Dracontomelon dao - Papua walnut

Description and Uses

Dracontomelon dao (Papua walnut) is a tropical tree from Malaysia & Indonesia . It is mainly grown for its timber crops , which have a no shelf life. The crop is harvested by total removing. It starts flowering after 0 - 0 years. The yield will be {missing data}, but in its top season there will be a yield of {missing data}. Other crop types include; fuel, nut, fruit, timber, ornamental, . The {missing data} is used as delicacy . The {missing data} is used as " {missing data} " with {missing data} ({missing data} - {missing data}) as its significant phytochemical. There is {missing data} extracted by {missing data} from the tree's {missing data} yielding {missing data} - {missing data} oil. The tree's wood is called {missing data} and has a density of 520 - 520 kg/m³. Regarding firewood production the tree's growing speed is medium, it's energetic value is 4500 ckal/kg and the wood's drying speed is {missing data}. After 90 years the tree can be totally removed as it reached its commercial and ecological goal. Dracontomelon dao has a lifespan of 200 years.

Environmental limitations

The tree is 45 meters tall with a crown of 20 meters wide. The tree prefers a planting distance of 100 cm and a row distance of 300 cm. It is fast growing and shade tolerant. Dracontomelon dao has a shallow root-system and it has symbiotic associations with the fungi (endo-mycorrhiza). It is not able to fix nitrogen with "any bacteria. The name(s) or string of bacteria include(s) "not applicable ". The tree's flower-morphology is hermaphroditic and is pollinated by insects. Dracontomelon dao is {missing data} and {missing data} and has no thorns.

Dracontomelon dao thrives in an altitude of 0 to 500 meters above sea-level (tropical). The minimum temperature is 15°C; optimally between 20 - 30°C. The optimal rainfall is 3250 mm/year. Without irrigation the annual rainfall should be between 1800 - 2900mm (L/m²). The optimal soil-pH is between 4.0 - 7.0 in a soil texture of loam. To salt it is intolerant to wind {missing data} and to fire {missing data}.

Pests and Diseases

Dracontomelon dao is susceptible to the following pests: . And it's susceptible to the following diseases: (missing data) , , .

Seed Propagation

Seeds are intermediate and can be stored for 24 months. There are approximative 37000 seeds/kg. The seeds can be propagated as followed: {missing data}