Response
The Resource Optimization in Controlled Environment Agriculture project completed research and outreach to solve practical problems to improve the efficiency of aquaponic and hydroponic production. The use of recirculating fish water and digested fish solids were found to be an acceptable nutrient source for leafy greens, however some reductions in yield were noted vs. conventional hydroponics. Amending fish waste with a small amount of mineral nutrients improves productivity and allows for waste re-use. Greenhouse supplemental lighting with LEDs was found to significantly reduce energy use (by 40% or more) while maintaining crop productivity. Extension activities included an annual online aquaponics short-course, tours to students, and presentations to school groups and industry members. Stakeholders include schools (students and teachers) and farms that produce in hydroponics/aquaponics.
Results
The project activities resulted in research-based information that our stakeholders can use to produce more successful high-value, high-nutrient density crops out of season. Specifically, the Resource Optimization in Controlled Environment Agriculture project developed strategies for organic hydroponics and aquaponics nutrient management, recommendations on adopting energy efficient LED lighting, and cultural guidelines diverse aquaponic crops: leafy greens (arugula, butterhead lettuce, romaine lettuce, and kale), basil, and strawberries. Over a three-year period, our outreach efforts included 31 in-state and 28 out-of-state workshops, presentations, and webinars during the reporting period. This resulted in the training of 2,373 New York State participants and 2,248 out-of-state participants. Participants represent aquaponics, hydroponics, and greenhouse industry members, extension educators, Master Gardeners, schoolteachers, and middle-school and high-school teachers.
Public Value
Due to their high-density (land efficient) production methods, aquaculture, aquaponics, and hydroponic operations are frequently located in urban areas where employees are frequently minorities. Urban/sub-urban schools o en use aquaponic/hydroponic systems in their classrooms because they can take up little space (either fitting in classroom or greenhouse) and allow hands-on activities with students. Products from these operations can also address hidden hunger (i.e. meeting vitamin and mineral needs rather than caloric needs) in underserved communities. The Resource Optimization in Controlled Environment in Agriculture project promotes sustainable agriculture and education related to aquaponics, and hydroponics. By leveraging high-density production methods, often in urban areas with minority employees, this project not only enhances economic opportunities but also addresses food insecurity through the cultivation of nutritious crops. The establishment of aquaponic nutrient management guidelines for various produce types underscores our dedication to research-driven solutions. Additionally, our hands-on assistance to schools and community groups fosters experiential learning and engagement, reinforcing Cornell Cooperative Extension’s role as a vital resource for promoting sustainable food systems and addressing societal needs.
