Laboratory Evaluation of Several Chemical Protectants Against the Southern Cowpea Weevil, Callosobruchus chinensis, on Stored Dried Beans in Korea

1963 ◽  
Vol 56 (5) ◽  
pp. 588-591 ◽  
Author(s):  
Yong Ho Bang
Keyword(s):  
Laboratory Evaluation ◽  
Callosobruchus Chinensis ◽  
Cowpea Weevil ◽  
Southern Cowpea Weevil

scholarly journals Effect of high-temperature extracted plant material fume against southern cowpea weevil (Callosobruchus chinensis L.) (Coleoptera: Bruchidae) as a non-chemical novel fumigation technique

2020 ◽  
Vol 7 (1) ◽  
Author(s):  
B. D. Rohitha Prasantha
Keyword(s):  
High Temperature ◽  
Adult Emergence ◽  
Heat Extraction ◽  
Ocimum Sanctum ◽  
Callosobruchus Chinensis ◽  
Cowpea Weevil ◽  
Thermal Extraction ◽  
And Control ◽  
Southern Cowpea Weevil ◽  
Direct Toxicity

Abstract Background Fumes from high-temperature heated plant leaves containing volatile phytochemicals generated from Lantana camara, Cinnamomum zeylanicum, Azadirachta indica and Ocimum sanctum were tested for their insecticidal activity against adult southern cowpea weevil (Callosobruchus chinensis L.) and their F1 progeny production/emergence. Volatile phytochemicals containing fume was generated using a flameless dry heat extraction method similar to pyrolysis combustion without air supplement at 180 ± 5 °C. Insect mortalities were assessed up to 72 h after exposure to the different treatments of fumigation by plant-fume and control. Results All volatile plant-fume samples contained average of 16.3 ± 1.5% O2 and 5.8 ± 0.5% CO2 in the test jars. The F1 progeny emergence was estimated 30 days after treatment. After 36 h of exposure, L. camara showed the highest toxicity against C. chinensis, followed by O. sanctum, A. indica and C. zeylanicum, with LT50 values of 7.3, 9.4, 14.7 and 20.6 h, respectively. The volatile phytochemical containing plant-fume generated by A. indica and C. zeylanicum produced LT99 values that were not significantly different (P > 0.05) from each other. The F1 adult emergence from treated mungbean (Vigna radiata L.) samples was significantly inhibited by L. camara and A. indica volatile plant-fume compared to C. zeylanicum fume. However, plant-fume generated from all four plants exhibited effective direct toxicity and F1 progeny inhibition of more than 86%. Conclusion From the study, it can be concluded that volatile plant-fume treatment was highly lethal to C. chinensis and significantly reduced F1 progeny emergence. Therefore, phytochemicals obtained from thermal extraction technique can be used as an alternative technique to chemical fumigation of stored mungbean.

scholarly journals Biological Control Against the Cowpea Weevil (Callosobruchus Chinensis L., Coleoptera: Bruchidae) Using Essential Oils of Some Medicinal Plants

2014 ◽  
Vol 54 (3) ◽  
pp. 211-217 ◽  
Author(s):  
Righi Assia Fatiha ◽  
Righi Kada ◽  
Anouar Khelil ◽  
Juli Pujade-Villar
Keyword(s):  
Biological Control ◽  
Medicinal Plants ◽  
Essential Oils ◽  
Germination Rate ◽  
Callosobruchus Chinensis ◽  
Cowpea Weevil ◽  
Chick Pea ◽  
Males And Females ◽  
Germinating Seeds ◽  
Different Doses

Abstract Chickpea (Cicer arietinum L.) is a valuable foodstuff but unfortunately this legume is prone to insect attacks from the chick pea weevil (Callosobruchus chinensis L.). This serious pest damages the chickpea and causes decreases in the yield and in the nutritional quality. Biological control is being used to deal with this problem. We tried different doses of the essential oils of three new medicinal plants, namely Salvia verbenaca L., Scilla maritima L., and Artemisia herba-alba Asso to limit the damage of the chick pea weevil pest, and to protect consumer’s health. To determine the effect and efficiency of the oil, the tests were conducted using the different biological parameters of fertility, longevity, and fecundity, under controlled temperature and relative humidity (28°C and 75%). The effectiveness of organic oils was demonstrated. We tested these oils on the germination of seeds. The obtained results showed that the tested plant oils have a real organic insecticide effect. The essential oil of Artemisia proved most effective as a biocide; achieving a mortality rate of 100%. A significant reduction in longevity was observed under the effect of 30 μl of S. maritima (1.3 days) and S. verbenaca (2.8, 4.6 days), respectively, for males and females compared to 8 and 15 days for the control. For fecundity, an inhibition of oviposition was obtained using 30 μl of Salvia and Scilla essential oils. The test on the seed germination using different essential oils, showed no damage to the germinating seeds. The germination rate was 99%. These findings suggest that the tested plants can be used as a bioinsecticide for control of the C. chinensis pest of stored products.

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