Research on maximizing crop yields and quality for sweet corn, onions, and tomatoes has revealed promising methods for improving agricultural productivity. Recent studies focus on precise management techniques that adapt inputs to enhance growth, quality, and economic returns.
Biochar’s Role in Sweet Corn Production
One significant study assessed the impact of combining biochar with various fertilizer sources on sweet corn growth. Conducted over two contrasting years, it highlighted how biochar can improve soil properties and nutrient retention, leading to enhanced nitrogen availability. Researchers observed that these factors collectively boosted crop performance. Notably, year-to-year weather variability emerged as a key determinant of overall yield and nutrient use efficiency.
The findings suggest that integrating biochar with an appropriate fertilizer program allows growers to optimize nutrient usage, reduce waste, and achieve more consistent yields annually.
Innovative Planting Strategies for Onions
In another study, researchers investigated how planting configurations and densities affect onion bulb size distribution and overall yield. The findings revealed that a twin-row, high-density planting approach significantly improved uniformity in bulb size and increased yield per acre, due to more effective space utilization. This new planting configuration not only enhanced crop quality but also increased the marketable yield.
While the twin-row arrangement did not surpass conventional planting densities in terms of marketable yield, it holds potential for growers targeting specific bulb sizes, particularly smaller onions.
Optimizing Tomato Growth with Biochar
A separate investigation examined the effects of different rates of biochar and fertilizer sources on tomato growth, mortality, yield, and economic returns. Researchers found that biochar reduced plant mortality rates and enhanced soil fertility, which positively influenced growth and yield when paired with the right fertilizer combination. This research offers valuable insights for growers, enabling them to optimize soil amendments while decreasing reliance on synthetic fertilizers, ultimately improving climate resilience in Coastal Plain soils.
Dr. McAvoy, an Assistant Professor of Horticulture and Vegetable Extension Specialist at the University of Georgia, is at the forefront of this research. His work encompasses all aspects of vegetable production in Georgia, with interests ranging from variety performance to disease resistance and alternative crops. Through his extension work, he provides practical, data-driven recommendations aimed at boosting productivity, sustainability, and profitability in the vegetable industry.
The complete articles detailing these studies can be accessed through the American Society for Horticultural Science (ASHS) HortTechnology electronic journal at the following links: [https://doi.org/10.21273/HORTTECH](https://doi.org/10.21273/HORTTECH), [https://doi.org/10.21273/HORTTECH05628-25](https://doi.org/10.21273/HORTTECH05628-25), and [https://doi.org/10.21273/HORTTECH05626-25](https://doi.org/10.21273/HORTTECH05626-25).
Founded in 1903, ASHS is a globally recognized professional society dedicated to the advancement of horticultural science. With thousands of members worldwide, ASHS represents a diverse cross-section of the horticultural community, including scientists, educators, and industry professionals. The organization is committed to fostering scientific research and education across all branches of horticulture. For more information, visit ashs.org.
