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Brassica Cover Crop Variety Trial

Brassica Cover Crop Variety Trial. Rose Lake Plant Materials Center Bath, MI August 13-Nov. 11, 2010. Disclaimers. This was a one year study. The weather was unusually favorable. Sample sizes were not large (the sample quadrat was 2 ft ². Variability and LSDs tended to be high.

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Brassica Cover Crop Variety Trial

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  1. Brassica Cover Crop Variety Trial Rose Lake Plant Materials Center Bath, MI August 13-Nov. 11, 2010

  2. Disclaimers • This was a one year study. • The weather was unusually favorable. • Sample sizes were not large (the sample quadrat was 2 ft². • Variability and LSDs tended to be high. • When data are presented, even if only some of the selections are covered the statistics were run on all 20 selections.

  3. About the Site… • 100 miles from Lakes Erie, Michigan, and Huron • About 30” of precipitation spaced evenly over the year • Moderate to well draining black sand

  4. Rose Lake Plots Photo by Rose Lake NRCS PMC Photo by Rose Lake NRCS PMC

  5. Brassica Selections • Radishes: • Groundhog • Defender • Tillage Radish • Daikon VNS Lot# LMR6 4 • Daikon Midwood • Daikon NemaCommon • Driller • Experimental Radishes: • GS‐733, IR‐14, NZS, MBS, LITH, COL • Forage Turnips: • Pasja • Appin • Mustards: • Pacific Gold • Ida Gold • Accent • Brown • Rapeseed: • Dwarf Essex

  6. Planting • Planting: Aug. 13, 2010 • Seeding rates: • Radishes 10 lb/A • Mustards 8 lb/A • Turnip 2 lb/A • Rapeseed 5 lb/A

  7. % Cover (Oct. 12) *Using ANOVA, there were no statistically significant differences in % soil cover.

  8. % Cover Tillage Radish ‘Defender’

  9. Biomass (tons/A) (Oct. 12) abcd

  10. OSR ‘Groundhog’ OSR Daikon Nema Common OSR Driller

  11. Tillage Radish OSR ‘Defender’

  12. Biomass (tons/A) (Oct. 12) abc abc abcd bcd cd

  13. Tillage Radish OSR ‘Defender’

  14. Nitrogen Accumulation (lbs/A)

  15. N (lbs/A)

  16. Flowering

  17. Flowering Of these five radish selections, OSR Daikon Nema Common was the earliest to flower. No selection of the total 20 set seed.

  18. Winter Kill As of Nov. 10, 2010, the Brassicas had yet to die off (though some were showing cold stress symptoms). By that date there was at least one hard frost and several lighter frosts. Photo by J. Durling, Rose Lake NRCS PMC. OSR Daikon Nema Common

  19. Photo by J. Durling, Rose Lake NRCS PMC

  20. November 10, 2010 Photo by J. Durling, Rose Lake NRCS PMC Pollinators! In November! On a mustard.

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