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2022 Midwest Vegetable Guide

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Celery – Horticulture 88 Sandea (75) (halosulfuron) POST PRE | 0.5-1.5 oz. per acre. Apply before, during, or after harvest. Drop nozzles and using COC or NIS are recommended for applications after harvest. For first year transplants do not apply sooner than 6 weeks after fern emergence. Do not exceed 2 applications per crop cycle, or 2 oz. per acre per 12-month period. Has residual soil activity. Effective on nutsedge. REI: 12-hour. PHI: 1-day. HRAC 02. Sinbar WDG (80) (terbacil) POST PRE | 0.62- 1.5 lbs. per acre. Established crowns or direct-seeded crops only. Do not use on sandy soil or on soil with less than 1% organic matter. Established crowns: Apply in spring after cutting fern and prior to spear emergence. May also be applied after a clean cutting. Seeded crops: At planting spray activated charcoal at 300 lbs.per acre of actual area treated in a 1-inch band over the row (equivalent to 15 lbs. per acre of crop with 20-inch row spacing), then apply Sinbar. Do not plant other crops within 2 years of application. 8-12 weeks residual activity. REI: 12-hour. PHI: 5-day. HRAC 05. Solicam DF (78.6) (norflurazon) PRE | 2.5-5 lbs. per acre. Established plantings only. Do not apply within 12 months of planting. Apply preemergence to soil free of weeds and debris. REI: 12-hour. PHI: 14-day. HRAC 12. Spartan 4F (sulfentrazone) PRE | 4.5-12 fl. oz. per acre. Michigan only - applicators must have a supplemental label. Apply in spring before crop emerges. Use low rate on light soil. Do not use on soils with less than 1% organic matter. Do not exceed 1 application and 12 fl. oz. per acre per season. REI: 12-hour. PHI: 14-day. HRAC 14. Stinger (3) (clopyralid) POST | 8-10.7 fl. oz. per acre. Apply before or during harvest. May cause some crooking of spears. Controls Canada thistle, marestail, mayweed, nightshade, plantain, smartweeds. Do not exceed 10.7 fl. oz. per acre per year. Avoid application 2 years in succession. REI: 12-hour. PHI: 2-day. HRAC 04. trifluralin products (trifluralin) PRE | Established plantings only. Use 4EC formulations at 2-4 pts. per acre. Use 10G formulations at 10-20 lbs. per acre. Use lower rates on coarse soils. Apply and incorporate 1-2 inches early in the spring when spears are at least 4 inches below soil surface. See product label for split application instructions. 4-6 weeks of residual activity. REI: 12-hour. HRAC 03. Celery – Horticulture Major update by Ben Phillips, Liz Maynard, Ben Werling – Oct 2020 Reviewed by Liz Maynard – Aug 2021 Crop Description Commercial celery (Apium graveolens) production in the United States began in Michigan in the 1800s. Numbered commercial varieties are maintained by a small breeding effort supported directly by the largest growers of the commodity. Other seed sources are available for smaller- scale growers, and include bushier thin-stalked types, and taller thick-stalked types. The standard green varieties can be blanched to maintain a lighter white color of the inner stalks through soil-hilling or by dense plant spacing. There are also red varieties. Seeds are produced in the second year of production if plants are overwintered under mulch. Planting and Spacing Celery seed is small and difficult to germinate, thus all commercial celery is planted from greenhouse-grown transplants produced in plug trays using peat-based media. Allow 8 to 10 weeks for transplant production. In early February, seeds are sown in greenhouses and are ready for transplanting to the field in about eight weeks. Transplanting begins 6 to 8 weeks before last frost, and ends 6 to 8 weeks after last frost. Schedule planting so that a uniform quantity of celery is ready to harvest every week. Using transplants instead of direct seeding ensures uniform stands and faster maturing crops. Often, succession plantings are started every three weeks. Harden off transplants by reducing water, not temperature. Celery is a cool-season crop that produces best at temperatures of 60° to 80° F. Plants can withstand light frosts, but prolonged frosts below 28° F will cause damage. Plants may form seed stalks (bolt) if exposed to temperatures below 55° F for 7 days or longer. Traditionally, celery has been grown on muck soils, but it can be grown on coarse-textured mineral soils. Regardless of soil type, high fertility and moisture are necessary for tender succulent stalks. Rotate celery with crops such as onions or corn whenever possible to avoid building up pests in the soil. At the end of the season, consider planting a winter cover crop of barley or rye to reduce erosion and add active organic matter to the soil. Typical spacing for celery is rows 2 feet apart with plants 6 inches apart in row. One plant per square foot. Midwest Veg Guide 2022

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