Onions Resources
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This comprehensive resource was fully revised in 2025-26 and represents the latest information available on the commercial production of short-day onions in south Georgia.
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This is an annual report (PDF) highlighting research conducted on Vidalia onions in recent years. Research topics include: variety trials, irrigation and fertilizer strategies, sulfur content in soils, effect of fertilizers on yield, thrips, factors affecting postharvest incidence of bacterial bulb rot, and Botrytis leaf blight. To read or download individual articles, refer to the report series.
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This publication summarizes the Vidalia onion flavor analysis results from the 2024–2025 growing season and compares the performance of each variety over the past three growing seasons.
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UGA evaluates short-day onion varieties to determine their performance characteristics in standardized growing practices. Variety entries for the trial are submitted by participating seed companies. These trials are conducted at the Vidalia Onion and Vegetable Research Center located in Lyons, GA. There were 49 varieties entered into the 2024–2025 UGA onion variety trial.
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This publication summarizes the flavor analysis results of Vidalia onion trials from the 2021–2022 growing season, as well as compares the performance of each variety over the past three growing seasons.
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This publication summarizes the Vidalia onion flavor analysis results from the 2023–2024 growing season, and compares the performance of each variety over the past three growing seasons. There were 53 varieties entered into the 2023–2024 UGA onion variety trial.
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UGA evaluates short-day onion varieties to determine their performance characteristics in standardized growing practices. Variety entries for the trial are submitted by participating seed companies. These trials are conducted at the Vidalia Onion and Vegetable Research Center located in Lyons, GA. There were 53 varieties entered into the 2023–2024 UGA onion variety trial.
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This publication summarizes the flavor analysis results from the 2022–2023 growing season and compares the performance of each variety over the past three growing seasons.
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UGA evaluates short day onion varieties to determine their performance characteristics in standardized growing practices. Variety entries for the trial are submitted by participating seed companies. These trials are conducted at the Vidalia Onion and Vegetable Research Center located in Lyons, GA. There were 50 varieties entered into the 2022–2023 UGA onion variety trial.
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