Crop rotation
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  • 1. Crop Rotation
  • 2. Dust Bowl, Irish Potato Famine linked to one crucial farming mistake: growing same crop in same piece of land year after year
    Dust Bowl – land depleted of nutrients
    Potato Famine – disease stayed in soil
  • 3. Rotating crops is ancient practice
    Farmers in Ancient Rome, Africa and Egypt rotated their crop
    In England in Middle Ages farmers used three-year crop rotation of rye, oats or barley and nothing the third year
  • 4. Definition of Crop Rotation
    Vegetable crops grown in different areas of garden in succession in consecutive years.
    Change type of plant grown on particular piece of land from year to year or season to season
  • 5. Prevents buildup of soil-borne pests and diseases specific to one group of crops
    Prevents depletion of specific nutrients
  • 6. Eachcrop tends to pull particular set of nutrients from soil depending on its particular needs.
  • 7. Year after year of same crop allows certain pests and diseases to become comfortable
    Rotation confuses pests and keeps populations low
    Diseases don’t become established
  • 8. used to build organic matter and soil nutrients that certain plants use during their life cycle
    .
  • 9. Not only individual plants, but certain families of plants are subject to same diseases and should not be planted in the same area more than once every 3 years
    Potatoes, tomatoes, peppers, eggplants
  • 10. Solanacea or nightshade family--tomato, pepper, eggplant, potato, tomatillo;
    Onion family--onions, garlic, leek, shallot, chives;
    Cucurbit or gourd family--cucumbers, muskmelon, watermelon, squash, pumpkin, gourd;
    Mustard or cole family--cabbage, broccoli, cauliflower, Brussels sprouts, kohlrabi, turnip, radish, Chinese cabbage, kale, collards, mustard greens, rutabaga;
    Legume or pea family--garden pea, snap beans, lima beans, soybean;
    Grass family (edible part is seed)--sweet corn, popcorn, ornamental corn;
    Carrot family (edible parts are roots, leaves, and leafstalk)--carrots, parsnip, parsley, celery;
    Goosefoot family--beet, Swiss chard, spinach;
    Sunflower family--lettuce, Jerusalem artichoke, endive, salsify;
    Bindweed family (edible part is root)--sweet potato;
  • 11. Rotation Plan
    Crops planted in Bed 1 are planted in Bed 2 the following year, and in Bed 3 the year after that, and then Bed 4 and back to 1 again.
  • 12. Green Manure
    traditional component of crop rotation is replenishment of nitrogen through the use of green manure crop
  • 13. Crop rotation can also improve soil structure and fertility by alternating deep-rooted and shallow-rooted plants.
  • 14. Irish Potato Famine could have been prevented by crop rotation to divert the spread of potato blight.
  • 15. Vegetables usually divided into four groups to accommodate four-year rotation plan
    http://www.yankeegardener.com/resource/croprotate.html
    http://www.letsgogardening.co.uk/Information/CropRotation.htm