Skip to main content

Earleaf acacia (Acacia auriculiformis)

Akasia or Papuan wattle or cormis or earpod wattle or earleaf acacia (Acacia auriculiformis) are acacia species in Fabaceae, endemic in Papua and Papua New Guinea, growing at an altitude of 0 to 400 meters above sea level at warm temperatures and able to live in rainfall is very low at 200 mm/year on soils pH 4-9.

A. auriculiformis grows well on damaged land and is able to fix nitrogen. Very tolerant of environmental stress, barren and marginal land, clay, high salinity or waterlogged. Evergreen tree despite the dry season where other plants have shed leaves. Growth of up to 30 meters and diameter of 80 cm.

Dlium Earleaf acacia (Acacia auriculiformis)

Akasia has a phylum where leaves are incomplete without leaf strands, but leaf stems will widen. Trees have phylaxis with scattered types where the phylogens bend like auricles which form the basis for identification of this species. Venation in the phyla is dominant in the longitudinal direction, 10-20 cm long and 2-6 cm wide.

Flowers are in the form of grains, short-stemmed and a grain can consist of 50-100 small yellow flowers. Grains have a length of 10-15 cm. The fruit in the pod contains 2-5 seeds, brownish black and shiny.

Growth

Cormis is a fast growing woody plant, suitable for forest restoration or planted in industrial plantations to produce large biomass in a short time. In Indonesia, wood production is 15-20 m3/ha/year for a 10-12 year rotation period.

Earleaf acacia is very useful to overcome various conditions of environmental stress, erosion and rehabilitation of marginal lands. The ability to bind nitrogen is able to fertilize the soil. The root is very strong for reclaiming hard areas that contain a lot of iron.







This tree is able to grow in areas with low to moderate rainfall (760-1670 mm/year), very acidic soil with a pH of 4 - 6.5, resistant to waterlogging in 6 months and resistant to repeated fire attacks. Papuan wattle also tolerates saline soils and is able to grow 2-3 times more than other Acacia species at the level of salt content of 1250 mol m-3.

The earpod wattle is very fast growing in the tropical and subhumid regions, the natural distribution in the dry savannah or on the edge of a moist river with a tree height of up to 30 m. In areas with sandy soil it grows to 10.6 m and diameter of 20.3 cm in 6 years with a distance of 1.8x1.8m (3000 trees/ha).

This species has been planted to increase the social and economic benefits of communities in various countries, fire support, control erosion and mixed crops in agroforestry activities, industrial waste processors and restoration of ex-mining land. The speed of growth is able to compete with weeds and is more resistant to termite attacks than Casuarina equisetifolia.

Wood character

A. auriculiformis has wood in the durability class III and strength classes between II and III, and specific gravity in the range 0.6-0.75. The chemical content of wood is α-cellulose, hemicellulose and extractive at 44.1%, 33.2%, 4.5%. At 3.5 years old, lignin showed 32.6% for sapwood and 41.4% for wood terrace.

Regeneration

Earleaf acacia is more easily regenerated using seeds. This type of flowering is very abundant and is often used for decoration along the highway. The abundance of these flowers produces very many seeds so that it is easy for breeding and regeneration to not experience many obstacles.

Kingdom: Plantae
Phylum: Tracheophyta
Subphylum: Angiospermae
Class: Magnoliopsida
Order: Fabales
Family: Fabaceae
Subfamily: Mimosoideae
Genus: Acacia
Subgenus: Juliflorae
Species: Acacia auriculiformis
Labels:

Comments

Post a Comment

Popular

Indian rosewood (Dalbergia latifolia)

Sonokeling or Java palisandre or Indian rosewood ( Dalbergia latifolia ) is a species of plant in the Fabaceae, a large tree producing hardwood, medium weight and high quality, rounded leaves, thin and broad pods, highly adaptive, grows in dry and rocky landscapes with lots of sunlight. D. latifolia has medium to large size, cylindrical stems, up to 40 m high with a ring of up to 2 m, the bark is brownish gray and slightly cracked longitudinally. The crown is dense, dome-shaped and sheds leaves. The leaves are compound and pinnate oddly with 5-7 strands that have different sizes and appear alternately on the shaft. The leaves are round or elongated in width or heart, the upper surface is green and the surface is pale green. The flowers are small, 0.5-1 cm long and clustered in panicles. The pods are green to brown when ripe and are elongated lanceolate, pointed at the base and tip. The pods have 1-4 seeds which are soft and brownish. Indian rosewood grows at elevations below 600 m,
2 comments
Read more

Bush sorrel (Hibiscus surattensis)

Bush sorrel ( Hibiscus surattensis ) is a plant species in Malvaceae, annual shrub, crawling on the surface or climbing, up to 3 meters long, thorny stems, green leaves, yellow trumpet flowers, grows wild in forests and canal edges, widely used for vegetables and treatment. H. surattensis has stems with spines and hairs, branching and reddish green. Petiole emerges from the stem with a straight edge to the side, up to 11 cm long, sturdy, thorny, hairy and reddish green. The leaves have a length of 10 cm, width of 10 cm, 3-5 lobed, each has a bone in the middle with several pinnate veins, sharp tip, sharp and jagged edges, wavy, stiff, green surface. Flowers up to 10 cm long, trumpet-shaped, yellow with a purple or brown or red center, solitary, axillary. Epicalyx has forked bracts, linear inner branches, spathulate outer branches. Stalks up to 6-7 cm. The seeds have a length of 3-3.5 mm and a width of 2.5 mm. Bush sorrels grow in pastures, marshes, abandoned fields and plantations,
8 comments
Read more

Lawe (Abroma augustum)

Lawe or devil's cotton ( Abroma augustum ) is a plant species in Malvaceae, a small tree or bush that is erect, up to 10 m tall but generally 2-3 m tall, stems and twigs covered with star hair that are sharp, brittle and cause skin itching, sometimes also with glandular hair. A. augustum has a single leaf, alternating, has a long stalk, a heart-shaped base, a pointed tip with a very variable base whose leaves near the base of the branch have a circular shape from the egg to the heart, 3-5 curves, diameter 20-37 cm, while the leaves near the tips of twigs have elongated shapes with smooth toothed edges. The flowers gather in cymes at the tips of the twigs or face leaves, 1-4 buds, 1-3 cm long stems and 6-8 mm bractea. Hanging flowers, 3-5 cm in diameter, 5 angles and 1-3.5 cm long stems. The petals have 5 leaves, share a deep, triangular, 15-20 mm long, 6 mm wide and greenish. The crown has 5 leaves, spoon-shaped, 2-3.5 cm long, 1 cm wide, dark purple or red or yellow, concave an
Post a Comment
Read more