production in root control bags commercial plant production
TRANSCRIPT
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Production in Root Control Bags
Commercial Plant Production
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Root Control Bag Construction
Fabric sides are permeable to water, nutrients & air.
Plastic bottom is glued on, not stitched on.
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Root Control Bag
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Growing Medium
Native soil
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Root Retention at Harvest
WSU article states that > 75% of the plant’s root system is retained at harvest.
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Preventing Circling Roots
Root tips penetrate the fabric.
Constriction.
Swelling & carbohydrate build-up.
Callus and root primordia formation.
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Bag Side Wall
Root Root Tip
Constriction
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Bag Side Wall
Root Root Tip
New Branch Roots
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Planting
Holes made with an auger or special planting machine.
Flat bottomed.
A portion of the bag should be above-ground.
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Planting at Mark Fleming’s Nursery
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Watering
Drip irrigation
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• Drip Irrigation• Mulched• Grass Alleys
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HarvestHarvest 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.
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1” caliper16” ball
diameter
B&B ROOT CONTROL
BAG
1” caliper8”
diameter bag
Smaller soil volume
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Harvesting Equipment
Smaller plants: shovel or spade.
Larger plants: loader tractor with sling forklift
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Harvesting at Mark Fleming’s Nursery
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Staking
May be required because of the small root mass in relation to plant size.
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Bag Sizes
Bag SizeCaliper Size At Harvest
8" 1"
10" 1 ¼”
12" 1 ½”
14" 1 ¾”
16" 2”
18" 2 ½”
21" 3”
24" 4”
30" 6"
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The End