Byron’s 40 LR

$5.80 per lb
Total (50 lbs): $290.00

A taproot glandular haired alfalfa that performs well under potato leaf hopper pressure. 

Weight: 50 lbs Seed Rate: 18 to 22 lbs/acre Stock Status: In Stock Zones: 1, 2, 3, 4, 5 Brand:

Product Description

Byron’s 40 LR is an improved leaf hopper resistant alfalfa with a solid disease package. Alfalfa is a legume that can fix most of its own nitrogen, Byron’s 40 LR is a taproot glandular haired alfalfa. Deep taproot makes it more drought tolerant, and yields well during the hotter part of the summer. The low-lignin industry alfalfas are good quality but they have a drag on yield. Our King Fisher (Byron’s) alfalfas are not only excellent in quality, but they actually increase yield. KingFisher alfalfas have improved fiber digestibility on farms across the country. 


Many modern varieties can can handle 28-day cutting schedules. Byron’s 40 LR recovery after cutting is slower than some alfalfas.  Alfalfa needs five weeks of growth before a killing frost (25 degrees F). Higher fall dormancy numbers in alfalfa indicate early spring and late fall growth, thus increased yield. Byron’s 40 LR  fall dormancy is 3.9. For winter survival, the lower the winter survival number, the more winter hardy the variety. Byron’s 40 LR winter survival is listed as 1.7.


Alfalfa can be planted in the spring or late summer, but we recommend late summer whenever possible. If spring sown, a nurse crop of grass or small gain is recommended to maximize the tonnage in the seeding year. We usually recommend seeding grass with alfalfa to give a higher tonnage and a better quality feed for the like of the stand.

Good rations of sulfur, boron, and phosphorus as well as a pH above 6.5 are critical for alfalfa. Nitrogen is key for good grass yields

Alfalfa exhibits autotoxicity, which means established plants (older than 6 months) give off compounds that prevent new alfalfa seedling from establishing. 

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Additional information

Weight 50 lbs