Abstract
Spodoptera litura (Lepidoptera: Noctuidae) larvae are polyphagous insects whose populations cause damage to various types of plantations, horticulture, and food so that control efforts need to be done. One way to control the environment of environmentally friendly S. litura larvae is to use a plant-based insecticide, a mixture of A. squamosa leaf extract and C. domestica rhizome (test extract appendix). The purpose of this study was to determine the subletal effect of the test extract mixture on S. litura larvae, namely the duration of larvae and pupae stage, pupae weight, morphology and imago viability, and the ability of female imago to lay eggs to produce offspring. The test was carried out by the method of feed dip into the test extract mixture. Data on pupae weight were analyzed with ANOVA, followed by Duncan's further test with a 5% confidence level using SPSS 21 program. The results showed that the test extract mixture extended the stages of larvae and pupae, reduced pupa weight, imago wings did not develop fully, reduced imago size, and did not imago able to produce eggs. The results of this study could then be further tested on a greenhouse scale and photochemical analysis of a test extract mixture to determine bioactive compounds that act as plant-based insecticides.
Highlights
Spodoptera litura (Lepidoptera: Noctuidae) larvae is polyphagous insects that populations cause damage to many kinds of plantations, horticulture, and food, so it needed control technique
The results showed the mixed of experimental extracts could be extended the larval and pupal stadia, pupal weight reduction, the wings of adults were not fully developed, adult size reduction, and also adults were unable to produced eggs
Entomologi Indonesia V dan SymposiumQualitative and quantitative analysis of four species of Curcuma rhizomes using twice development thin layer chromatography
Summary
Sama menyebutkan bahwa tingkat kerusakan Peningkatan produk pertanian yang bebas dari pada tanaman kedelai akibat populasi larva S. residu insektisida kimia penting dilakukan di litura di Indonesia mencapai 23-45%. Tanaman lain menimbulkan resistensi pada serangga hama, yang berpotensi sebagai bahan insektisida tidak toksik pada serangga non target, tidak nabati adalah kunyit (Curcuma domestica persisten di lingkungan, menghasilkan produk Valeton) yakni pada organ rimpang. Insektisida nabati merupakan insektisida turmerone yang merupakan kelompok senyawa yang memiliki bahan bioaktif yang berasal dari sesquiterpen dan flavonoid yang diduga ekstrak organ tanaman yang ramah lingkungan berpotensi sebagai bahan aktif insektisida (Kumar & Sevarkodiyone, 2009; S Mann & E (Zhang dkk., 2008). Menurut Tenrirawe (2011) tanaman dari Balfas dan Willis (2016) mengemukakan bahwa anggota Famili Annonaceae berpotensi sebagai pemberian ekstrak rimpang C. domestica insektisida nabati.
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