ALPHA TERPINENE ACTIVITY AS BIOINSECTICIDE ON RICE WEEVIL (Sitophilus oryzae L.) AND IT PROTEIN ....

The toxicity of alpha terpinene on rice weevil Sitophilus oryzae (L.) protein content and lipid peroxidation was investigated in a study (Coleoptera: Curculionidae). The dried, uninfested local rice was collected from a rice field in Ilesa, Nigeria's Osun state. The effects of Alpha-terpinene on Sitophilus oryzae survival were assessed using a bioassay. The biocidal efficacy of alpha-terpinene on the activities of CAT, SOD, GPx, AChE, and GST, as well as several of the antioxidant enzymes utilised on S. oryzae, were described. Except for the 10l dosage of the chemical, which recorded 36.67 percent death of the insect, all doses of the treatment resulted in greater than 40% mortality of the insect. Only 50 l of the compound was able to achieve 100% insect mortality after 48 hours of treatment, which was significantly (p0.05) different from other treatments. The compound's negative coefficient suggested that the higher the compound's dosage, the higher the insect's mortality rate. Only 40 and 50 l of the chemical were required to completely block the adult insect. The chemical differs from the control by a substantial amount (p0.05). The substance slowed the responses in the bug, reducing the activities and increasing the insect's death, according to the study.

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