How to Manage Pests

Interactive Tools and Models: Dormant Spray Alternatives Calculator

| About the calculator | Calculator inputs | Spray alternatives |

This calculator* estimates the costs of using organophosphate (OP) dormant sprays and selected alternative practices. When compared to conventional OP dormant sprays, the alternatives listed in the calculator offer favorable levels of pest control efficacy with comparable ranges of cost, while affording a reduced risk of aquatic toxicity.

Select a crop:

A good monitoring program may indicate that no treatment is needed. If a treatment is warranted, select an alternative to determine cost:

1: Conventional dormant OP + oil spray   [Explain]
2: No dormant OP spray   [Explain]
3: Alternate-year dormant OP + oil application   [Explain]
4: Bloomtime Bt sprays   [Explain]
5: Spinosad + oil as a dormant spray   [Explain]
6: Conventional non-OP insecticide as a dormant spray   [Explain]
7: Pheromone mating disruption for peach twig borer, bloomtime Bt sprays   [Explain]
8: Pheromone mating disruption for peach twig borer, non-OP + oil as dormant spray  [Explain]

*This work was supported in part by the CALFED Bay-Delta Program and the California State Water Resources Control Board.

For noncommercial purposes only, any Web site may link directly to this page. FOR ALL OTHER USES or more information, read Legal Notices. Unfortunately, we cannot provide individual solutions to specific pest problems. See How to manage pests, or in the U.S., contact your local Cooperative Extension office for assistance. /WATER/OPCALC/ revised: May 4, 2004. Contact webmaster.