ASSESSMENT OF VARIOUS TYPES OF WOOD VINEGAR AS BIOPESTICIDE AGAINST APHIDS (Aphis spp.)

Wood vinegar was the farmers long awaited answer for lesser input in agriculture like a cheaper pesticide, because it can be a substitute for the expensive synthetic chemicals that they had been using. But they do not know what kind of wood vinegar they will use because of lack of information. So, this study was conducted to prove what kind of wood vinegar is the best for controlling pest infestation especially Aphids. Furthermore, its intent is to determine which treatment has higher Mortality Percentage when sprayed and observe if there is a morphological change in aphid after they were sprayed by these treatments. This study used a Completely Randomized Design having four treatments with four replications. In each replication, there were one hundred sub-replicates. The treatments were Control (Melation), Bamboo wood vinegar, Ipil-ipil wood vinegar and Neem wood vinegar. Treatments were sprayed and observed after every two hours in 24 hours. After the laboratory test, the aphids were then observed if there were morphological changes using stereomicroscope. Data gathered were Mortality Percentage every two hours for twenty four hours and morphological changes of aphids after being sprayed by various types of wood vinegar. There was highly signficant difference among treatments for the Mortality Percentage of aphids. All tested wood vinegars were effective bio pesticide against aphids, although the Mortality Percentage of aphids treated with T2 (Bamboo wood vinegar) lower than that of T3 (Ipil-ipil wood vinegar) and T4 (Neem wood vinegar) with 86.81% , 96.62% and 97.48%, respectively. Furthermore, there are also evident changes in the morphology of aphids after they were observed under the stereomicroscope. Therefore, Ipil-ipil and Neem wood vinegar are recommended as bio pesticides against aphids.