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The Forest Service National Center for Reforestation, Nurseries, and Genetic Resources (RNGR) is a leading source of technical information for nurseries and land managers regarding production and planting of trees and other native plants for reforestation, restoration, and conservation.

 
NPN Protocol Details Image

Guettarda (speciosa)

Pius Liyagel
State Forester
Yap Forestry
PO Box 1000
Yap Islands, Federated States of Micronesia 96941
www.wildflowerfarm.com

Family Scientific Name: Rubiaceae
Family Common Name: Coffee Family
Scientific Name: Guettarda speciosa
Common Name: Blaw
Species Code: GUESPE
Ecotype: Yap Islands
General Distribution: Blaw is indigenous from eastern Africa and tropical Asia, northern Australia to the Marshall Islands and southeastern Polynesia, but not to Hawaii. It is a common coastal strand plant.
Propagation Goal: plants
Propagation Method: seed
ProductType: Container (plug)
Stock Type: 3L (1 gal) polybag
Time To Grow: 9 Months
Target Specifications: Height: 20 cm<br> Caliper: N/A<br> Root System: Firm Root Plug in container.
Propagule Collection: Mature fruits are hard, ovoid, and yellow-green that turn black at maturity. fruits are collected throughout the year.
Propagule Processing: Seeds exhibit internal dormancy and do not germinate immediately after planting.
Pre-Planting Treatments: Seeds are soaked in water to remove any inhibitors and to allow full imbibition of seeds prior to sowing. Seeds are sown into deep flats (1X2') and covered with composted leaf mold. Seeds may take up to 3 months to germinate after planting.
We transplant viable germinants into containers as soon as the radicle emerges. Flats are checked for new germinants daily.
Growing Area Preparation/
Annual Practices for Perennial Crops:
The Yap Agroforestry nursery a year round growing season with periods of high rainfall.
The facility is comprised of one large greenhouse, shade structures, and mist propagation beds, and an outdoor growing compound. All propagation environments are utilized at different stages of seedling growth to protect seedlings from heavy rains, and provide to temperature and shading variance during production. We irrigate all containers by hand, but are investigating a sub-irrigation system for the nursery. We use fertilizers if when they are available.
Establishment Phase: Seedlings are germinated in a greenhouse were they remain for 4 months. Flats and containers are watered by hand.
After seedlings are well established and have at least 2 true leaves, they are transplanted into 3 L (1 gallon) polybags filled with a growing medium of 2:1:1 (v:v:v) sand, seaweed compost, and topsoil.
Length of Establishment Phase: 3 -4 months
Active Growth Phase: Approximately 4 weeks after transplanting, seedlings are grown under a shadecloth during summer months. During months of intense summer heat, containers are watered daily with occasional deep irrigation to leach out accumulated salts.
Length of Active Growth Phase: 4 months
Hardening Phase: Irrigation frequency and duration is gradually reduced for 4 to 8 weeks prior to outplanting. Nursery stock is top pruned at this stage.
Length of Hardening Phase: 1 month
Harvesting, Storage and Shipping: Containerized seedlings are stored in the open growing compound until moved to outplanting site.
Length of Storage: Variable; depends on outplanting date.

Citation:

Liyagel, Pius. 2005. Propagation protocol for production of Container (plug) Guettarda speciosa plants 3L (1 gal) polybag; Yap Forestry Yap Islands, Federated States of Micronesia. In: Native Plant Network. URL: https://NativePlantNetwork.org (accessed 2024/07/03). US Department of Agriculture, Forest Service, National Center for Reforestation, Nurseries, and Genetic Resources.