By Esther Kibbe
Western New York Berry Specialist, Cornell Cooperative Extension
Thirty growers and extension professionals spent three days in February learning about growing strawberries in soil-less (substrate) production systems. The workshop was held in Ithaca and funded by the NYSBGA and organized by the association and Cornell extension and professors.
In-depth lectures in the mornings were followed by greenhouse tours and hands-on activities in the afternoons. The workshop was taught by Dennis Wilson of Delphy, a UK- and Netherlands-based agronomy and education company. His many years of experience working with strawberry substrate growers made him confident in his recommendations of types of containers, substrate mixes, irrigation rates, and fertility protocols.
Dennis noted that almost all strawberry production in the UK has moved to substrate systems, but the fruit-quality improvement means that more than 90 percent of strawberries in the stores are grown in the UK, compared to 50 percent 25 years ago. While converting to substrate production isn’t for everyone, growers in Europe find that in addition to better-quality fruit, they are able to increase yields, harvest efficiency, and attract more labor, compared to soil-bases systems.
Cornell’s horticulture professor Neil Mattson and his team put together a great practical portion for the workshop, using plants and systems set up for graduate student Jonathan Allred’s research on strawberries’ light requirements. Workshop participants practiced measuring “drip” and “drain,” electrical conductivity, pH, and moisture levels in the substrate. There were samples of different types of substrate and media to touch and compare and plants and runners for planting demonstrations—and a chance for growers to try it themselves.
About half of the workshop participants had no experience growing crops in substrate, and the rest had experience ranging from one year to thirty years. All reported that they found the content relevant, and most said they would continue or start growing berries in substrate in the future. One participant commented, “This program was excellent and answered many questions I have been asking for years. Really appreciate the handouts and the clear presentation style, and the time and patience spent on questions.” Participant feedback was extremely positive overall, and most are looking forward to future trainings and tours related to substrate production.
