Abstract Naturally infested paddy rice was used to compare the effectiveness of polypropylene bags and hermetic storage containers over 12 months of storage in a warehouse. Insect pest identification as well as the infestation level, percentage of damaged grain, weight loss, and moisture content were evaluated. Five insect species associated with stored rice were identified during the storage period, namely lesser grain borer (Rhyzopertha dominica), red flour beetle (Tribolium castaneum), rice/maize weevil (Sitophilus spp.), angoumois grain moth (Sitotroga cerealella) and flat grain beetle (Cryptolestes ferrugineus). The lesser grain borer was the most predominant species with an average incidence above 70% after twelve months of storage, followed by the rice/maize weevil with an incidence of 17%. When compared to hermetic storage containers, polypropylene bag showed the highest mean infestation level with 233.3 individuals/kg after six months of storage, representing about 8-fold of the number of insects recorded in hermetic containers after six months of storage. In polypropylene container, the percentage of damaged grain and weight loss increased significantly achieving a maximum of 6.98% and 5.56% respectively, whereas using hermetic containers the highest percentage of damaged grain reached was 3.24% in polyethylene drum and the weight loss was 1.62% in GrainSafe bag. The results from the study show that the use of hermetic storage containers is a green alternative for safe storage of paddy rice, for 12 months without application of pesticides, bringing multiple advantages for smallholder farmers, lever food security and income generation for smallholder farmers and rice milling companies.

中文翻译：

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密封容器防治水稻（Oryza sativa L.）贮藏害虫的有效性

摘要 使用自然感染的水稻来比较聚丙烯袋和密封储存容器在仓库中储存超过 12 个月的有效性。对害虫识别以及侵染水平、受损谷物的百分比、重量损失和水分含量进行了评估。在贮藏期间鉴定出五种与贮藏水稻相关的昆虫种类，即小螟（Rhyzopertha dominica）、红粉甲虫（Tribolium castaneum）、水稻/玉米象鼻虫（Sitophilus spp.）、角螟（Sitotroga grainella）和扁平螟谷甲虫（Cryptolestes ferrugineus）。小螟是最主要的物种，储存 12 个月后平均发病率超过 70%，其次是水稻/玉米象鼻虫，发病率为 17%。与密封储存容器相比，聚丙烯袋在储存六个月后表现出最高的平均侵染水平，为 233.3 只/公斤，是储存六个月后密封容器中记录的昆虫数量的约 8 倍。在聚丙烯容器中，破损颗粒率和失重率显着增加，最高分别达到 6.98% 和 5.56%，而使用密闭容器，在聚乙烯桶中破损颗粒率最高为 3.24%，失重率为 1.62%。谷物安全袋。研究结果表明，使用密封储存容器是水稻安全储存的绿色替代方案，12 个月不使用农药，为小农带来多重优势，