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Growth and development in fruit crops is continuing slowly across the state due to cool temperatures and resulting low growing degree day accumulation. It’s been a rough start to spring to say the least. Frost and freeze damage from the April 15-16 events has become more obvious, and there are still risks of freezing temperatures in[Read More…]
Strawberries growing in the matted-row system are in the blooming stage. Open flowers cannot tolerate temperatures lower than 30°F (Figure 1). Strawberry growers should be prepared for the coming low temperatures this week. Row covers (Figure 2) can be effective in protecting strawberry flowers. In our earlier trial, 1.5 oz/sq row covers provided 4-6 degrees[Read More…]
Dual Magnum is registered for use in numerous row crops and specialty crops in the state of Indiana. While some vegetable crops (beans, peas, potatoes, pumpkins, rhubarb, and tomatoes) appear on the specimen or national label (Section 3 label), fruit crops do not. Numerous specialty crops that do not appear on the specimen label are[Read More…]
The earth’s position and movement around the sun welcomed the spring equinox on March 19th, and meteorologists in the northern hemisphere welcomed spring on March 1st. Unfortunately, the atmosphere – particularly over the midwestern and Great Lakes states – refused to acknowledge those dates to offer us a more traditional spring. Sure, Indiana’s spring 2020[Read More…]
Strawberries growing in the matted-row system are in the blooming stage. Open flowers cannot tolerate temperatures lower than 30°F. Strawberry growers should be prepared for the coming low temperatures this week. Row covers can be effective in protecting strawberry flowers. In our earlier trial, 1.5 oz/sq row covers provided 4-6 degrees protection and successfully protected[Read More…]
There has been some talk about the use of promalin to help overcome the damaging effects of freezing temperatures. Only a small amount of research has been conducted on this. Dr. Steve McArtney showed that Promalin applied after damaging freeze events could increase parthenocarpic (seedless) fruit development, but not every time. Keep in mind this[Read More…]
What is the best way to assess bud damage from cold temperatures? Drs. Tara Baugher and Jim Schupp at Penn. State University have put together a nice page with some excellent photos explaining how to assess fruit bud survival: http://extension.psu.edu/plants/tree-fruit/news/2016/assessing-fruit-bud-survival-and-crop-potential I would add that unless you find that more than 90% of your buds have[Read More…]
Spring weather is unpredictable. One of the major risks associated with strawberry production is cold damage in the spring. Open strawberry flowers can not tolerate temperatures lower than 30°F, popcorn stage flowers and tight buds may tolerant temperatures low to 26 and 22°F, respectively. If strawberries are in the early blooming stage, the damage might[Read More…]
Over the last week many areas of the state have experienced minimum temperatures likely to cause bud damage. Many areas experienced low temperatures of 24-26 F (according to weather stations) although one grower reported a low of 22 F. As experienced growers know well, it’s not just the temperature as such that’s important, but the[Read More…]
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