| Project/Area Number |
01044097
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| Research Category |
Grant-in-Aid for international Scientific Research
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| Allocation Type | Single-year Grants |
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| Section | Joint Research |
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| Research Institution | Okayama University of Science (1990)
Okayama University (1989) |
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Principal Investigator |
YOSHIDA Toshiharu Fac. Lib. Arts Sci., Okayama University of Science Professor, 教養部, 教授 (50040895)
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| Co-Investigator(Kenkyū-buntansha) |
FX.WAGIMAN Gadjah Mada University, Fac. Agric., 助手
SUPRAPTO Man Gadjah Mada University, Fac・Agric., 助教授
KASUMBOGO Un Gadjah Mada University, Fac. Agric., 助教授
TAKAHASHI Fumiki Fac. Int. Arts Sci., Hiroshima University Professor, 総合科学部, 教授 (00026436)
NAKASUJI Fusao Fac. Agric., Okayama University Professor, 農学部, 教授 (20109317)
UNTUNG Kasumbogo Fac. Agric., Gadjah Mada University Ass. Professor
MANGUNDIHARDJO Suprapto Fac. Agric., Gadjah Mada University Ass. Professor
WAGIMAN Fx Fac. Agric., Gadjah Mada University Instructor
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| Project Period (FY) |
1989 – 1990
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| Project Status |
Completed (Fiscal Year 1990)
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| Budget Amount *help |
¥6,400,000 (Direct Cost: ¥6,400,000)
Fiscal Year 1990: ¥3,300,000 (Direct Cost: ¥3,300,000)
Fiscal Year 1989: ¥3,100,000 (Direct Cost: ¥3,100,000)
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| Keywords | Indonesia / Tribolium castaneum / Necrobia rufipes / Alphitobius diaperinus / Tana Traja / Traditional rice barn / alang / Effect of spider on infestation by insects |
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| Research Abstract |
In Indonesia the survey of insect fauna on the stored products was made and the loss of the products by the pests was estimated in cooperation with Gadjah Mada University, Yogyakarta, Indonesia. The most serious damage by the insects Rhyzopertha dominica, Tribolium castaneum and Sitophilus oryzae, was found on seed and polished rice stored in the modern Bulog granary, although so serious damage was not found in the traditional farmer storage on the whole. In the Bulog granary the stored rice was fumigated with methyl bromide or phosphine almost every three months.
In Tana Toraja, isolated for many centuries in the mountains of South Sulawesi, a bundle of rice ears was stored in the traditional rice barns, alang. No insect pests were found in the alangs with exception of the occasional occurrence of Sitotroga cerealella. In every alang many species of spiders, pseudoscorpions, cockroaches, ants, bugs and silverfishes were found. A great diversity of the community in the alang might inhibit well an outbreak of insect pests.
In the granary of Chinese grain dealer spiders wove a thich web over all over the rice bags heaped up in that place and protected the stored rice against the attacks of insect pests. The experiment on the effect of spiders on the insect infestation was carried on in the farmer barn in the suburbs ofYogyakarta and it was confirmed that spiders could control in some degree the attack of Sitophilus zeamais on the stored rice.
Necrobia rufipes was the most important pest on the copra stored in oil factory. Alphitobius diaperinus was one of the most serious insect pests of many kinds of stored products in Indonesia. No serious damage was found on stored tobacco and spices.
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