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Low Lignin Alfalfa for Labor Reduction and Increased Yield

Discover the importance of lignin in alfalfa and its impact on plant strength, water transportation, and fiber digestibility. Explore the effects of low lignin genes on in vivo digestibility and milk production. Studies conducted in multiple locations reveal the yield and quality benefits of low lignin alfalfa. Harvest later for higher yields without compromising quality.

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Low Lignin Alfalfa for Labor Reduction and Increased Yield

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  1. Low Lignin Alfalfa for Reducing Labor and Increasing Yield Dr. Dan Undersander University of Wisconsin

  2. Importance of Lignin in Alfalfa • Provides strength to plants • Allows the plant vascular system to transport water in the plant without leakage. • Increases with advanced maturity in alfalfa • Is indigestible and reduces fiber digestibility Lignin Subunits

  3. Effect of low lignin genes on in vivo digestibility

  4. Effect of low lignin genes on milk production

  5. Low lignin study Studies were conducted at Davis, CA and Tulelake, CA, Becker, MN, Arlington, WI, and West Salem, WI.

  6. Planted at 5 locations to determine response in harvest system

  7. Planted at 5 locations to determine response in harvest system

  8. Planted at 5 locations to determine response in harvest system

  9. Yield Curve of Alfalfa Yield

  10. Yield and Quality Curve of Alfalfa Forage Quality Yield

  11. Yield and Quality Curve of Alfalfa Low Lignin Quality Forage Quality Yield

  12. 3 vs 4 cutting by Sept 1 effect on alfalfa yield, Arlington, Wisconsin 17% 25%

  13. Summary • Low lignin lines had lower lignin and higher fiber digestibility. • The CCOMT line stood (lack of lodging) as well in space plantings at the commercial alfalfa line. • Low lignin lines could be harvested later to get the same quality as standard lines but at higher yields.

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