64 oz. per acre per season. Allow 7 days between applications. REI: 12-hour. PHI: 1-day. IRAC 03A. RUP. Brigade 2EC (bifenthrin) Carrot, Celeriac, Horseradish, Parsnip, Radish, Rutabaga, Turnip | Use 2EC formulation at 5.1-6.4 fl. oz. per acre and do not exceed 25.6 fl. oz. per acre per season. Use 10DF, 10 WP, or 10WSB formulations at 12.8-16.0 oz. per acre and do not exceed 64 oz. per acre per season. Allow 7 days between applications. REI: 12-hour. PHI: 21-day. IRAC 03A. RUP. Lannate LV (2.4L) (methomyl) Horseradish | 1.5 pts. per acre. Ground application only. REI: 48-hour. PHI: 65-day. IRAC 01A. RUP. M-Pede (3.8) (potassium salts of fatty acids) Beet, Carrot, Horseradish, Parsnip, Radish, Rutabaga | 1-2% by volume. Must contact aphids to be effective. REI: 12-hour. PHI: 0- day. IRAC UN, FRAC NC. OMRI-listed. Malathion 5EC (malathion) Beet, Carrot, Horseradish, Parsnip, Radish, Rutabaga, Turnip | Use 5EC formulations at 1.5-2.0 pts. per acre on beets, carrots, parsnips and horseradish; 1.5 pts. per acre on radishes and rutabagas; or 1.0-2.0 pts. per acre on turnips. Use 57EC formulations at 1.5-2.0 pts. per acre on beets, carrots, and parsnips; 1.0-1.6 pts. per acre on radish and rutabagas; or 1.0-2.0 pts. per acre on horseradish and turnips. Do not exceed 3 applications per season. Allow 7 days between applications. REI: 12-hour on beet, rutabaga, turnip and 24-hour on carrot, horseradish, parsnip. REI: 12-hour. PHI: 7-day. IRAC 01B. Neemix (0.39) (azadirachtin) Beet, Carrot, Celeriac, Horseradish, Parsnip, Radish, Rutabaga, Turnip | 5-7 fl. oz. per acre. Suppression of nymphs and adult feeding deterrence. REI: 4-hour. PHI: 0-day. IRAC UN. OMRI-listed. Platinum 2SC (thiamethoxam) Beet, Carrot, Celeriac, Horseradish, Parsnip, Radish, Rutabaga, Turnip | Use 2SC formulations as a soil treatment at 5.0-12.0 fl. oz. per acre on beet, carrot, parsnip, rutabaga, and turnip or 5.0-6.5 fl. oz. per acre on radish, and do not exceed 12 fl. oz. per acre per season on beet, carrot, parsnip, rutabaga, and turnip or 6.5 fl. oz. per acre on radish. Use 75SG formulations as a soil treatment at 1.7-4.0 oz. per acre on beet, carrot, parsnip, rutabaga, and turnip or 1.7-2.2 fl. oz. per acre on radish, and do not exceed 4.0 oz. per acre per season on beet, carrot, parsnip, rutabaga, and turnip or 2.2 oz. per acre on radish. REI: 12-hour. IRAC 04A. Sivanto 200 (1.67SL) (flupyradifurone) Beet, Carrot, Celeriac, Horseradish, Parsnip, Radish, Rutabaga, Turnip | 7.0-14 fl. oz. per acre. Do not exceed 28.0 fl. oz. per acre per season. Allow 10 days between applications. REI: 4-hour. PHI: 7-day. IRAC 04D. Carrot Weevil Beetle Prior to transplanting, use carrot-baited monitoring traps to determine level of carrot weevil pressure in the field. Begin insecticide applications in the spring when plants have 3-true leaves (petioles) and direct applications at the base of the plant where adult weevils are active. Non-Pesticide Carrot, Parsley | Use crop rotation to reduce buildup of carrot weevil populations. Disk crop residue at the end of the growing season to eliminate food resources and reduce overwintering survival of life stages remaining in the field.

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