The key to any productive horse pasture lies in the quality of the grass seed that is used. Maintaining a healthy horse pasture need not be a taxing task. With proper care and attention you can assure that your horse pasture is providing feed for your horses without being overgrazed. The amount of pasture you will need is largely dependent on how many horses you have and whether or not your pasture makes use of an irrigation system. For a dryland pasture with absolutely no irrigation, you will need to provide approximately 28 acres of pasture per year, per horse. On the other hand, an irrigated pasture is much more productive. If you have an irrigation system, you need only provide 1 to 2 acres of pasture per year, per horse.
When seeding your pasture there is a general process you should follow. Before you begin, it is a good idea to do soil tests to get an idea of the mineral make up of the soil. Assuming your nutrient levels have a well-balanced mix of lime, phosphorus, and potassium, you are good to go. If not, you may need to make amendments to your soil.
When it comes to seeding, be sure that you use top of the line grass seed. Be sure you properly research the types of seed that will grow best in your area. Any high quality grass seed will have high germination rates and will not be susceptible to being contaminated by weeds or other grass types. One last thing to be aware of is that certain types of perennial ryegrass contain an element that is harmful to horses. Be sure to refrain from usage of these types of grass seed. Reading the label should give you sufficient information to determine whether the grass seed is of a high enough quality for use as horse pasture seed.