How to Manage Pests

UC Pest Management Guidelines

Dry Beans

Monitoring During Pod Fill

(Reviewed 12/08, updated 12/08)

In this Guideline:

During the period of pod fill, continue sweep sampling for lygus bugs twice weekly. Use the table below and the photo identification page to help identify pests and pest damage.

What the problem looks like: Check for: Possible cause(s):
collapsed, wilting, stunted, or dying plants watery rot on stems, leaves, and pods; white webbing; tiny black kernels (sclerotia) stuck to infected plant; yellow flagging white mold
yellowing leaves; brown discoloration inside root and stem (seen when cut open) Fusarium wilt (blackeyes)
leaf senescence and defoliation cutout (blackeyes) early decline (common, limas)
damaged pods distorted pods; pitting and blemishing on seeds stink bugs lygus
leaves with holes; skeletonized leaves presence of mottled, olive-green to almost black caterpillars; or, black caterpillars with prominent yellowish stripe and several bright stripes on each side armyworms
presence of green caterpillars that arch back when crawling loopers
presence of hairy caterpillars saltmarsh caterpillar
leaves with mines slender, winding trails or large, whitish blotches leafminer
leaves with spots irregularly shaped spots bordered by a lemon-yellow ring; dead brown tissue in center of larger spots common bacterial blight
leaves with stippling very fine stippling (yellow or white); fine webbing on leaf undersurface spider mite
white stippling on upper leaf surface; tiny, dark, varnishlike spots and small, white cast skins on lower leaves leafhopper



[UC Peer Reviewed]

UC IPM Pest Management Guidelines: Dry Beans
UC ANR Publication 3446

General Information

W. M. Canevari, UC Cooperative Extension, San Joaquin County
C. A. Frate, UC Cooperative Extension, Tulare County
L. D. Godfrey, Entomology, UC Davis
P. B. Goodell, UC IPM Program, Kearney Agricultural Research Center, Parlier
R. F. Long, UC Cooperative Extension, Yolo County
C. J. Mickler, UC Cooperative Extension, Stanislaus County
S. C. Mueller, UC Cooperative Extension, Fresno County
J. L. Schmierer, UC Cooperative Extension Colusa County
S. R. Temple, Plant Sciences,UC Davis

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