A Comparative Analysis of Heavenly Elixir (Tinospora rumphii boerl) Biopesticide Against Black Rice Bug (Scotinophara coarctata fabricus)

Abstract

INTRODUCTION

The Malayan black rice bugScotinopharacoarctata(Fabricus) or " ̃'itimnaatangya'' is one of the most common species of black bugs attacking rice plants in many agricultural towns and provinces. This study is a comparative analysis of heavenly elixir (T.rumphiiBoerl) biopesticide and synthetic pesticide against black rice bug.

METHODS

The vines of the heavenly elixir underwent drying, powdering, and soaking. The filtered extract was subjected to ethanolic extraction. Isolated extract was stored in a cool temperature. The mortality rate of the control and experimental group was gathered and compared. T-test was used to compare the mean of the two groups.

RESULTS

Since the t-computed value (4.1) is greater than the t-tabular value (2.306) at 0.05 level of significance with 8 degrees of freedom, then the null hypothesis (HÌ¥) is rejected. This means that there is a significant difference between the mean of the mortality rate of the bugs treated with heavenly elixirbio pesticide and synthetic pesticide.

DISCUSSIONS

Considering that the mean of the mortality rate of the experimental group (98.33) is greater than the mean of the control group (86.25), it implies that the heavenly elixirbio pesticide is more effective than the synthetic pesticide against black rice bug.