John Cisar may not be know to many Australians however John has had a distinguished career been in turf management at a university level He is now a retired professor from University of Florida. His knowledge is first class and has been on the board of the International Turfgrass Society. His expertise is broad including nutrition, wetting. Agents, water quality, turfgrass physiology and plant Heath product evaluations. We have general chat about the industry. I hope you enjoy. John can be found on twitter @CisarTurfDoc