Horticulture Resources
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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.
Christopher Todd Tyson, Jason D. Edenfield, Aubrey Shirley, Derrick Bowen, Denny R. Thigpen, Chase Watts, Nick Ray, Steven Powell, Savannah Tanner, Ross Greene, Lauren Stanley, Daniel L. Jackson, Ted McAvoy, Manisha Kumari, and Jason Lessl
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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.
Christopher Todd Tyson, Jason D. Edenfield, Aubrey Shirley, Derrick Bowen, Denny R. Thigpen, Chase Watts, Nick Ray, Steven Powell, Savannah Tanner, Ross Greene, Lauren Stanley, Daniel L. Jackson, Ted McAvoy, Manisha Kumari, and Jason Lessl
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Vidalia onion production requires a significant amount of manual labor since transplanting and harvesting are performed primarily by hand. To measure the impact of possible hand transplanting inconsistencies, an experiment was conducted at the UGA Vidalia Onion and Vegetable Research Center. Properly transplanted seedlings showed the best growth and yield, with the highest leaf count and bulb population. Treatments simulating poor transplanting conditions showed reduced growth, higher mortality rates, and lower yields.
Luan Oliveira, Regimar Garcia dos Santos, and Christopher Todd Tyson
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The University of Georgia 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 52 varieties entered into the 2021–2022 UGA onion variety trial.
Christopher Todd Tyson, Ted McAvoy, Jason D. Edenfield, Aubrey Shirley, Derrick Brown, Denny R. Thigpen, Daniel Clark, Steven Powell, Savannah Tanner, and Ross Greene
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This study aimed to determine the effect of biodegradable mulch on Vidalia onion bulb yield in three sweet onion cultivars.
Juan Carlos Diaz-Perez and Christopher Todd Tyson
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This study looked at the relative availability of sulfur from various soil profile depths by growing onions on raised beds with differing depths to the claypan and varying sulfur content.
Daniel L. Jackson, Jason Lessl, Matthew Levi, Timothy Coolong, and Christopher Todd Tyson
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Understanding nitrogen requirements of onions at different growing stages is crucial to adequately manage N fertilizer applications and enhance fertilizer use while minimizing nutrient losses. In this study, the fertilizer N use efficiency of onions was investigated. The application of N fertilizer right after transplant is inefficient; targeting the periods of heavy vegetative growth and bulb initiation was most efficient in providing N fertilizer for onion plants.
Hanna de Jesus, Bhabesh Dutta, and Timothy Coolong
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The objectives of this study were to quantify the efficiency of field workers in transplanting Vidalia onions at an approximate population of 95,000 seedlings per acre and to verify the consistency of transplanting. The quality of transplanting varied widely among field workers, with issues such as seedlings lying on the ground, partially transplanted seedlings, and multiple seedlings in a single furrow. These inconsistencies can negatively impact plant population and uniformity.
Luan Oliveira, Regimar Garcia dos Santos, and Christopher Todd Tyson
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Satsumas are one of the most cold-hardy of all citrus and very adaptable to Georgia, but very little is known about growing citrus in Georgia. Commercial growers and residents often ask which early-maturing varieties are best to grow, so we evaluated juice from 12 early-maturing satsuma varieties. The varieties with the highest Brix content and best peel color are listed in this resource.
Jake Price, Mary Sutton, Joshua Dawson, and Jacob Kalina
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