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2022 Midwest Vegetable Guide

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Fruiting Vegetables – Diseases Midwest Veg Guide 2022 151 and Serenade used as labeled may help manage copper- resistant strains. Non-Pesticide Eggplant, Pepper, Tomato | Use disease-free seed and transplants. Hot water seed treatment may reduce this seedborne disease. Use temperatures and times of 122 F for 25 minutes for eggplants and tomato, and 125 for 30 minutes for pepper. Practice good greenhouse sanitation of equipment, tools propagation trays/pots, and surfaces. Avoid fields with a history of the disease and rotate to non- Solanaceous crops for 2-3 years. Stake and mulch the crops to improve air flow and reduce splashing. Avoid working in wet fields. Prompt destruction of the finished crop with tillage to rapidly breakdown tissue is an important method to prevent disease build-up. Pesticide Actigard (0.5WDG) (acibenzolar-s-methyl) Pepper, Tomato | 0.3-0.75 oz. per acre. Begin season with lower rates and increase as plant canopy increases. Do not exceed 6 oz. per season. REI: 12-hour. PHI: 14-day. FRAC P01. copper products (copper hydroxide, copper octanoate, copper oxychloride, copper sulfate, copper diammonium diacetate complex, cuprous oxide) Pepper, Tomato | Several formulations of copper (Badge, Champ, Kocide) are labelled for use. See label for directions. Copper-resistant strains of the bacterial spot pathogen are common in the Midwest. Mancozeb products (e.g., Dithane, Manzate, Penncozeb) when tank-mixed with copper products, allow more copper to become available on the leaf surface and so may help manage copper-resistant bacterial strains. REI: 4 to 48-hour. PHI: 0- day. FRAC M01. OMRI-listed. Regalia (5) (Reynoutria sachalinensis extract) Eggplant, Pepper, Tomato | 1-4 qts. per acre. Use in a program with copper products. For damping-off, | For Fusarium, Pythium, Rhizoctonia spp., use 1-4 qts. per acre. On greenhouse- produced seedlings, drench planting medium with 1-2 qts. per gal. water or dip seedlings in solution of 1-2 qts. per 100 gal. water immediately before transplanting. REI: 4-hour. PHI: 0- day. FRAC P05. OMRI-listed. Serenade Opti (26.2WP) (Bacillus subtilis strain QST- 713) Eggplant, Pepper, Tomato | Use Serenade Opti at 14-20 fl. oz. per acre, or Serenade ASO at 2-4 qts. per acre. Can be used in a rotational program with effective fungicides to reduce synthetic fungicide use. REI: 4-hour. PHI: 0-day. FRAC 44. OMRI-listed. Tanos (DF) (famoxadone, cymoxanil) Pepper, Tomato | Tomato: Early blight at 6-8 oz. per acre. Late blight and anthracnose at 8 oz per acre. For suppression of bacterial diseases of tomato, 8 oz. For late blight, tank-mix with a contact fungicide with a different mode of action. Pepper: Anthracnose at 8-10 fl. oz. REI: 12-hour. FRAC 11, FRAC 27. Bacterial Spot of Fruiting Vegetables - Xanthomonas Bacteria Lesions of this disease can be found on leaves, stems, and fruit of eggplants, peppers and tomatoes. But, it is rarely a problem for eggplants. Sanitize machinery, seedlings, and plant production materials (transplant trays, greenhouse benches, and wooden stakes) with a disinfectant such as 10% chlorine bleach or a quaternary ammonium compound solution. While still in the greenhouse, scout and apply fixed copper alternated with streptomycin (Agri-mycin, Firewall, Streptrol). Once in the field, apply fixed copper product tank- mixed with mancozeb on 7-10 day schedule, depending on disease pressure, beginning within 1 week after transplanting. Airblast sprayers with high fan speed can make an outbreak worse by sandblasting plants with droplets and opening many small wounds that become infected. Copper Resistance: Strains of the bacterium that cause bacterial spot on tomato that are resistant to copper products are common in the Midwest. Actigard, streptomycin products, mancozeb products, Tanos, and Serenade used as labeled may help manage copper-resistant strains. Non-Pesticide Eggplant, Pepper, Tomato | Use disease-free seed and transplants. Hot water seed treatment may reduce this seedborne disease. Use temperatures and times of 122 F for 25 minutes for eggplants and tomato, and 125 for 30 minutes for pepper. Practice good greenhouse sanitation of equipment, tools propagation trays/pots, and surfaces. Avoid fields with a history of the disease and rotate to non- Solanaceous crops for 2-3 years. Stake and mulch the crops to improve air flow and reduce splashing. Avoid working in wet fields. Prompt destruction of the finished crop with tillage to rapidly breakdown tissue is an important method to prevent disease build-up. Pesticide Actigard (0.5WDG) (acibenzolar-s-methyl) Pepper, Tomato | 0.3-0.75 oz. per acre. Begin season with lower rates and increase as plant canopy increases. Do not exceed 6 oz. per season. REI: 12-hour. PHI: 14-day. FRAC P01. copper products (copper hydroxide, copper octanoate, copper oxychloride, copper sulfate, copper diammonium diacetate complex, cuprous oxide) Pepper, Tomato | Several

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