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2022 Midwest Vegetable Guide

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Okra – Horticulture 216 Spartan 4F (sulfentrazone) PRE | New plantings: 3.3- 9.0 fl. oz. per acre. Established plantings: 4.5-12.0 fl. oz. per acre. New plantings: Apply after planting before weeds and mint emerge. Established plantings: Apply to established mint when it is dormant, in the fall after postharvest cultivation, and/or in the spring after cultivation. Renovation applications: Up to 8 fl. oz. per acre can be applied at dormancy followed by up to 4 fl. oz. per acre 1-3 days after the first harvest. Dormant and postharvest applications must be at least 100 days apart. Use lower rates on coarse soils with low organic matter. Rainfall or irrigation is required to move herbicide into the soil. Application may injure crop as mint emerges. Application to emerged mint will result in severe injury. Do not exceed 12 fl. oz. per 12-month period. Do not apply to mint grown on sands with less than 1% organic matter. REI: 12-hour. PHI: 92-day for dormant and new planting applicatons, 55-day for renovation applications. HRAC 14. Stinger (3) (clopyralid) POST | 0.33-1.0 pt. per acre. Use 4 fl. oz. of NIS per 25 gals. of spray solution. Apply up to 0.5 pt. in spring or up to 1 pt. in fall. Controls mainly composites and nightshade. To control Canada thistle in spring, apply before bud stage. Do not use mint straw, hay, or spent hay for compost or mulch and do not dispose of on land to be rotated to broadleaf crops due to herbicide remaining in mint hay or straw that will injure broadleaf plants. Do not exceed 1 pt. per acre per growing season. REI: 12-hour. PHI: 45-day. HRAC 04. Thistrol (2L) (MCPB) POST | 1-2 pts. per acre. Apply in spring after mint emerges to suppress broadleaf weeds, or apply in fall to control winter annuals. May injure mint. Oil yields may be reduced if mint is more than 6 inches tall at the time of application. Bindweed suppression is best with spring application when weeds are 6-8 inches long. REI: 24-hour. PHI: 40-day. HRAC 04. trifluralin products (trifluralin) PRE | Apply 1.0- 1.5 pt. per acre of 4 lb. per gal. trifluralin to established, dormant or semi-dormant mint, late winter to spring or in the fall after harvest prior to emergence of targeted weed species. Must be incorporated mechanically or by 0.5 in. rainfall or irrigation within 3 days of application. REI: 12-hour. HRAC 03. Okra – Horticulture Major update by Ben Phillips, Liz Maynard – Oct 2020 Reviewed by Liz Maynard – Aug 2021 Crop Description Okra (Abelmoschus esculentus) is a subtropical plant related to hibiscus that is grown for its young green fruit. Okra requires warm weather for best growth. Some varieties have many small spines, similar to vine crops, which can irritate the skin when harvesting. There are also spineless varieties and red-fruiting varieties. Though okra is often listed on pesticide labels along with eggplants, peppers, and tomatoes, they are not a related species and share few pests. Planting and Spacing Seed 12 to 18 inches apart in rows 36 inches apart. Seed only after the soil has warmed to 65° F to 70° F for several days. Black plastic mulch with drip irrigation will increase yields. Transplants can be used for early production. Fertilizing pH: Maintain a soil pH of 6.0 to 6.5. Okra is very sensitive to low pH soils. Before planting, apply 40 pounds N per acre, 0 to 200 pounds P 2 O 5 per acre, and 0 to 300 pounds K 2 O per acre based on soil test results and recommendations from your state. Sidedress with 40 pounds N per acre after the first harvest. Harvesting Okra should be harvested every 2 to 3 days to maintain optimal market size (2- to 4-inch long pods). Frequent harvesting increases overall yield since the plant will reset pods faster. Okra will yield 8,000 to 10,000 pounds per acre. Time from transplanting to harvest ranges between 50 to 65 days. Midwest Veg Guide 2022

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