KingFisher 426HD from Byron Seeds is one of the most highly digestible (HD) with great agronomic benefits. KingFisher 426HD was bred specifically for increased NDFD and is verry siilar to 425HD. This variety also ranks highly for KingFisher 426HD alfalfa that can withstand the cold, with a winterhardiness of 2.5. KF 426HD, as with other legumes, fixes most of its own nitrogen and will perform strongly for three to 4 years.
KingFisher 426HD alfalfa can be planted in the spring or late summer, but we recommend late summer whenever possible. Planting depth should be 0.25 to 0.50 inches with good soil contact. If spring sown, a nurse crop of grass or small grain is recommended to maximize the tonnage in the seeding year. We usually recommend seeding grass with KingFisher 426HD alfalfa to give a higher tonnage and better quality feed for the life of the stand. KingFisher 426HD alfalfa exhibits autotoxicity, which means established plants, generally older than 6 months, give off compounds that prevent new alfalfa seedlings from establishing.
Once established, KingFisher 426HD alfalfa stand can last for many years. Many modern varieties can handle 28 day cutting schedules and in fact, some elite varieties need that type of management to perform their best. One very critical aspect of KingFisher 426HD alfalfa management is knowing when to take the last cutting in the fall. By using Growing Degree Days (GDD) you can determine the best time to take the last fall cutting. An early fall cut can be taken as long as the plants can accumulate more than 500 GDD to replenish root reserves. A late fall cutting can be taken as long as no more than 200 GDD will accumulate before killing frost (25°F)
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