Look for the black larvae up on the top leaves and the associated feeding injury (see picture). Adults were busy in the wheat and now have made the move. I’m now starting to see CLB larvae in oat fields this week. Stanyard, CCE/NWNY TeamĬereal Leaf Beetles in Oats CLB larva feeding and leaf injury in oats. We are almost at the finish line so stay diligent with your normal pest scouting and management routines! Stripe rust in wheat. Cereal leaf beetles are still high in some fields. Gary Bergstrom also reported stripe rust in a couple fields in Yates County. On Friday, I found a field that had severe powdery mildew up on the flag leaf. Other leaf diseases are also starting to show up unexpectantly. This includes around lakes, river bottoms, and areas of poor wind drainage surrounded by woods that could still be at risk. I have cautioned about the many micro-climate factors we have in this region. I have had many calls about whether to spray or not. The Fusarium Risk Management site ( ), is showing no risk right now due to the cool dry conditions. Many wheat fields flowered last week and continue to flower this week. This field had Cruiser treated seed so I hope that will take care of this first flush of aphids. They will multiply quickly so soybean scouting should ramp up in the next week. These adults will immediately give birth to live young which will start feeding on the first emerging trifoliate. They were coming off the buckthorn bushes in the hedgerow where they overwintered as eggs. I saw the first winged soybean aphids flying into a soybean field on Friday in Ontario County. Stanyard, CCE/NWNY Team Soybean Aphids Migrating to Soybeans Winged soybean aphid on young soybean plant. Continue scouting those grass, mixed stand and wheat fields and keep an eye on the blackbirds! So, let’s not completely let our guard down. A couple are also showing up in the sweep net in mixed stands. However, we have had a report of a grass hay field that armyworms were cutting heads. We still are not catching many common armyworms in any of our traps.
At this stage the stem is too thick for the cutworms to completely cut plants.Īrmyworm Trap Numbers Still Low Common armyworm in mixed hay stand. I would continue to scout all corn until it reaches the V6 growth stage (6 leaves with visible collars). This is five weeks straight! This means that we will have multiple waves potentially attacking corn over the next couple weeks. Unfortunately, we had another significant BCW flight come in again this week. We have already reported that some corn fields have been significantly injured enough (3-5%) to spray. Much of the NWNY region has reached the 300 degree days for the first significant cutworm flight on May 3 rd to be large enough to completely cut corn plants.
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