DIAGNOSIS FAKTOR PENGHAMBAT PERTUMBUHAN JATI (Tectona grandis L.F) PADA TANAH PODZOLIK MERAH KUNING
Abstract: Teak is plant much
planted by people in Pengaron District Banjar regency South Kalimantan
Province, for forest and land rehabilitation. but the actually growth of teak
of ages between 3,5 to 4 years old at reddish yellow podzolik don’t have
uniform growth, moreover to their growth is checked. The main goal of the
research is to find out impeded jati growth in reddish yellow podzolik soil.
the research methode uses health plant monitoring by Alexander (1996),
identifying physical and profile root system by weaver (1959) in coster (1981)
and related with soil physical and chemical properties. The result of the
research are the haelth monitoring was 43 % plant have physical plant growth
damaged as injured, broken, pest and
desease of plant, alteration of colour leves and weeds. The vertikal
root is not deep in development because thin solum (<45 cm), 62,58 %
horizontal spread of roots cause nutrient competition between weeds and jati
plant. A lot of mechanical barier such
as stone near the soil surface that cause the root canot good development
(vertical or horizontal root developing), developing root can not spread all
soil side. the hight of acidity soil while the teak plant do not suit with
higth acidity. The poor of phosphore in the land not support for the teak’s
life. In general with organic matter, cation excehangeble capacity, kalium and
nitrogen have level of. less cause
disturbance of teak growth. The maintenance of the teak plants were very bad so
the teak plant is disturbed by weeds.
Key Words: Teak, Checked Plant
Growth
Penulis: Yusanto Nugroho
Kode Jurnal: jpkehutanandd090014
