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Meet the team

George Russell
George Russell
Business Manager
Starting with Wilmar in 2011, George was initially employed as a Sales Agronomist, working with Plane Creek and Mackay growers. George holds a Masters of Agribusiness, specialising in sugarcane and related value chain projects. He became the Business Manager for AgServices in 2015. He supports the AgServices team and the service providers who deliver our liquid fertiliser and stockfeed products. George has previously worked in irrigation sales, Quality Assurance training and fertiliser extension services.

Tony Donnelly
Tony Donnelly
Stockfeed Customer Relationship Manager
Tony has worked in the Queensland stockfeed and liquid supplement industry since the 1970s and has extensive knowledge of the Australian livestock industry and the important role that supplements play in animal health. Tony is the key contact for our reseller network and offers technical support and training. Although he is based at the Sarina Distillery, Tony spends most of his time on the road visiting product resellers. He holds a Diploma of Applied Science Animal Production (Ruminate) and a Diploma of Rural Business (International Marketing).

Glauco Defendi
Glauco Defendi
Agribusiness Agronomist
Brazilian-born Glauco joined the AgServices team in April 2021 following a 14-year stint in New Zealand, where he was national sales manager for a biological liquid fertiliser company. Glauco holds a degree in international business and logistics and has spent the last several years honing a specialty in agriculture, soil biology and animal health. He’s passionate about working with farmers to maximise the effects of biological fertilisers to achieve healthier soil, crops and profit.

Brigette Tucker
Brigette Tucker
Customer Service and Administration Officer
Brigette joined Wilmar AgServices in early 2021 as a Customer Service and Administration Officer. She is one of the first points of contact for our AgServices customers and handles all new customer applications. Brigette works across both our stockfeed and fertiliser product lines, assisting the team as needed and liaising with contractors. Prior to joining Wilmar, Brigette worked in hospitality, retail and administration roles and has completed a Certificate III in Business Administration.

Jacob Snyman
Jacob Snyman
Agribusiness Agronomist
A key member of our liquid fertiliser team, Jacob is passionate about sustainable agriculture, crop health and soil condition. He grew up on a cropping farm in rural South Africa and holds a Bachelor of Science in Agriculture from the University of the Free State. He migrated to Australia from South Africa in 2021 to join the AgServices team. Jacob has more than nine years’ experience in the fertiliser industry, working as an agronomist, agriculturist and sales agent. He enjoys being part of the agricultural industry and looks forward to immersing himself in the Queensland farming community.

Tina O’Hare
Tina O’Hare
Senior Customer Service Officer
Tina has been with Wilmar AgServices for nearly a decade and was promoted to Senior Customer Service Officer in 2021. She leads the AgServices administration team and her day-to-day work includes liaising with fertiliser contractors, processing orders and undertaking administration services for the business. Having moved to Sarina 11 years ago, Tina has worked across several roles within Wilmar. She also chairs the BioEthanol Environmental Health and Safety Committee meetings. Prior to joining Wilmar, Tina held various roles for a company that specialised in apprenticeship and traineeship training.