“…The distribution of apple snails is more pronounced in Peninsular Malaysia due to the method of paddy cultivation, which is predominately (90%) by wet paddy method. Among the two species of apple snails, Pomacea maculata is more abundant than P. canaliculata in the states of Kedah and Perlis, the two major paddy growing regions which produce more than 50% of rice in Malaysia [4,5]. Hence, the present study was focused on P. maculata.…”
Golden Apple Snail (GAS) is the most destructive invasive rice pest in Southeast Asia. The cost of synthetic molluscicides, their toxicity to non-target organisms, and their persistence in the environment have propelled the research of plant-derived molluscicides. Most research efforts have focused on individual plant extracts for their molluscicidal potency against GAS and have not been proven to be entirely effective in rice field conditions. Selective combination of synergistically acting molluscicidal compounds from various plant extracts might be an effective alternative. In this direction, ethanolic extracts from six different plants (Neem, Tobacco, Nerium, Pongamia, Zinger, and Piper) were evaluated against Pomacea maculata Perry. Of the various combinations studied, a binary extract (1:1) of nerium and tobacco (LC 90 177.71 mg/L, 48 h), and two tri-herbal extract formulations (1:1:1) of (nerium + tobacco + piper) and (nerium + tobacco + neem) were found to be most effective, with LC 90 values of 180.35 mg/L and 191.52 mg/L, respectively, in laboratory conditions. The synergistic effect of combined herbal extracts resulted in significant reduction in LC 90 values of the individual extracts. The findings of this study demonstrate that the selective combinations of potent molluscicidal herbal extracts are effective for management of P. maculata under laboratory conditions.
“…The distribution of apple snails is more pronounced in Peninsular Malaysia due to the method of paddy cultivation, which is predominately (90%) by wet paddy method. Among the two species of apple snails, Pomacea maculata is more abundant than P. canaliculata in the states of Kedah and Perlis, the two major paddy growing regions which produce more than 50% of rice in Malaysia [4,5]. Hence, the present study was focused on P. maculata.…”
Golden Apple Snail (GAS) is the most destructive invasive rice pest in Southeast Asia. The cost of synthetic molluscicides, their toxicity to non-target organisms, and their persistence in the environment have propelled the research of plant-derived molluscicides. Most research efforts have focused on individual plant extracts for their molluscicidal potency against GAS and have not been proven to be entirely effective in rice field conditions. Selective combination of synergistically acting molluscicidal compounds from various plant extracts might be an effective alternative. In this direction, ethanolic extracts from six different plants (Neem, Tobacco, Nerium, Pongamia, Zinger, and Piper) were evaluated against Pomacea maculata Perry. Of the various combinations studied, a binary extract (1:1) of nerium and tobacco (LC 90 177.71 mg/L, 48 h), and two tri-herbal extract formulations (1:1:1) of (nerium + tobacco + piper) and (nerium + tobacco + neem) were found to be most effective, with LC 90 values of 180.35 mg/L and 191.52 mg/L, respectively, in laboratory conditions. The synergistic effect of combined herbal extracts resulted in significant reduction in LC 90 values of the individual extracts. The findings of this study demonstrate that the selective combinations of potent molluscicidal herbal extracts are effective for management of P. maculata under laboratory conditions.
“…또한 매우 활동적이어서 일부 국가에서는 수족관의 애완 동물 (Litsinger and Estano, 1993) (Lee et al, 2002). 특히, 습지나 수생식물에 대한 왕우렁이의 왕성한 초식성 먹이 습성에 의하여 유발되는 영향이 큰 (Saveanu and Martin, 2015) (Litsinger and Estano, 1993;Halwart, 1994;Naylor, 1996;Wu et al, 2005;Burlakova et al, 2010;Salleh et al, 2012;Horgan et al, 2014b;Schneiker et al, 2016;Carlsson, 2017)으로 인식되고 있다. 특히, 필리핀 등 동남아시아 지역 에서는 방제비용과 벼의 수량감소로 경제적 손실이 크다고 보고 되었다 (Ranamukhaarachchi and Wickramasinghe, 2006;Schneiker et al, 2016).…”
BACKGROUND: The golden apple snail(GAS, Pomacea canaliculata Lamarck) is an invasive freshwater snail. It has occurred 34 years since the introduction of the GAS to the Korea. The GASs have been used recently for weed control in wet rice cultivation. The GASs'adaptability to the environment of GAS has been improved and the GASs devour the young stage of the crops as well as weeds. METHODS AND RESULTS: We surveyed the survival area of the snails throughout the country during the winter seasons from 2000 to 2017 and crop damage due to GASs in 2017. Local maximum, minimum, and average air temperatures were monitored daily. The surveyed regions for the survival of the GASs in winters were Gangjin,
“…High demand of rice is higher compared with other staple food for majority of Asian people [1]. In rice producing country, Pomaceacanaliculata, golden apple snail (GAS) caused great losses when attacking young leaves and stem of paddy [2]. GAS has been introduced into different countries of Southeast Asia and North America from place of origin from South American habitats for aquarium pet or food trade before becomes major pests of paddy [3].…”
Golden apple snail, Pomaceacanaliculata (GAS) inflicted damage in major paddy granary areas in Malaysia with estimated infected area more than 17,000 ha. pesticide to control GAS infestation because its rapid effect. However, excessive appl had led to environmental pollution and hazard to applicators. There were many research on biopesticide had been done in order to reduce the dependency on synthetic pesticide.
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