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Oat Variety Comparisons On Fields Managed Organically In Minnesota and North Dakota

Oat Variety Comparisons On Fields Managed Organically In Minnesota and North Dakota. Patrick M. Carr*, Herman J. Kandel, Paul M. Porter, Richard D. Horsley, and Steve F. Zwinger . University of Minnesota.

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Oat Variety Comparisons On Fields Managed Organically In Minnesota and North Dakota

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  1. Oat Variety Comparisons On Fields Managed Organically In Minnesota and North Dakota Patrick M. Carr*, Herman J. Kandel, Paul M. Porter, Richard D. Horsley, and Steve F. Zwinger University of Minnesota

  2. Small-grain cultivar adaptation studies typically are located in environments where synthetic fertilizers and biocides are used.

  3. Many organic growers want cultivar adaptation studies to be located in environments managed organically. D. Podoll, personal communication, 2005

  4. Objectives • Identify modern oat cultivars that were adapted to growing conditions in certified organic fields. • Identify growth characteristics that were correlated to yield performance.

  5. Materials and Methods

  6. Agronomic data collected • Plant height (PM), lodging, grain yield, test weight, and kernel weight • Plant stand density, seedling vigor and height, canopy closure, and panicle density

  7. Cultivars were arranged in a randomized complete block with treatments replicated four times at each location in both yr.

  8. Results and Discussion

  9. Cultivars with computed stability values ( ) were: Sesqui (23), HiFi (40), Leonard (56), Richard (77), Wabasha (81), Ebeltoft (86), Morton (114), Youngs (140), Hytest (428), and Buff (516).

  10. There was an interaction between environment and cultivar treatments for grain yield, test weight, and kernel weight.

  11. Several cultivars ranked high consistently for grain yield, test weight, and kernel weight. • Grain yield: Sesqui, HiFi, Leonard • Grain test weight: Buff (hull-less), Hytest (hulled) • Kernel weight: Youngs

  12. Growth traits collectively explained only as much as 40% of the variation in grain yield, and in most instances considerably less. • A majority of the variation still was unexplained.

  13. Conclusions • Sesqui (along with HiFi and Leonard) seem to be adapted to production in certified organic fields if grain yield is an important selection criterion.

  14. Conclusions (continued) • This investigation failed to identify plant growth and development traits that explained consistently the variation in grain yield between cultivars.

  15. Conclusions (continued) • Beyond the scope of this investigation was responding to the belief that a need exist to develop and select cultivars in organic environments.

  16. Conclusions (continued) • Beyond the scope of this investigation was responding to the belief that old cultivars are better adapted to organic environments than modern cultivars.

  17. We are grateful for the NCR-SARE research and education grant program for providing the funds to support this study.

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