Nature’s army: Using functional biodiversity for biocontrol in orchards, with Dr Mary Retallack

Dr Mary Retallack is an agricultural scientist, third-generation viticulturist and agroecologist who has spent more than three decades advancing environmental stewardship within agricultural landscapes. She grew up on a fruit block in SA's Riverland growing grapes, apricots and pears, and now lives on a small vineyard and apple orchard surrounded by native insectary plants in the Adelaide Hills.Mary is the founder and custodian of the award-winning National EcoVineyards Program, working in collaboration with more than 175 program partners and wine growers across fifteen regions in four states to build functional biodiversity, restore soil health, and reduce reliance on synthetic inputs.Mary’s PhD research in viticulture and plant protection focused on native insectary ground cover plants and the role they play in supporting natural predators of vineyard pests. Her findings show how functional diversity not only builds ecological health, but delivers economic benefits to growers, and there are heaps of detailed case studies from growers around the country on the EcoVineyards website.If you’re involved in perennial horticulture, check out our new Orchard Resilience Project. With funding from the Australian Government’s Climate-smart Agriculture Program, we’re working over the next three years with perennial horticulture growers across Australia to strengthen soil health and landscape function in tree and vine crops.Links and resources:EcoVineyards ProgramRetallack EcologySoils for Life Orchard Resilience ProjectJohn Kempf’s Plant Health PyramidIf you have feedback, questions, or suggestions for future episodes or guests, we'd love to hear from you - reach out on social media or at info@soilsforlife.org.au.