Seeding year alfalfa is different from established stands and needs a different management and harvest strategy. While alfalfa seedlings can be harvested 40 days after emergence, it’s better to wait until 60 to 70 days after emergence.
Potato leafhoppers are reported in north central Kansas and may be arriving in Nebraska soon. It is not too early to begin scouting for these insects and protecting your alfalfa with one of the registered insecticides listed here.
Several factors this spring may be limiting alfalfa and hay production, making summer annual forages a good option to ensure livestock feed is available later. If you're consider this, be sure to obtain the seed you want before supplies tighten.
Did your alfalfa suffer freeze or frost damage this week? If you suspect more than frozen or wilting leaves, check the growing point of plants. All new leaves, stems, and branches initially develop from the growing point.