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Sustainable
Palm Oil Practices >
Biodiversity
| Biodiversity |
There is a general perception that oil palm plantations,
owing to they being monocultures, are “devoid of life’.
Studies however have indicated otherwise. In a typical coastal
oil palm estate, a total of 268 species of flora and fauna have
been recorded.
Although most of these species are common to the
agricultural environment, relatively rare species like the leopard
cat Felis
bengalensis could be found. Bird species are also unexpectedly
high, wit 61 of the 87 species being breeding residents.
Notwithstanding
the inherent biodiversity of the oil palm plantation environment,
palm industry strives to encourage biodiversity in its plantations
through the following conservation and enhancement activities: |
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Conservation |
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Carrying out zero burning. By this practice, besides contributing
to a cleaner environment, soil organic matter, physical properties
and fertility are also enhanced. Such practices further conserve
if not improve soil biodiversity.
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Ensuring maximum conservation of soils by carrying out appropriate
land preparation techniques for road establishment, terracing,
and construction of silt-pits and bunds.
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Planting of leguminous cover crops and Vetiver and Guatemalagrass
to enhance soil fertility and further check soil erosion.
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Maintenance of natural vegetation riparian border along rivers.
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Maintenance of permanent green belts at strategic
locations. This includes the steep areas with more than 25º slope
and other areas marginal for oil palm planting, e.g., wetlands
and swamps.
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Maintenance of water catchment areas and water bodies.
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Enhancement |
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Crop diversification. These included the planting of agroforestry
species in forested reserves, steep or lateritic land and land
near catchment areas. Where suitable, commercial species like teak
(Tectonia grandis), Sentang (Azadirachta excelsa) and
bamboo (Bambusa spp) are planted around and within cultivated
fields. Medicinal and culinary herbal plants are also in the process
of being domesticated for planting in estates.
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Soil biodiversity is enhanced by establishment of creeping leguminous
covers such as Mucuna bracteata, Pueraria phaseoliodes and Calopogonium
caeruleum through soil conservation and enhancement of beneficial
rhizobium interactions.
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Practice of inoculating all nursery seedlings with arbuscular
mychorrizal fungi (AMF) for the purpose of enhancing vigour and
growth of plants and increasing tolerance to infection by Ganoderma basal
stem rot when planted out in the field. AMF inoculated seedlings
are expected to increase levels of the beneficial AMF organisms
in the soil.
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The planting of beneficial plants like Euphorbia heterophylla,
Cassia cobanensis, Antigonon leptopus and Turnera subulata are
being aggressively pursued. Besides enhancing safe and natural
suppression of leaf pests in oil palm, flora biodiversity is
also increased.
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Emphasis on biological control. Wherever appropriate, use of
host specific entomopathogens like Cordyceps, Metarhizium and
virus is implemented. These will be complemented with release of
mass-bred predators for natural control of leaf pests like nettle
caterpillars.
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The use of the barn owl as the primary means of rat control in
oil palm. By this, use of chemical rodenticides has been reduced
by 70-100% in many oil palm plantations.
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By adoption of the above multi-faceted approach,
greater availability of flora and fauna have been encouraged in
estates in a sustainable manner. |
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