beans 4-24-12 CLEAN - Vegetableipmasia.org

ORGANIC SNAP BEAN PRODUCTION
Management Option
Postharvest
Seed selection/treatment
Note(s)
Recommendation for White Mold
Incorporate crop debris immediately following harvest to allow soil microorganisms the
opportunity to feed on the survival structures called sclerotia or degrade disease
organisms/overwintering structures.
This is not currently a viable management options.
White mold tends to develop in dense plant canopies. The disease tends to be worse in fields
where there is poor weed management, leaves have mechanical damage or pesticide injury, and
where dead leaves are on the ground. The fungus can grow on dead and living material. White
mold tends to develop when wet weather is persistent.
At the time this guide was produced, the following materials were labeled in New York State for managing this pest and were allowable for organic
production. Listing a pest on a pesticide label does not assure the pesticide’s effectiveness. The registration status of pesticides can and does change.
Pesticides must be currently registered with the New York State Department of Environmental Conservation (DEC) to be used legally in NY. Those pesticides
meeting requirements in EPA Ruling 40 CFR Part 152.25(b) (also known as 25(b) pesticides) do not require registration. Current NY pesticide registrations can
be checked on the Pesticide Product, Ingredient, and Manufacturer System (PIMS) website (Link 2). ALWAYS CHECK WITH YOUR CERTIFIER before using a
new product.
Table 11.1 Pesticides Labeled for Management of Sclerotinia White Mold
Class of Compound
Product
(Active ingredient) Rate/A
PHI
(days)
REI
(hours) Efficacy Comments
BIOLOGICALS
ActinoGrow
(Streptomyces lydicus WYEC
108)
Actino-­‐Iron
(Streptomyces lydicus WYEC
108)
Actinovate AG
(Streptomyces lydicus WYEC
108)
1-­‐6oz/A foliar
1-­‐12oz/A drench
0 1 or when
dry
2-­‐18oz/100lb seed*
*can be applied to seed in a slurry or dry in
planter box.
10-­‐15 lb -­‐ 4 ? Water in after application
3-­‐12 oz 0 1* ? *1 hour re-­‐entry or until solution is dry.
Reapply every 7-­‐14 days. Use a spreader-­sticker.
Use as foliar spray or soil drench.
?
Ballad Plus Bacillus pumilus
str. QST 2808
Contans WG
(Coniothyrium minitans)
1-­‐4 qts 0 4 ? Begin application soon after emergence and
when environmental conditions are conducive
to disease development. Continue at 7 -­‐14 day
intervals or as needed.
2-­‐4 lb -­‐ 4 1 Effective in 10/13 trials. Apply Contans WG to a
Sclerotinia-­‐infected crop immediately
following harvest at 1 lb/A and incorporate the
debris into the soil or apply at 2 lb/acre to a
planted crop right after planting followed by
shallow incorporation (or irrigate) to about a 1
to 2 inch depth. Do not turn the soil profile
after application of Contans WG to avoid
bringing untreated soil containing viable
sclerotia near the surface. The seller
recommends applying Contans WG for at least
3 to 4 years to reduce soil levels, or every year
16 2012