Sweet corn is a major fresh-market crop throughout the Southeast, but producers often face variable spring weather, fluctuating temperatures, and diverse soil conditions that can affect stand establishment and ear development. The study assessed numerous commercially available varieties to better understand how genetic type and environmental conditions influence productivity and harvest characteristics.
Researchers measured key yield attributes including plant vigor, ear size, kernel fill, marketable ear number, and overall yield. Differences were observed among color classes as well as among individual cultivars within each group. While all color types demonstrated potential for successful production, individual variety performance varied considerably, underscoring the importance of careful cultivar selection rather than relying solely on the kernel color category.
The research also evaluated maturity timing and uniformity. Some varieties produced earlier harvests, providing an advantage for early-season markets, while others produced higher total yields over a longer harvest window. Uniform ear development was a critical factor influencing marketability, particularly for wholesale and roadside stand sales.
Environmental conditions played a significant role in yield outcomes. Temperature fluctuations during early growth affected stand establishment, while weather during pollination influenced kernel fill and ear quality. Varieties differed in their ability to maintain productivity under these stresses, indicating that genetic tolerance to regional conditions is a key consideration for Southeastern growers.
In addition to yield quantity, the study assessed market traits such as ear length, tip fill, and overall appearance. Varieties producing consistent ear size and strong kernel development were more likely to meet fresh-market standards. The findings help growers align cultivar choice with specific marketing channels, including direct-to-consumer sales, local retail, and wholesale distribution.
The research provides a regionally focused resource to support production planning. By selecting varieties with proven performance under Southeastern spring conditions, growers can improve stand reliability, maintain consistent harvest schedules, and reduce economic risk.
Together, the two studies deliver one of the most detailed evaluations of sweet corn variety performance in the region, offering practical decision-making tools for producers seeking to maximize yield, quality, and profitability in spring production systems.
According to Dr. Kumari, " The objective of this research was to provide southeastern growers with up-to-date varietal information, particularly identifying which sweet corn varieties perform best across the three market segments (bicolor, white, and yellow) under regional growing conditions."
Dr. Kumari is Postdoctoral Research Associate in the Department of Horticulture, University of Georgia.
Co-authors include Dr. Ted McAvoy, Dr. Camille McAvoy, Dr. Angelos Deltsidis, and Bob Brooks.
The full article can be read on the ASHS HortTech electronic Journal website at: https://doi.org/10.21273/HORTTECH05738-25 and https://doi.org/10.21273/HORTTECH05818-25
Established in 1903, the American Society for Horticultural Science is recognized around the world as one of the most respected and influential professional societies for horticultural scientists. ASHS is committed to promoting and encouraging national and international interest in scientific research and education in all branches of horticulture.
Comprised of thousands of members worldwide, ASHS represents a broad cross-section of the horticultural community-scientists, educators, students, landscape and turf managers, government, extension agents and industry professionals. ASHS members focus on practices and problems in horticulture: breeding, propagation, production and management, harvesting, handling and storage, processing, marketing and use of horticultural plants and products. To learn more, visit ashs.org.
