Last fall, armyworm infestations, heat/drought, declining fertility, or some combination thereof resulted in bromegrass stands under some pretty severe stress. In the case of armyworms, catching them early and treating was a huge benefit. If not, or if the stress was weather or fertility related, it didn't seem like much helped.
Fast forward to this spring. Many stands have not recovered or responded to fertility treatments. What's your next option?
We're well past the optimum seeding date for brome. Another window will open in the fall for overseeding if forage production is your focus. In the interim, give consideration to either keeping the stand clean and preparing for seeding next fall, or seeding another forage this summer. Summer annual forages would be one option. Others exist as well, depending on your future focus of the stand. Be considerate of the fact that weed pressure will be severe due to the increase in open space, so weed control efforts may need to be increased. Erosion potential on steep slopes is also a concern that may require some seeding this summer to hold soils in place. No matter what the situation, soil test soon if you will be seeding something this fall, or later this summer if you will be reseeding in the fall.
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