Research resources Knowledge Base 52 Climate Actions Research Handbook International Research Network National Permaculture Library Our Research projects GROW Citizen Soil Observatory Permaculture Enterprise Project (KEEP) 10 year Forest Garden Research Project Soil, yield and biodiversity tests project Bradford University Volunteers Programme Research Briefings Three sisters polyculture experiment 2019 The GREAT GROW Experiment 2018 Soybean UK growing trial 2014 Mixed veg polyculture trial 2011