| Summary: | Forest management with intensive silviculture which includes selection of
species, environmental manipulation, and integrated pest management essential in
order to sustainable production. Right direction have been made in forest
management by PT RAPP by mapping the soil up to the soil family level around
the concession. The study was conducted at four family land that is HPT�FI
(Hapluduluts fine), KDT�FI (Kandiudult fine), KDT�FL (Kandiudult fine loamy)
and KHT�FI (Kanhapludults fine) at 1, 2 and 3 years old, that aims to determine
the effect of physical and chemical soil properties on plant growth A.mangium.
Highest growth response in A. mangium aged 2-3 years obtained from soil
family HPT-FI by textured clay, soil with high clay texture have better fertility.
Others soil family KHT-FI textured sandy loam and both soil families KDT-FI
and KDT �FL textured clay loam had lower fertility than the HPT-FI. Chemical
properties that affect on growth is total bases and P available, chemical properties
contain the best are soil family HPT-FI, KHT-FI, KDT-FI and KDT-FL
respectively. Improvement of physical properties can be done with repair and
maintain humus (colloid) content and increase CEC soil which also repair
chemical properties, other improvements soil chemical properties made by liming
which aims to improve soil alkaline content and soil pH so nutrient of P becomes
available for plants.
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