During 2017 and 2018, 525 Japanese/European grafted chestnut trees were planted in Northeast Michigan where chestnut trees have not traditionally been grown; SARE grant FNC17-1081. Tree survival was 99%, terminal growth was 1-2 ft., and a trace amount of nuts were produced in fall 2018. In future years, the establishing chestnut trees will need fertilizer. Aged manure could be a very good fertilizer for establishing chestnuts because manure is likely to increase soil organic matter, provide macro and micro nutrients, increase moisture availability, and improve winter survival by insulating the ground. But manure has never been tested or evaluated as a soil amendment for establishing chestnuts according to Chestnut Growers of America and the Australian Nutgrower. Therefore, we propose an experiment where aged manure (~7 months) is applied around some trees and inorganic fertilizer recommended by Michigan State University is applied around remaining trees, comparing both tree health and soil outcomes. The project promotes sustainable, diversified agriculture by revealing options for enhancing chestnut orchard establishment and the feasibility of manure application to effectively manage manure and reduce inorganic fertilizer use. A blog, video, field day, and presentation at a nut growers meeting will disseminate results.
Project objectives from proposal:
- (1) Evaluate the feasibility of using aged manure in lieu of inorganic fertilizer during chestnut orchard establishment by evaluating tree survival, growth, nut production, and soil health.
- (2) Disseminate information regarding the feasibility of using aged manure in lieu of inorganic fertilizer during chestnut orchard establishment results through a blog, conference presentation, field day, and final report to SARE.