New research by horticulturalists at the University of Georgia provides key insights into optimizing southern highbush and rabbiteye blueberry production, addressing the impact of soil potassium levels on leaf nutrient uptake and the role of photoselective devices in boosting productivity. These findings offer practical strategies for improving blueberry yield and quality in commercial cultivation.
The first study examines the relationship between soil potassium levels and leaf potassium concentration in rabbiteye and southern highbush blueberries. Results indicate that increasing soil potassium does not necessarily lead to higher potassium uptake in leaves, suggesting that growers may need to reconsider fertilizer application strategies to avoid unnecessary inputs without yield benefits.
© University of Georgia
The second study evaluates the effectiveness of photoselective devices in enhancing blueberry productivity. Researchers found that modifying light conditions using these technologies resulted in improved fruit development and overall yield, demonstrating the potential of light management techniques in controlled cultivation environments.
Together, these studies provide actionable insights for blueberry growers looking to refine nutrient management practices and leverage advanced technologies to maximize crop performance. By optimizing fertilization strategies and integrating photoselective solutions, producers can improve efficiency, reduce waste, and enhance the sustainability of blueberry farming.
Dr. Ames is Assistant Professor and Small Fruit Extension Specialist at The University of Georgia. Her research program focuses on increasing the efficiency of the production system by improving production management practices. Updating fertilization guidelines for the blueberry industry in Georgia is one area of research program. Improving fertilization practices will allow farmers to have a more efficient and sustainable production system.
The phoselective devices publication was part of Amit Godara's MS thesis, partnered with Opti-harvest to test their technology as a replacement for grow tubes.
The K publication is part of PhD student, Natalia Espinoza's dissertation. The blueberry industry in Georgia hasn't updated blueberry fertilization guidelines since 1990, and with new southern highbush varieties being planted, fertilization management and nutrient sufficiency ranges need to be updated.