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    • Slug and Snail Damage
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J-rooting


Click here for additional information about land prep, planting, seedlings and transplanting coffee.
Seedlings grown in shallow, squat bags or pots can become J-rooted. J-rooting can also occur if a plant is grown over a large rock or other physical impediment restricting straight, downward root development in the ground or pot. Planting timing is of importance as trees left in pots and bags too long, can also develop poor root structure and become pot-bound.

Avoid purchasing or planting seedlings with taproots bent in a "J" or even "Z" shape. These bent roots will constrict sap and wa­ter flow in the young, bearing trees, which may die back or fall over. Plants with severely bent tap roots should have the bend cut off and at least the top third of the leaves pruned away to compensate for root loss while the plant recovers. Cutting off the end of the taproot encourages branching. A new technique to avoid “J-root” seedlings is using a copper hydroxide compound, Spin Out® (see Sources, p. 2) painted or sprayed on the inner surface of pots, plastic bags, or paper containers. CTAHR research found that 12-month-old coffee seedlings treated with the compound were taller, 50 percent heavier, and had a better root system than untreated plants (Nagao and Ho-a 1999). 

Excerpt from Bittenbender and Easton-Smith's (2008) "Growing Coffee in Hawaii" Booklet.

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  • Home
  • Coffee Leaf Rust
    • Coffee Leaf Rust Photos
    • HDOA CLR Pest Alert >
      • HDOA CLR Report Form
    • Sanitation and Disinfestation Info
    • Surveying, Sampling and Monitoring of CLR >
      • HDOA CLR Field Guide and Submission Form
    • Spraying for CLR and Spray Product Info >
      • Spraying for CLR - English
      • Pulverización para CLR - Español
      • Spraying for CLR - Tagalog
      • Spraying for CLR - Ilocano
      • Sprayer Calibration and Pesticide Calculations
      • Priaxor Xemium Info
      • ProBlad Verde Info
      • Pesticide Use FAQs
    • Pruning for CLR and CBB
    • Coffee Leaf Rust Poster >
      • La Roya del Café Póster - Español
      • Coffee Leaf Rust Poster - Tagalog
      • Coffee Leaf Rust Poster - Ilocano
    • CLR Trifold Brochure
    • CLR Presentations and Meetings
    • CLR Publications
    • CLR/CBB Subsidy Program Info
    • Bioworks BotaniGard and Mycotrol Compatibility Chart
  • CBB Management
    • Field Sanitation
    • Pruning >
      • Two-Year Cycle Block Pruning Method by Aki Yamagishi
    • Feral and Unmanaged Coffee Trees
    • Field Monitoring
    • CBB Control >
      • Predators of CBB
    • Harvesting
    • Shipping
    • Beauveria Subsidy Program Info
    • Bioworks BotaniGard and Mycotrol Compatibility Chart
    • 2020 CBB IPM Document
    • CBB & Coffee Presentations & Posters
    • CBB Publications
  • Events and Announcements
    • Feb/Mar CLR Research and Management Update Webinars with Live Q&A
    • 2/16 Train the Trainer Worker Protection Standard (WPS) - Kona
    • Respirator Fit Test Training Workshops - Sign Up
    • Hands-on Coffee Grafting Workshops - Sign Up
  • Hawaii Coffee Pests and Problems
    • Anthracnose
    • Banana Moth
    • Bird Damage
    • Black Twig Borer
    • Blister Spot
    • Cercospora Leaf Spot and Berry Blotch
    • Coffee Berry Borer
    • Coffee Root-knot Nematode
    • Food Safety Concerns - Slug, feces, etc.
    • Fruit Fly
    • Glyphosate Herbicide Injury
    • Green Scale and Sooty Mold
    • J-rooting
    • Little Fire Ant
    • Mite Feeding Damage
    • Nutritional Problems
    • Over-bearing Dieback
    • Rodent Damage
    • Skin Cracking
    • Slug and Snail Damage
    • Sunburn on Coffee
  • NKO - Coffee Pests and Diseases Not in Hawaii
    • Coffee Berry Disease - NKO
    • Coffee Leaf Miner - NKO
    • Coffee White Stem Borer - NKO
    • Coffee Wilt Disease - NKO
  • Coffee Publications and Presentations
    • Growing Coffee in Hawaii
  • Coffee Leaf and Soil Sampling Instructions
  • HDOA Rules - Coffee
  • USDA - Coffee Rules
  • Coffee Organizations in Hawaii
  • Agricultural Theft
    • Chapter 145 - Reg. of Farm Product
    • Dealer Licensing
    • Contacts
  • Coffee Crop Insurance
  • Archive
  • About us
  • Blog