Onions 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 50 varieties entered into the 2022–2023 UGA onion variety trial.
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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.
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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.
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This study aimed to determine the effect of biodegradable mulch on Vidalia onion bulb yield in three sweet onion cultivars.
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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.
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This study examined the extent of variability in soil properties across the Vidalia production region and how those differences are related to onion yield and pungency. While soil characteristics, like claypan depth, clearly play a major role in onion productivity and flavor profile, soil series classification alone is not sufficient to describe how soil characteristics influence onion yield and pungency. Further research is needed.
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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.
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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.
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Bacterial diseases are among the major production and economic challenges that onion growers face in Georgia. There are six bacterial diseases that commonly affect onion foliage and bulbs in the state. These diseases are difficult to manage and rely mainly on cultural practices and the use of protective bactericides. Host resistance is limited with little information on pathogen biology and the infection process. This bulletin provides a comprehensive outlook on specific symptoms associated with bacterial diseases, modes of infection and spread, and potential management options.
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