Calculators

This calculator estimates the net gains for insecticidal seed treatments for control of aphids and viruses in pea. It estimates the anticipated benefits of the application in terms of economic returns, subtracts the cost of the seed treatment, and predicts a qualitative estimate of the return.

This calculator estimates net return for insecticide applied as a foliar spray during the first 4 weeks following crop emergence to control colonizing aphids that arrive positive for pea plant viruses. Specifically, it calculates the anticipated benefits of foliar sprays to fields planted with and without protective insecticidal seed treatments, subtracts the cost of the foliar spray, and expresses net return as qualitative categories.

This calculator is designed to estimate the pea aphid density (aphids per plant) at which a control action should be taken in order for the producer to break-even on their investment of a control action (purchasing and applying insecticide).

The Aphid Sampling Calculator, or Binomial Sequential Sampling Plan, for pea aphids on dry peas is designed to quickly designate a pea aphid infestation as economic or non-economic. Users may either use our online digital calculator, or print a paper form.