KEAWETAN ALAMI KAYU NANGKA (Artocarpus heterophyllus) TERHADAP SERANGAN MARINE BORERS DI KABUPATEN DONGGALA

Abstract

Indonesia is a maritime country, marine infrastructure such as ships and marine buildings is very important. The use of wood for this purpose comes from natural forests so it is necessary to find alternative wood from plantation forests. The species Artocarpus heterophyllus (wood jackfruit) from community forests was chosen because it has good durability. This study aims to determine the intensity of attack by marine borers on jackfruit wood based on variations in the axial direction and different levels of sea depth, determine the level of natural durability of jackfruit wood and types of wood borers in the sea. The results showed that the average attack intensity was the lightest and the heaviest in the axial direction, respectively, namely the base (0.49%), middle (1.7%), and tip (6.5%), the natural durability of jackfruit wood based on the level of attack intensity of marine borers was classified as In durable class I, factor A is the axial direction (base, middle, and tip) of jackfruit wood and factor B is the level of sea depth (5 cm, 10 cm, and 42 cm) and the interaction between the two factors has a significant effect on the intensity of marine borers attack. -types of marine borer organisms found in mangrove waters, Donggala district that have been identified are Littorina obtusata, Teredo sp. and Trochus niloticus..