For those growing delicious small fruits, including cherries, raspberries, blackberries, blueberries, and strawberries, on a U-pick farm or even your backyard, now is the time to be on the lookout for spotted-wing drosophila (SWD), especially if your berries are ripe or in the ripening stage. Most of you are likely familiar with SWD (Figure 1),[Read More…]
Crop Management
Dacthal® flowable herbicide is currently produced by AMVAC Chemical Corporation and registered for use in numerous vegetable crops (Midwest Vegetable Production Guide (mwveguide.org)) and strawberry. It provides pre-emergence control of small-seed broadleaf weeds and grasses. Dacthal herbicide contains the active ingredient DCPA. On April 28, 2022 the United States Environmental Protection Agency issued a notice[Read More…]
In the strawberry benchtop system in the greenhouses at Southwest Purdue Ag Center (SWPAC), we have been experiencing infestations in red berries of a small, clear larvae with a black head capsule. The larvae are often found in clusters on a single fruit and were difficult for us to identify. We encountered them in early[Read More…]
Wet weather has led to an uptick in shot hole disease, caused by the bacterium Xanthomonas arboricola pv. pruni (XAP). We started to see a significant uptick in shot hole on peaches, cherry and plum already. Leaves and fruit susceptibility to XAP infection decreases after pit hardening. Keep in mind that any change to warm,[Read More…]
Indiana seems to experience the entirety of US weather, sometimes in the same day. The recent spate of cool, wet weather has left apple scab one happy fungus (Fig. 1). Most of the state just underwent an extreme scab period, and unfortunately, few of us could do anything about it because of the combination of[Read More…]
Grapevines are in early stages of growth across the state, from bud break to 10 inch shoots. Significant shoot growth is expected with the warm weather predicted for this week. 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[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…]
Spring temperatures It seems like spring is progressing slowly, and in some respects it is. At this time of the year, the rate of plant development depends largely on temperature. The warmer it is, the faster plants develop. Early in the season we hope for cool weather to slow down bud development. This is so[Read More…]