RETENSI DAN EFEKTIVITAS BAHAN PENGAWET EKSTRAK DAUN CENGKEH (Syzygium aromaticum) PADA KAYU DURIAN (Durio zibethinus) TERHADAP SERANGAN RAYAP TANAH (Coptotermes sp.)
Abstract: Effectiveness of
natural substance as preservative agent is needed to be further observed. One
of the substances is extract of Glove (Syzygium aromaticum) leaf. This extract
was considered to be effective material on Durian (Durio zibethinus) wood
preservative against Subterranean termite (Coptotermes sp). The aims of this
study were compare the retention and the affectiveness of preservative
materials which extracted from Glove
leaf by using different method of extraction. This studi was done at Agro-technology
Laboratory of Agricultural Faculty, Tadulako University, over the period of
March and June 2014. Bioassay on Termite destruction was done at Maku Village,
Dolo of Sigi Regency. The experiment was arranged based on Completely
Randomized Design (CRD) in two different factorial patterns. The first factor
was different method on leaf extraction (A) i.e. by using ethanol (A1), and by
using distillated water (A2). While the second factor (B) was different time on
soaking material, i.e. 1 day soaking time (B1), and 3 days were soaking time
(B2). All units was performed as negative control. One percent of preservative
extract was applied on each experimental unit. The outcome of this study showed
that water content of axtract was 14,726% and the density was 0,463 g/cm3. The
highest retention value 0,1244 g/cm3 was recorded on the treatment of 3 days
ethanol extraction (A1B2), while the lowest value 0,0868 g/cm3 was detected on
the treatment of 1 day water extraction. The highest value on effectiveness (or
lowest rate on loss weight) 2,4075% was detected after the treatment by using 3
days ethanol extraction substance, while the lowest value 4,6818% was measured on control unit.
Penulis: Fitriyani N. Toleng, Erniwati,
Ariyanti
Kode Jurnal: jpkehutanandd140075
