Mid to late May orchard grass and fescue field above that was grazed in April (photo by Chris Penrose)
A third option, which is more long term, would be to use different cultivars of the same species in in different paddocks as you reseed fields. As you can see in the picture of orchard grass, different cultivars can have different maturity dates which can stretch out the flush of new growth. In addition, new and improved varieties have improved quality, persistence, and insect and disease resistance. If you are considering a new planting, I highly recommend purchasing the best seed available. The additional cost is minimal when you consider the total cost of the seeding and how many years the forage should be in a stand. This will allow different maturing dates and lengthen the spring flush of new growth.
Each of us is in a different situation. Some may be very short on hay ground and have plenty of pasture, some may be just the opposite. One of the most important aspects of Managed intensive Grazing is to be flexible and try to anticipate what the forage needs and availability will be over the course of the season. Hopefully a few of these options will allow you to have a more successful grazing season.
Early maturing orchardgrass on the left, later maturing on the right (Photo courtesy of Dr. Mark Sulc, OSU Extension Forage Specialist)
Source: Chris Penrose, Extension Educator, Agriculture & Natural Resources, Morgan County