Grapevines are in early stages of growth across the state. Significant shoot growth is expected with the warm weather predicted for this week. Disease Control This is a very important time to maintain preventative control over major grape diseases including Phomopsis, black rot, powdery mildew and downy mildew. Fungicide application should begin at 1-3 in…Read more about Early season pest & disease control in grapevines[Read More]
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Grapevines are in various stages of early growth throughout Indiana, ranging from bud swell to 6-8 in shoot growth, depending on variety. A cold weather event came across the state on 4/24 bringing temperatures as low as 25°F (see Figure 1). The minimum temperatures in the following areas were reported as follows: Lafayette, IN: 28.9°F…Read more about Grapevine Freeze Damage Update[Read More]
Cold temperatures throughout March and April have led to delays in grapevine phenology ranging from 7-14 days behind normal. Generally speaking, later bud break reduces the risk of spring frost damage. However, warm weather over the weekend has progressed bud development greatly. Buds are in various stages of growth across the state, ranging from bud…Read more about Freeze Warning- Grapevine Susceptibility & Protection[Read More]