Correctly identifying problems will help gardeners avoid using pesticides on their plants unnecessarily, Beckerman said.
"Not every problem needs a pesticide to manage it," she said. "But when they are needed, we always start with the least toxic approach, and we try to recommend common varieties that are more resistant to certain problems. Sometimes, switching varieties is all that is needed. But for some people, they have to grow Brandywine or Speckled Roman, which may require a bit more protection."
Beckerman also pointed out that not all insects are bad and need to be eliminated. The app makes that distinction.
TomatoDoc_Pest
A screen shot from the Tomato Doctor app shows users the brown marmorated stink bug, a pest, on a tomato. (Purdue Agricultural Communication graphic
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"We included some common beneficial insects so growers don't mistake a helpful insect for a harmful one," she said.
The app is available for 99 cents at these stores:
* iTunes: https://itunes.apple.com/us/app/purdue-tomato-doctor/id887422661?mt=8
* Google Play: https://play.google.com/store/apps/details?id=edu.purdue.ceris.doctor.tomato
The device is the fourth "Doctor" app developed by Purdue Extension specialists. Preceding it were the Tree Doctor, Annual Flower Doctor and Perennial Flower Doctor apps.
Source: Purdue University