• $600 Ha• $100 Ha Fungicides (in wheat)• Gross margin -$100 Ha• Bad, Bad Experience• 1 year in 10 over 800mms rain
• Controlled Traffic with zero till can have 183kg/Ha yield advantage over controlled traffic with stubble mulching.• $40/Ha loss if $220/ton wheat.• Just spent $60/Ha on fungicides.• Downgrading losses.• Machinery wear and tear.• Easy decision BUT vital information missing.
Llewellyn and D’Emdens 2009 survey.• 82% Using No Till.• 90% Have used.• Of those who have used no till 13% reduced and 6% ceased.• 68% believe no till will lead to more disease.• No problem with adoption. Problem with retention.
Questions:What is the tipping point between costand benefits?When you reach the tipping point what isthe best management option?How quickly do the physical and biologicalproperties of soil change?How do we keep the good years good?