Selecting & Using Cover Crops
Part 1 – 294 | Unit 1.6
Appendix 2: Carbon to Nitrogen Ratios &
Percent Nitrogen of Various Cover Crops
Appendix 2: Carbon to Nitrogen RatiosMATERIAL C:N RATIO
Rye Straw 80:1
Oat Straw 70:1
Rye Cover Crop (mature) 40:1
Rye Cover Crop (vegetative) 30:1
Rye Cover Crop (immature) 15:1
Bell/Vetch Cover Crop 15:1
Crimson Clover 15:1
Compost 30:1
Corn Stalks 60:1
Sawdust 250:1
PERCENT NITROGEN
MATERIAL C:N RATIO
Vetch 3.5
Rye (immature) 2.0
Rye (mature) 1.0
Bell/Vetch/Cereal Mix 2.5