Seeding (CROP SOWING)
Oil Spill (SPRAYING DISPERSENTS)
Tips for using the Ground vs Air Calculator
As a general rule the more advanced the crop the greater the damage and the wetter the ground the greater the damage. When crops are more advanced the damage is multiplied, as the vehicle chassis tend to damage the crops as well as the wheels.
Damage will be greatest as tyre width increases and boom width decreases.
Crops often recover visually from being run over but often these areas lag behind the rest of the paddock and grain ripens later or not at all. Damage will obviously vary with crop type, crop stage and other variables but a rule of thumb seems to be an average of 40% damage (ie yield loss) to areas that are run over.
When calculating total machinery wheel width, don’t forget that if the front and rear types of the towing vehicle and the tyres of the spray unit don’t all run in the same wheel track, you will need to add these together. If they do run in the same wheel track, your total wheel track width will be less but the damage factor may be greater.
To convert feet to metres – multiply feet by 0.305
To convert acres to hectares – divide acres by 2.47