Fruit Crops Edition - Wine Grape Section

Seasonal updates on diseases, insects, weeds impacting small fruit (blueberry, cranberry, and wine grape). Fruit Pest Alerts are also available via this category feed.
 
Subscription is through the general Fruit feed available via EMAIL and RSS.

Fruit IPM for 06/30/20

Peach:

Oriental Fruit Moth: We are between generations 1 and 2, with the first insecticide applications having been just applied in southern counties, and in northern counties due by the weekend. The second application will be due the following week. [Read more…]

Fruit IPM for 6/23/20

Peach:

Oriental Fruit Moth: We are between generations 1 and 2, with the first insecticide applications having been just applied in southern counties, and in northern counties due by the weekend. The second application will be due the following week. See timings below: [Read more…]

Wine Grape Downy Mildew Update

By Peter Oudemans

June 4-6 and June 12 showed some significant downy mildew infection periods and we are now beginning to see the effects.  Since berries are susceptible until about a month after capfall this is something we need to be concerned about.  The question is how to handle this now?

Rules: 

  • Hitting the target: Make sure the sprayer is set up to hit the target.
  • Longevity:  Fungicides work best if they can dry after application.  Rainfall before drying will wash them off
  • Resistance:  Downy Mildew is a high risk pathogen and fungicides must be rotated

[Read more…]

Fruit IPM for 6/17/20

Peach:

Oriental Fruit Moth: We are between generations 1 and 2, with the first insecticide applications due in southern counties by the end of the week, and in northern counties by the end of the following week. [Read more…]

Important Update on Registration of Low-Volatility Dicamba Herbicides

On June 3, 2020, the U.S. Court of Appeals for the Ninth Circuit issued a ruling that vacates current U.S. registrations of of three dicamba herbicides, XtendiMax (Bayer), Engenia (BASF) and FeXapan (Corteva). The Court ruled in favor of a petition challenging the EPA’s 2018 registration decision. The ruling comes after a group of environmental organizations filed a petition with the Court challenging the U.S. Environmental Protection Agency’s . Other dicamba-containing products are not concerned by this ruling.

The subsequent action by the EPA provides, among other things, that “growers and commercial applicators may use existing stocks that were in their possession on June 3, 2020, the effective date of the Court decision. Such use must be consistent with the product’s previously-approved label, and may not continue after July 31, 2020.”

Click here for the EPA’s full order – see page 11 for key details.

The EPA’s order addresses the use, sale, and distribution of existing stocks of  low-volatility dicamba products impacted by the Court’s ruling.

 

 

Fruit IPM for 6/9/20

Peach:

Oriental Fruit Moth: We are between generations 1 and 2, with the first insecticide applications due in southern counties in 10 days to 2 weeks. Where trap captures are below 8 moths per trap and no injury is present, then stretch insecticides to get as close to the model timing as possible. Where trap counts continue above 8 males per trap, then the population is too high to take this approach. This is the case in several orchards in northern counties. [Read more…]