Cashew nut damage caused by merchant grain beetle (Oryzaephilus mercator (Fauvel)) infestation
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Abstract
Currently, cashew nut production is found to be infested by Merchant grain beetle (Oryzaephilus mercator (Fauvel)) during storage which caused deteriorated cashew and becoming unmarketable. In this experiment, the research aims to assess the damage from insect infestation. In experiment 1, the damage of merchant grain beetle (MGB) was examined in laboratory condition. Fifty (MGB) infested with 150 gram of cashew nut was evaluated in 3 months. The moisture content, amount of dust and damages of cashew nut was 18.24%, 33.39% and 100%, respectively. The result indicated that 150 gram of cashew kernels can be lost by the 50 MGB infested in 3 months. In experiment 2, the damage of cashew nut stored by cashew community enterprise was carried out with 4×3 factorial in CRD and 3 replications. No insect was released inside cashew nut packaging. Two factors included kernel characters; as full kernel, split kernel and broken kernel and the factor of storage time (1, 2 and 3 months) were analyzed. Moisture content of cashew nut stored for 3 months showed 5.95% which was slightly over the specification (5%). There was some MGB infested and number of dust was 2.00% by weight. Cashew nut kernels infested by MGB was 26.64%. So the prevention or insect control should be done to prevent insect outbreak.
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References
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