Cayenne Pepper, Sweet Pepper and Long-cayenne Pepper Oil Extracted with Different Solvents as Fumigant Entomocide against Sitophilus zeamais Infestation
| Autor: | Mercy Olayinka Oni |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Integrated pest management
biology Chemistry Weevil Sitophilus fungi Extraction (chemistry) food and beverages biology.organism_classification medicine.disease_cause CAPSICUM SPP food.food Cayenne pepper Horticulture food Agronomy Pepper Infestation medicine lipids (amino acids peptides and proteins) |
| Zdroj: | International Journal of Horticulture. |
| ISSN: | 1927-5803 |
| Popis: | N-hexane, ethanol and acetone extracts of cayenne pepper, sweet pepper and long cayenne pepper were used as fumigant under laboratory at ambient temperature of (28±2)˚C and (75±5)% relative humidity against infestation of Sitophilus zeamais on stored maize. The fumigant toxicity of the extracts were tested at dosage of 0.5 ml, 1.0 ml, 2.0 ml, 5.0 ml and 10.0 ml and their effect was observed on the adult mortality and emergence as well as the ability of the insects to cause seed damage and weight loss. Regardless of the solvent used for the extraction of the peppers, cayenne pepper extract significantly effect high weevil mortality than other extracts. The n-hexane extract of this pepper was the only extract that achieved 100% mortality even at lowest dosage (0.5 ml) and it’s effect was significantly (p long cayenne pepper>sweet pepper while they were rated based on the solvent used for their extraction as n-hexane extract>ethanol extract>acetone extract. Therefore, the n-hexane extract of the three peppers could be introduced into pest management techniques since Capsicum spp. used showed high insecticidal effect and they were medicinal in nature. Nevertheless, n-hexane extract of cayenne pepper was recommended as fumigant for effective control of S. zeamais in storage. |
| Databáze: | OpenAIRE |
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