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Hail Resources and Whether Foliar Fungicide after Hail Pays

This article was written by Angie Peltier and Heather DuFault, UMN Extension educators. Hail event on June 28 Last Friday there was a significant hail event that occurred throughout a large swath of Norman County running west to east and parts of western Mahnomen County. The Grand Forks National Weather Service office received pictures of nickel to quarter-sized hail piled high and some reports of golf ball-sized hail. The effect of all of this hail on the crops that folks struggled so mightily to plant this spring was considerable ( Figures 1 & 2 ).  Figure 1. A corn field as viewed from the road in Norman County after the June 28th hail event (Photo: Heather DuFault). Figure 2. Soybeans in Norman County injured by the June 28, 2024 hail storm (Photo: Heather DuFault). Corn For corn that had reached the V6 of sixth leaf growth stage, the growing point would have been above ground and subject to injury from hail. After giving the crop a couple of days, now would be the time t
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How long can crop plants survive saturated or flooded soils?

Recent, significant rain events have filled drainage ditches both within and along the outside of fields. Some of this flood water has backed up further into the field from ditches that border the field ( Figure 1 ). This article is both for those that have ponded water in fields in which their crop has already emerged and for those producers that just recently planted after scrambling in the last week to get the rest of their 2024 soybean crop seeded.  Figure 1. Ponded water in a corn field near the drainage ditch on the field edge (Photo: Angie Peltier). What saturated or flooded soils do to developing plants. The dangers to roots from flooded soils are many. Flooded soils quickly become devoid of oxygen - which is essential for proper root function. We know that plant leaves are able to use the sun's energy to convert CO 2 and water to oxygen and glucose through a process known as photosynthesis. Respiration is sort of the opposite of photosynthesis, where below-ground, oxygen

Implications of the 'significant' black cutworm flight east of Crookston on May 14

Since my arrival to northwest Minnesota, I have been a part of the UMN black cutworm monitoring network managed by IPM specialist Bruce Potter from the UMN’s Southwest Research and Outreach Center in Lamberton. As part of the network each spring I put a trap in a tree on the edge of my rural property just to the east of Crookston (Figure 1). The operative trap components include a sticky surface on which to trap black cutworm (BCW) moths and a pheromone lure to attract them (Figure 2).  Figure 1. Pheromone trap with a lure to attract black cutworm moths. Figure 2. A black cutworm moth caught in a pheromone trap (photo: Angie Peltier).   Pheromones, or the sex hormones that are produced by female BCW moths, are impregnated into small rubber lures that are placed in the trap. These BCW pheromones attract male moths that are looking for a mate.   Unsuspecting males then fly into the trap and become stuck on the sticky surface. Traps are checked each morning, and moths identified, counte