Eucalyptus tereticornis (Red gum)
Viable seeds / kg (approx.): 372,000
Minimum purchase: 25 g
E. tereticornis is native to Australia
and Papua New Guinea. In natural conditions it can reach 45 m in height and 2 m
in diameter (DBH), with a straight trunk. In plantation it will normally reach smaller dimensions.
The species is suitable for pure
reforestation, in barriers, for restoration and immobilization of dunes and
erosion control. It is an important source of nectar for honey production and
the leaves are the source of the so-called "eucalyptus oil". The wood
is strong and durable, and it is used for firewood, coal, poles, mining
structures, sleepers and boards, among other uses. It has not been planted extensively
for sawmill timber.
In its natural habitat it grows at
altitudes from 0 to 1000 masl, with mean annual rainfall of 500-1500 mm. In
tropical zones, it has been planted at altitudes of 0 to 1500 masl, with mean annual
rainfall of more than 800 mm. It tolerates dry conditions.
It grows best in fertile soils,
deep, light, well drained, with neutral or slightly acid pH. It does not
tolerate saline or flood-prone soils.
Seeds and nurseries
It does not require
pre-germination treatments. Due to the small size of the seeds, germinators
should be used, with a loose substrate such as river sand, well washed and disinfected,
in which the seed is placed superficially. Germination occurs in a period of 15-20
days, reaching conditions for transplanting 1-2 weeks after germination. The
root is usually very long, so it must be pruned to about 3 cm in length. When
transplanting, be sure to make a hole deep enough in the substrate to avoid
curving up of the roots. Shade should be provided for the first 2-3 weeks after
transplanting, for instance using shade clothing (saran) 50%. The plants will be ready for field planting after 3 -
4 months or when they have a height of 25 to 30 cm. A couple of weeks
before planting out in the field it is recommended to reduce watering to
stimulate the lignification of the stems.
E. tereticornis is a relatively fast
growing tree; in favorable sites it has reached 35 m in height in 10 years,
while in bad places it can reach 15-18 m at the same age.
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