Though Japanese beetle numbers and their defoliation to soybean typically get lots of mid-season attention, their pressures seemed to be lower this year.
Though Japanese beetle numbers and their defoliation to soybean typically get lots of mid-season attention, their pressures seemed to be lower this year.
Soybean fields throughout the state are rapidly undergoing their annual color changes, deep green to golden yellow.
The following video addresses bean leaf beetle identification, biology, and late-season damage to soybean while keeping the marketable portion of the crop foremost in mind.
Within the past week, we’ve noticed a movement of bean leaf beetles from an early-maturing soybean field, i.e., yellowing leaves, to nearby “green” fields.
A few soybean fields were planted early, and they are not only emerged, but well into the V-growth stages. Producers are just now finding that these “islands” of legumes have become a trap-crop for bean leaf beetle activity early this season.
There have been many reports of black areas in soybean fields in Indiana this season.
The vast majority of corn has long ago completed pollination. There are the late-planted fields that have yet to do so.
Corn leaf aphid (CLA), is typically an occasional presence in cornfields within the Midwest – they can be found in most fields closer to harvest time, when corn is starting to senesce and they don’t/can’t have much impact. They are typically not a pest of concern during the summer months. This year is different! In Indiana and throughout the Midwest, this aphid has made its presence known this year. We don’t know all the reasons why this year’s populations have been so much worse, but it is very likely progression of remnants of Hurricane Beryl from south to north (July 8 and 9) distributed winged aphids throughout our region; this is a common route of aphid transport. Since last week’s Pest&Crop article, winged aphids have been found on multiple plants/crops, including many that CLA are unable to feed on. This morning while running the dog in the yard, John Obermeyer[Read More…]
Japanese beetle adults are emerging, though slowly, throughout the state.
As the soybean crop begins to mature and the plants “shut down”, many insects are no longer interested in these plants.
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