Diagnosing a plant problem when there are no apparent biotic (disease pathogen or pest) causes can present a real challenge. An abiotic plant problem is not caused by any disease organisms or insects. An accurate diagnosis, whether biotic or abiotic, involves both science, (botany, entomology, and pathology) and art (strategy, investigation, and decision making). Abiotic problems can be very difficult to diagnose because they include site conditions, weather, and cultural practices. Below are some common abiotic or environmental problems of vegetables. Click on a title for more information.
A large percentage of plant problems are primarily caused by abiotic factors. Symptoms can mimic disease and insect problems, leading homeowners to the wrong conclusion about the cause of the problem.
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(PDF) HG 59 - IPM Series: Eggplant
(PDF) HG 57 - IPM Series: Peppers
(PDF) HG 55 - IPM Series: Potatoes
(PDF) HG 56 - IPM Series: Tomatoes