Example 2: Spraying at 80L/ha with 3000ha to spray Using a 4000L main spray tank: 80L/ha x 3000ha = 240,000L of mixed product: -240,000L ÷ 4000L per tank = 60 loads; - travel time to and from fill point = 0.4 of an hour x 60 loads = 24 hours @ 79.2ha/h = 1901ha lost productivity travelling to and from fill point;