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]
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We received a freeze warning in Vincennes last Sunday with a predicted low temperature of 33 °F. Growers in southern Indiana reported minimal damage on plants covered with floating row covers. But significant damage was observed in fields that were not protected or covered with a thin layer of floating row cover. At Southwest Purdue…Read more about Without Protection, Freezing Temperatures Monday Morning Caused Damage on Plasticulture Strawberries in Southern Indiana[Read More]
Despite the cooler weather we’ve experienced the last couple of weeks, temperatures from April 1st through 26th averaged 2.3°F above normal for the entire state (Figure 1). Departures have steadily declined as the weather pattern shifted to cold and dry as a result of an upper atmosphere blocking pattern. Since April 21st, temperatures averaged 9-12°F…Read more about Below-Normal Temperatures and Precipitation Continue[Read More]
At the Meigs Horticultural facility on April 24th we experienced freezing temperatures from 2 am until 7 am, with a low of 26.8 degrees Fahrenheit for one hour. The damage to fruit crops on the farm is scattered depending on varieties. A rough estimate would be 10% cold damage on the crops. The growth stages…Read more about Crop Conditions[Read More]
The plum curculio (Conotrachelus nenuphar) is a small “snout” beetle (also known as a weevil – one of my favorite beetle groups!) that will feed on apples, peaches, pears, plums, and cherries. Both adults and larvae have chewing mouthparts and can damage fruits; adults by feeding and laying eggs in newly set fruit and larvae…Read more about Tips for managing plum curculio in tree fruit[Read More]
We’re getting close to the time when growers need to make chemical thinning decisions – for many the most perplexing and risky decision they will make all year. This is usually a tricky call to make. Remember that only about 5-10% fruit set is usually enough for a full crop. In other words, 90 out…Read more about Chemical thinning[Read More]
Once flowers open in the spring, we’re hoping for warmer weather so the bees will transfer pollen and for rapid pollen tube growth. As we all know, apples require cross pollination, so for example Golden Delicious pollen will not fertilize Golden Delicious flowers. We rely on bees and other insects to transfer pollen from one…Read more about Pollination – a refresher[Read More]
It’s that time of year to make sure you have all your fruit insect monitoring tools on hand and ready to place out in the orchard. Whether you’re already experienced, or just learning how to use insect monitoring tools, they can be big a help in detecting the presence and activity of important pest insects…Read more about Updates on new monitoring tools for fruit insects[Read More]
What is Optogen®? The active ingredient in Optogen® (Figure 1) is bicyclopyrone. Corn growers may recognize bicyclopyrone as one of the four herbicide ingredients in Acuron® herbicide. Bicyclopyrone is a Group 27 herbicide with both pre-emergence and post-emergence activity on select weed species. Group 27 herbicides inhibit an enzyme known as “HPPD”, resulting in an…Read more about Optogen®- a new herbicide available in select vegetables and strawberry.[Read More]
The 2022 Purdue Small Farm Education Field Day was a big success. Nearly 72% of attendees reported that they learned something new. Nearly half indicated they plan to adopt recommended practices for diversified farming systems, and over a third (36.0%) plan to adopt recommended practices for creating, improving, or strengthening their business. Half (52.0%) indicated they plan…Read more about Small Farm Education Field Day – July 27, 2023[Read More]
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