Example 3: Spraying at 100L/ha with 3000ha to spray: Using a 4000L main spray tank: 100L/ha x 3000ha = 300,000L of mixed product: -300,000L ÷ 4000L per tank = 75 loads; - travel time to and from fill point = 0.4 of an hour x 75 loads = 30 hours @ 79.2ha/h = 2376ha lost productivity travelling to and from fill point;