Philippine E-Journals

INSECTICIDAL EFFICACY OF SMOKE VINEGAR AGAINST RICE BUGS

Rhea Joy Flora | Rodrigo Paglomutan Jr | Julius Vergara | Lilian Diana Parreño | Vivian Andaya

Discipline: agricultural sciences

 

Abstract:

The study was conducted under greenhouse condition at the Guimaras State CollegeBaterna Campus, Constancia, San Lorenzo, Guimaras from June to October 2017 to determine the insecticidal efficacy of smoke vinegar against rice bugs. Rice plants were used as culture media for rice bugs. Each of potted rice was enclosed in white fine mesh net where the rice bugs were introduced and cultured. There were four (4) treatments replicated five (5) times arranged in Complete Randomized Design (CRD). Treatments used were the following: Treatment A (0% concentration of smoke vinegar (CSV), Treatment B (10% CSV), Treatment C (20% CSV), Treatment D (30% CSV). Each experimental treatment had ten (10) cultured rice bugs for testing where each rice bug was treated independently. Results showed that the smoke vinegar was effective in controlling rice bugs. Fifty (50%) mortality was observed 10 minutes after the treatment was introduced particularly at the 30% level of concentration. The probability of initiation (Probit) analysis showed that the smoke vinegar has a lethal dose 50 (LD50) at 8.5% concentration within 10 minutes after application. The results further showed that smoke vinegar can be used as alternative organic insecticide against rice bugs. The 10% concentration of smoke vinegar was highly recommended.