Economic thresholds – Helicoverpa in pulses

Enter your row spacing in cm and an estimate of:

  • control cost per hectare (include both product and application)
  • crop value per tonne

to receive a break even threshold (where the benefit in saved yield is equal to the cost of the control measure) expressed in number of larvae/m2.

Note: This threshold assumes a population of one larvae per square metre will cause a yield loss of 35 kg/ha for mungbeans and 40 kg/ha in soybeans.