Disease management still critical in grapes

By Terence Bradshaw June 26, 2017 No one needs me to tell them that this has been a wet spring and now early summer. Most grapes are approaching, in, or maybe just exiting bloom across the state, and disease pressure continues to be possibly the highest of the season. Fungicide coverage should be maintained on […]

Wild grape bloom starts the clock for grape berry moth management

By Terence Bradshaw June 12, 2017 There is a wild grape that overhangs the South Burlington bike path just east of the UVM Hort Farm that I run by several days per week. Last Friday, June 9, it went into bloom (it was not blooming on my run the day before). Why is this important? […]

Grape tumid gall maker- curiosity and management

By Terence Bradshaw June 8, 2017 One of the great things about growing grapes in Vermont is that, by and large (and compared to my other crop, apples), the pest management is relatively simple- four or so well-timed fungicides sprays, and an insecticide aimed at grape berry moth. There are other considerations for unique situations: […]

Vineyard management approaching bloom

By Terence Bradshaw Grapes are at 10-12” growth in most Vermont vineyards, and combined with the wet, cool, rainy weather, are at prime susceptibility for phomopsis, black rot, and anthracnose. Fungicide coverage should be maintained on 7-10 day intervals during this extended rainy stretch; if it dries out as expected at the end of the […]

Registration for summer 2017 Cold Climate Viticulture course

This viticulture course is an opportunity for new and aspiring growers to receive a comprehensive knowledge base for establishing or maintaining a vineyard for anyone who is seriously considering winegrape production in Vermont or surrounding regions. The course is guaranteed to run based on present enrollment, but won’t be offered again until 2019. Tuesdays and […]

Vineyard management: Diseases and shoot thinning

By Terence Bradshaw The growing season continues to be cool and wet, and grapevines at the UVM Horticulture Research & Education Center are showing about four to five inches of shoot growth. We are beginning to enter a critical time for disease management. Growers should consider applying a protective fungicide soon that has activity against […]

Disease management in Vermont grapes- the season begins

By Terence Bradshaw Grapes are moving fast in Vermont vineyards, with most cultivars in the UVM vineyard at about 2” shoot growth. Shoot thinning now will give best results before the vines waste energy on growth that you won’t keep. We typically aim for 4-6 well-spaced shoots per foot of canopy, selecting for the most […]

Wine grape webinar

Dear Northern Grapes Project Webinar participants: Announcing the May Webinar (last webinar of the season): “Introducing Itasca – Minnesota’s new cold-hardy white wine grape” Matthew Clark John and Jennifer Thull University of Minnesota University of Minnesota Tuesday, May 9th, 2017 12:00 Noon Eastern (11:00 am Central) 7:00 pm Eastern (6:00 pm Central) With Matthew Clark, […]

Buds swelling in local vineyards

By Terence Bradshaw Grapevine buds are showing significant swelling in vineyards both in the Champlain Valley and at my house at near-1500 feet in Washington County, so bud break is right around the corner. However, This extended cool weather expected this week will leave those buds in this swollen state for an extended period, which […]

NEWA models – intermittent downtime

By Terence Bradshaw A note from the folks at NEWA. The lesson here: know your basic apple scab and fire blight pathology- wet weather beyond a couple of hours will cause a scab infection, stay covered with fungicide unless there is a dry forecast; hot weather immediately preceding bloom can cause a fire blight infection […]