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2022 Midwest Vegetable Guide

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Fruiting Vegetables – Diseases 150 Midwest Veg Guide 2022 transplanting in the field. For Pythium and Rhizoctonia spp. use 12-18 oz. per 100 gals. water. Do not apply on seedlings meant for transplanting in the field. REI: 12-hour. PHI: 0- day. FRAC 07, FRAC 11. Priaxor (fluxapyroxad, pyraclostrobin) Eggplant, Pepper, Tomato | 6-8 fl. oz. per acre. Late blight, 8 fl. oz. per acre. Gray mold and white mold suppression only. REI: 12-hour. PHI: 0-day. FRAC 07, FRAC 11. Quadris Opti (SC) (azoxystrobin, chlorothalonil) Pepper, Tomato | 1.6 pts. per acre. REI: 12-hour. PHI: 0-day. FRAC 11, FRAC M05. Quadris Top (SC) (azoxystrobin, difenoconazole) Tomato | 8 fl. oz. per acre. REI: 12-hour. PHI: 0-day. FRAC 11, FRAC 03. Quadris Top (SC) (azoxystrobin, difenoconazole) Tomato | 8-14 fl. oz. per acre. REI: 12-hour. FRAC 11, FRAC 03. Regev (tea tree oil, difenoconazole) Eggplant, Pepper, Tomato | 4-8.5 fl. oz. per acre. REI: 12-hour. PHI: 2-day. IRAC UNE, FRAC 46, FRAC 03. Revus Top (SC) (mandipropamid, difenoconazole) Tomato | 5.5-7.0 fl. oz. per acre. Do not use on small-fruited varieties. REI: 12-hour. PHI: 1-day. FRAC 40, FRAC 03. Rhyme (2.08SC) (flutriafol) Pepper, Tomato | Rates for pepper are 7 fl oz. per acre for anthracnose. Tomato rates are 5-7 fl.oz. for anthracnose and 3.5-7 fl oz. per acre for early blight. REI: 12-hour. PHI: 0-day. FRAC 03. 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 Canker of Fruiting Vegetables - Clavibacter Bacteria The bacterium becomes systemic in the plant, causing wilt and leaf/fruit/stem lesions. It can occur on tomato and pepper, but is mainly a problem on tomato. 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. Inspect seedlings for disease and discard any flats containing diseased seedlings as well as flats bordering any with diseased seedlings. Non-Pesticide 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 3-4 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 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 Speck of Fruiting Vegetables - Pseudomonas Bacteria Lesions of this disease can be found on leaves, stems, and fruit of 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, AG Streptomycin). 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 speck on tomato and Pseudomonas leaf spot on pepper that are resistant to copper products occur in the Midwest. Actigard, streptomycin products (transplant production in greenhouses only), mancozeb products, Tanos,

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