beans 4-24-12 CLEAN - Vegetableipmasia.org

ORGANIC SNAP BEAN PRODUCTION
Table 13.0 Pesticides Labeled for Organic Bean Insect Control
European Corn
Borer
Mexican Bean
Beetle
Potato
Leafhopper
Seedcorn
Maggot
Two-­‐Spotted
Mite
Tarnished
Plant Bug
Cedar Gard (cedar oil) X X X X
Garlic Barrier (garlic juice) X X X X X
Glacial Spray Fluid (mineral oil) X X X
Golden Pest Spray Oil (soybean oil) X X X X
Omni Supreme Spray (mineral oil)
X
Organic JMS Stylet Oil (paraffinic oil) X X
Organocide (sesame oil)
X
PureSpray Green (petroleum oil) X X X
SuffOil-­‐X (petroleum oil) X X X
OTHER
Micro Sulf (sulfur)
X
M-­‐pede (potassium salts of fatty acids) X X X
Sil-­‐Matrix (potassium silicate)
X
SucraShield (sucrose octanoate esters) X X
Surround WP Crop Protectant (kaolin) X X
Trilogy (neem extract)
X-­‐labeled for use in NYS and also listed on the Organic Materials Review Institute
X
13.1 Mexican Bean Beetle
Time for concern: June through September
Key characteristics: Adults are 1/4 -1/3 inch long, convex, and oval /in form. They vary in color from yellow
when newly emerged to a coppery brown when mature. Each wing has eight black dots in three rows across
the back. Eggs are orange to yellow in color and deposited in groups of 40 to 50 on the underside of leaves.
Larvae are yellow, and the bodies are covered with six rows of long, black-tipped spines. Feeding by adults
and larvae results in the skeletonizing of leaves. See Cornell fact sheet and photo of damage (Links 42, 43).
Management Option
Scouting/thresholds
Natural Enemies
Recommendations for Mexican Bean Beetle
Overwintering adults move into fields and feed for 1-­‐2 weeks and then lay their eggs. Monitor
fields by scouting for adults, eggs, and larvae. Because populations vary within a field and
between fields in an area, it is difficult to determine when population numbers present a
threat.
Natural enemies such as parasitic flies, wasps, and predators help to control Mexican bean
beetle populations. An imported parasitoid, Pebiobus foveolatus, can be important for control.
The parasitoid does not overwinter successfully, so it must be reared and released each year.
Use Reference 3 or see Cornell Biological Control: A Guide to Natural Enemies in North
America for identification of natural enemies (Link 41).
30 2012