Disease Control
White Mold.
Preplant. The following biological fungicide has been tested in some states; however, limited information is available on effectiveness in the Mid-Atlantic region. Apply 3-4 months prior to the onset of disease to allow the active ingredient to reduce the inoculum levels of sclerotia in the soil. Following application, incorporate to a depth of 1 to 2 inches but do not plow before seeding beans to avoid untreated sclerotia in lower soil layers from infesting the upper soil layer.
Contans--2-4 lb 5.3WG/A
Fusairium Wilt.
Use resistant varieties.
Damping-Off and Root Rot.
Rotate to allow 4 to 5 years between pea plantings. Do not double crop with any type of bean. For damping-off and root rot caused by Pythium, apply the following as a broadcast treatment at seeding.
Ridomil Gold--O.5-1 Pt 4E/A(Pythium only) or
azoxystrobin (Amistar at 0.125-0.25 fl oz 80WDG/1000 ft of row or Quadris at 0.4-0.8 fl oz 2.08F/1000 ft of row).
Viruses.
Use resistant varieties when possible and control aphids.
Bacterial Blight.
Plant clean seed and use resistant varieties. Avoid walking through fields when vines are wet.
Ascochyta Blight.
Use fungicide treated seed. Follow a crop rotation scheme that provides at least 2 years without peas. Deeply incorporate crop debris immediately after harvest before the fungus can be dispersed by wind or rain. In fields with a history of blight apply preventatively:
azoxystrobin (Quadris--6.2 - 15.4 oz 2.08F/A or Amistar--2-5 oz 80WDG/A, or
Headline--6-9 fl oz 2.1IEC/A
Information provided is intended for consideration by the user, but is not intended to be a recommendation. Production decisions should be based on consideration of many types of information (scientific, experiential, economic, legal, etc.) available to the user.
Where trade names are used no discrimination is intended, and no endorsement by the Cooperative Extension Service is implied.
Dr. Alan A. MacNab, Professor, Plant Pathology
Penn State College of Agricultural Sciences
211 Buckhout Lab, University Park, PA 16802
Updated: Nov, 2005; EMH
Loaded: Nov, 2005; EMH