Green manure
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Green Manure

Green Manure
Fruit and Vegetable Science
K. Jerome

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Green manure Presentation Transcript

  • 1. Green manure Cover crops “ Feed the soil, not the plants”
  • 2.
    • Taking care of soil –
    • organic matter
    • green manures
    • mulching
    • Usually means plants have all they need
  • 3. What is it?
    • Rapidly growing plants sown in spring or fall
    • Incorporated into soil before planting
    • peas
  • 4. What does it do?
    • Can supply nutrients to plant
    • Build productive soil
    • Protect from erosion
    • Prevent weed growth
  • 5.
    • Easy to plant
    • Requires only basic
    • care to thrive
    • green manure in cut flowers
    • Proper selection - grow well everywhere
    • Well suited to all gardens, whether big or small
  • 6.
    • http://www.organickitchengarden.co.uk/organicconversion.html
  • 7. Planting
    • Fall planting
    • allow plenty of time to become established
    • four weeks before killing frosts
  • 8. Care
    • Low-maintenance
    • Mowing keeps manageable, keeps from competing with vegetables
    • Water during drought
  • 9. Turning under
    • must till cover
    • crops before
    • set seed, top
    • growth gets
    • out of control tilling in oats
    • Timing – flowering or when seed heads emerge
  • 10. Turning under
    • Mow or use weed trimmer
    • Wait day or two until leaves
    • and stems dry down
    • Dig under with tiller (or by hand)
  • 11. Planting crops
    • Wait two to three
    • weeks before planting
    • beans in rye
    • Decomposition can tie up nitrogen
    • Rye is allelopathic - inhibits seed germination
  • 12. Finding space in garden
    • Fit cover crops right into garden plan
  • 13. Succession cropping
    • After spring crops harvested, plant fast-growing cover crop such as buckwheat
    • Allow buckwheat to flower, turn under, plant fall crops
    • Planted in fall after main season crops finished
  • 14. Interplanting
    • Trickier
    • Must provide water,
    • nutrients to cover crops
    • and vegetable crops
    • Must controlling growth of cover crop
    • Delay planting of cover crop - one-third of the way through vegetable's growing cycle
  • 15. Interplanting
    • Transplant young tomato and pepper plants into mowed mulch of hairy vetch, rye
    • mulch reduces weeds, maintains moisture, provides nitrogen
  • 16. Which cover crop?
    • Time of year
    • Species
    • Cereal rye very cold-tolerant - late-season plantings
    • Buckwheat very frost-tender
  • 17. Legumes
      • Nodules on roots contain nitrogen-fixing bacteria
      • Bacteria convert nitrogen in air into form plants can use
      • Used as fertilizer source before synthetic fertilizers were widely available
  • 18. Rye, oats
    • annual rye, cereal rye
    • Cereal rye – planted late summer, early fall
    • grows until late in fall, resumes in spring
    • Annual rye – dies in winter, don’t have to wait three weeks to plant
  • 19. Field peas,oats
    • legume to fix nitrogen
    • grain for organic
    • matter
    • peas climb oats
    • Both crops cold-tolerant
    • good for late summer, early fall
  • 20. Sorghum-sudangrass
    • Cross between sorghum and sudangrass
    • Large amounts of
    • organic matter
    • 5 to 12 feet tall
    • Mow to 6 inches
    • when reaches 3 feet
    • Frost-tender
  • 21. Buckwheat
    • Broadleaf plant
    • smother crop - shades
    • weeds
    • Must not let go to seed
    • Matures in 6-8 weeks- can be planted between spring and fall vegetable plantings
    • white flowers good cut flowers; attract beneficial insects
  • 22. Clover
    • living mulch
    • tolerates shade, traffic
    • attracts beneficials
    • attractive
    • Many kinds:
    • White Dutch
    • Yellow sweet
    • Crimson
  • 23. Sources
    • Check with local farm supply store for seed - may be willing to order varieties they don't normally carry, split into smaller batches Peaceful Valley Farm & Garden Supply , Grass Valley, California, 888-784-1722 Johnny's Selected Seeds , Winslow, Maine, 877-564-6697 Seven Springs Farm , Check, Virginia, 540-651-3228
  • 24.
    • http://www.ars.usda.gov/is/AR/archive/oct09/rye1009.htm