BIOINSECTICIDE GRANULAES FROM THE LEAF OF WARU (Hibiscus tiliaceus) ON Spodoptera litura F. TO INCREASE PRODUCTIVITY OF PAKCOY (Brassica chinensis)
Kristanti Indah Purwani, Cindy Widya Aulia, Annisa Nur Fitriani

Departmen of Biology, Faculty Sains and Analitical Data, Institut Teknologi Sepuluh Nopember Surabaya

Abstract

Waru plant (Hibiscus tiliaceus) is a plant that contains active compounds of saponins, alkaloids, and flavonoids that can be used as bioinsecticides. This study aims to determine the effect of bioinsecticide application from the active ingredient of hibiscus leaf (Hibiscus tiliaceus) with granules formulation in preventing the attack of armyworm (Spodoptera litura) on pakcoy (Brassica chinensis) plants. The method used in this research is maceration extraction then the extract is compressed into granular form with different formulations and the addition of several additional ingredients, K1 is a water control treatment, K2 is a control treatment of hibiscus leaf extract with a concentration of 45%, K3 is a control treatment of additives with water composition 45 ml + cassava flour 25 g + CMC 20 g + husk 10 g, P1 is treatment 1 with the composition of hibiscus leaf extract 45 ml + cassava flour 20 g + CMC 25 g + husk 10 g, P2 is treatment 2 with extract composition hibiscus leaf 45 ml + cassava flour 25 g + CMC 25 g + husk 5 g, and P3 is treatment 3 with the composition of hibiscus leaf extract 45 ml + cassava flour 25 g + CMC 20 g + husk 10 g. The test of the effectiveness of bioinsecticides was carried out by spraying application of liquefied granules at a dose of 20 g/l. The research design used was a completely randomized design (CRD) with 3 repetitions. Observational data were analyzed using one-way ANOVA statistical test. From the results of the research that has been carried out, it is found that the characteristics of good granules to be used as biopesticides are hard textures, dark green in color with irregular round shapes. Administration of bioinsecticides with granular formulations from hibiscus leaf extract (H. tiliaceus) gave an effective effect on the mortality of armyworm larvae (S. litura F.) in pakcoy (B. chinensis) with a mortality of 43% at P1, 47% at P2 and 43% at P3. The administration of bioinsecticides with granular formulations from hibiscus

Keywords: Bioinsecticide, Hibiscus tiliaceus, Spodoptera litura

Topic: Botany