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Green manure

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Green Manure

Green Manure
Fruit and Vegetable Science
K. Jerome

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    Green manure Green manure Presentation Transcript

    • Green manure Cover crops “ Feed the soil, not the plants”
      • Taking care of soil –
      • organic matter
      • green manures
      • mulching
      • Usually means plants have all they need
    • What is it?
      • Rapidly growing plants sown in spring or fall
      • Incorporated into soil before planting
      • peas
    • What does it do?
      • Can supply nutrients to plant
      • Build productive soil
      • Protect from erosion
      • Prevent weed growth
      • 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
      • http://www.organickitchengarden.co.uk/organicconversion.html
    • Planting
      • Fall planting
      • allow plenty of time to become established
      • four weeks before killing frosts
    • Care
      • Low-maintenance
      • Mowing keeps manageable, keeps from competing with vegetables
      • Water during drought
    • 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
    • Turning under
      • Mow or use weed trimmer
      • Wait day or two until leaves
      • and stems dry down
      • Dig under with tiller (or by hand)
    • Planting crops
      • Wait two to three
      • weeks before planting
      • beans in rye
      • Decomposition can tie up nitrogen
      • Rye is allelopathic - inhibits seed germination
    • Finding space in garden
      • Fit cover crops right into garden plan
    • 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
    • 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
    • Interplanting
      • Transplant young tomato and pepper plants into mowed mulch of hairy vetch, rye
      • mulch reduces weeds, maintains moisture, provides nitrogen
    • Which cover crop?
      • Time of year
      • Species
      • Cereal rye very cold-tolerant - late-season plantings
      • Buckwheat very frost-tender
    • 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
    • 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
    • Field peas,oats
      • legume to fix nitrogen
      • grain for organic
      • matter
      • peas climb oats
      • Both crops cold-tolerant
      • good for late summer, early fall
    • 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
    • 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
    • Clover
      • living mulch
      • tolerates shade, traffic
      • attracts beneficials
      • attractive
      • Many kinds:
      • White Dutch
      • Yellow sweet
      • Crimson
    • 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
      • http://www.ars.usda.gov/is/AR/archive/oct09/rye1009.htm