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Toxicity of <i>Bacillus thuringiensis</i>-based Bio-insecticide on <i>Coptotermes curvinagthus</i> (Isoptera: Rhinotermidae) in Laboratory

Yulia Pujiastuti 1, Rohwati 1, Suwandi 1, Dwi Probowati 2, Suparman 1, and Arsy 1
1. Plant Protection Department, Faculty of Agriculture, Sriwijaya University, Palembang, Indonesia
2. Soil Science Department, Faculty of Agriculture, Sriwijaya University, Palembang, Indonesia
Abstract—Rubber tree termites Coptotermes curvinagthus (Isoptera: Rhinotermidae) is an important pest on rubber plantation. Control should be conducted. Bacillus thuringiensis-based bio-insecticide was proposed. The treatments were consisted of 4 serial of spore concentrations, i.e. 105, 106, 107 and 108 spores/ml, respectively. Chlorphyrifos 0.1% and aquadest were used as control. The objective of the study was to investigate toxicity of B. thuringiensis isolates SMR-04 to worker and soldier castes of C. curvinagthus in laboratory. The study was designed in Completely Randomized Design with 6 treatments and 5 replications. Results showed highest mortality in worker caste was achieved in the treatment of 108 spores/ml (65.77%) and thus in soldier caste was 47.20%. Consumption of feed on workers and soldiers were ranged from 2.2 to 5.2 g and 0.08-0.5 g respectively. Soldier caste cannot afford to eat naturally because the mouth part was reduced, therefore they must be assisted by the worker caste.
Index Terms—termites, Bacillus thuringiensis, bio-insecticide, toxicity

Cite: Yulia Pujiastuti, Rohwati, Suwandi, Dwi Probowati, Suparman, and Arsy, "Toxicity of Bacillus thuringiensis-based Bio-insecticide on Coptotermes curvinagthus (Isoptera: Rhinotermidae) in Laboratory," Journal of Advanced Agricultural Technologies, Vol. 5, No. 1, pp. 41-45, March 2018. Doi: 10.18178/joaat.5.1.41-45
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