Category: IPM
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Early season disease management in Vermont vineyards
With the heat this week things moved fast, vines at the UVM vineyard hover around 1-2 inches of growth and those at my house at 1440 feet in elevation are at bud burst. It’s time to really be thinking about protecting vines from early season disease infections. Most cold-climate cultivars will not need disease protection…
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Vermont Apple IPM, approaching Bloom: Apple scab, fire blight, pollinationn and thinning
Apple scab: With the rain that has started today and is expected to continue through Friday, I don’t need to tell this audience that we are starting a significant apple scab infection period for orchards across the state. Please keep covered before and, if coverage was questionable, after extended wetting events. In addition to mancozeb…
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VT Apple IPM- Bloom week for many orchards, apple scab ahead
This cool weather is certainly holding bud stages back from substantial development in Vermont. At the UVM horticulture research and Education Center, our zest stars are in full bloom, yet most all other varieties are at lake pink with only a few king blossoms showing. This bud stage has held for about 5 days with…
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VT Apple IPM- Thoughts headed into bloom
Don’t forget we are hosting two twilight meetings this week, please register here: Registration Link Star Grazer Farm (Liberty Orchard) 2481 West St, Brookfield, VT 05036 Thursday May 7, 4:00 -6:30 and Mad Tom Orchard 2615 Mad Tom Road, East Dorset VT 05253 Friday May 8, 4:00-6:30 The weather heading into bloom sure looks less-than…
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VT Grape IPM: Buds swelling, flea beetles, lime sulfur, weed management
With spring here, I recorded and posted a quick video in the UVM vineyard today, which you can see here: 4/28/2026 Vineyard walk. -TB Buds are swelling in Vermont vineyards. At the UVM Horticulture Research and Education Center in South Burlington, yesterday, bud stages sorted into two general categories. Most ‘Minnesota’ cultivars (Marquette, Brianna, Itasca,…
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VT Apple IPM: Big apple scab event coming, recording scouting data in Farmable
Here’s a quick note with rain expected in the next few days. -TB With the dry weather that we’ve been experiencing the last week or so, we have had an extended time without apple scab infection periods. However, there has been significant development of ascospore maturity so the next substantial wetting event, which should occur…
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VT Apple IPM: HIG – Tight Cluster in Vermont orchards
As we wrap up what could be a substantially damaging week for Vermont Apple Growers, I am heartened to have heard very little about damage from Monday night’s frost event. (Please report any damage in your orchard here). That doesn’t mean that there isn’t damage out there— we have heard reports of substantial damage just…
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Follow up: Anticipating frost and preventative measures to protect from it
I’ve received more than one inquiry about what one can do now to help alleviate potential frost damage hat may occur in the next week or two. The specific question has come up about the application of kelp extract pre-bloom to provide some level of frost protection. I must confess that I am quite skeptical…
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More information on use of Promalin to manage early-season frost damage on blossoms
Passing this information on from Valent representative Jim Wargo. Keep in mind, the successful use of PGRs to offset frost damage is dependent on many factors, but ultimately hinges on sending a hormonal signal to receptive ovaries at the base of flower blossoms. Therefore application would be made later when trees are in early bloom.…
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Vermont Apple IPM: Green Tip
Warm weather has substantially advanced bud stages on apples this week. In most of the production regions of the state, orchards are rapidly advancing through green tip and approaching or are at half-inch green. If you have any more than one “mouse ear” leaf showing from the developing buds, you should put the copper back…