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Production in Root Control Bags

Production in Root Control Bags. Commercial Plant Production. Root Control Bag Construction. Fabric sides are permeable to water, nutrients & air. Plastic bottom is glued on, not stitched on. Root Control Bag. Growing Medium. Native soil. Root Retention at Harvest.

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Production in Root Control Bags

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  1. Production in Root Control Bags Commercial Plant Production

  2. Root Control Bag Construction • Fabric sides are permeable to water, nutrients & air. • Plastic bottom is glued on, not stitched on.

  3. Root Control Bag

  4. Growing Medium • Native soil

  5. Root Retention at Harvest • WSU article states that > 75% of the plant’s root system is retained at harvest.

  6. Preventing Circling Roots • Root tips penetrate the fabric. • Constriction. • Swelling & carbohydrate build-up. • Callus and root primordia formation.

  7. Bag Side Wall Constriction Root Tip Root

  8. Bag Side Wall New Branch Roots Root Root Tip

  9. Planting • Holes made with an auger or special planting machine. • Flat bottomed. • A portion of the bag should be above-ground.

  10. Planting at Mark Fleming’s Nursery

  11. Watering • Drip irrigation

  12. Drip Irrigation • Mulched • Grass Alleys

  13. Harvest • Harvest dormant plant material. • Small soil volume compared to B&B. • Reduced water holding capacity can’t support developing foliage in the spring. • Scrape off outside roots. • Remove the bag prior to transplanting.

  14. B&B ROOT CONTROL BAG Smaller soil volume 1” caliper 16” ball diameter 1” caliper 8” diameter bag

  15. Harvesting Equipment • Smaller plants: • shovel or spade. • Larger plants: • loader tractor with sling • forklift

  16. Harvesting at Mark Fleming’s Nursery

  17. Staking May be required because of the small root mass in relation to plant size.

  18. Bag Sizes

  19. The End

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