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All Journal Jurnal Agroekoteknologi Agrotechnology Research Journal Journal of Applied Agricultural Science and Technology
Ibrahim, Mukhlis
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Agriculture, Biological Sciences & Forestry

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UJI BEBERAPA KONSENTRASI EKSTRAK TEPUNG AKAR TUBA (Derris elliptica Benth.) TERHADAP MORTALITAS LARVA Helicoverpa armigera Hubner (Lepidoptera: Noctuidae) HAMA PADA JAGUNG MANIS Ibrahim, Mukhlis; Rustam, Rusli
Jurnal Agroekoteknologi Vol 12, No 2 (2020)
Publisher : Jurusan Agroekoteknologi Fakultas Pertanian Untirta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33512/jur.agroekotetek.v12i2.10854

Abstract

Corn is one of the important food crops besides rice. The variety of corn that is in great demand by the public is sweet corn (Zea mays saccharata Sturt). The main pest that often attacks sweet corn plants is Helicoverpa armigera Hubner. Pest control can be carried out using botanical insecticides of tuba roots (Derris elliptica benth.). This research aims to obtain a concentration of tuba root flour extract which was effective against Helicoverpa armigera Hubner. The research was conducted at the Plant Pest Laboratory and Organic Chemistry and Natural Material Laboratory, Faculty of Engineering, Riau University. It was started from January to March 2020. This research used a completely randomized design(CRD) with five treatments and four replications so that 20 experimental units were obtained. The treatments given were various concentrations of tuba root flour extract, namely: 0%, 0.25%, 0.50%, 0.75% and 1%. The results showed that the difference in the concentration of tuba root flour extract had a significant effect on killing Helicoverpa armigera larvae. The concentration of 0.75% is effective in controlling Helicoverpa armigera larvae because it has been able to kill Helicoverpa armigera by 85% with the fastest initial death time at 3.75hours, lethal time 50 at 17.00 hours after application. Keywords: Root tuba, Helicoverpa armigera, Botanical insecticide
Lethal Concentration and Lethal Time Botanical Insecticide Tuba Root Extract Against Spodoptera frugiperda J. E. Smith Larvae Ibrahim, Mukhlis; Rustam, Rusli
Journal of Applied Agricultural Science and Technology Vol. 8 No. 1 (2024): Journal of Applied Agricultural Science and Technology
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jaast.v8i1.181

Abstract

Utilization of botanical insecticides is an option to control environmentally friendly Spodoptera frugiperda  pests. The purpose of this study was to determine the lethal concentration (LC) and lethal time (LT) of botanical insecticides on the third instar larvae of S. frugiperda in the laboratory. The experiment was conducted at the Applied Entomology Laboratory, Faculty of Agriculture, Gadjah Mada University, Yogyakarta, over a period of 3 months, from September to November 2022. The concentration treatments used were 0, 2, 4, and 8 ml/L of water. The experiment was designed using a completely randomized design (CRD) with 4 treatments and 5 replications. Larval mortality data was processed using probit analysis in order to determine the value of Lethal Concentration (LC50 and LC95) and Lethal Time 50 (LT50). The results showed that the tuba root powder extract concentration showed LC50 and LC95 namely 0.07% equivalent to 0.7 ml/L of water and 1.53% equivalent to 15.3 ml/L of water. Meanwhile the concentration of 8 ml/L of water extract of tuba root flour causes LT50 of S. frugiperda larvae causing time to tend to be faster at 1.86 days or 44,64 hours after application. Botanical insecticides of the tuba root extract concentration show high efficacy against S. frugiperda larvae so that they can be recommended as a component for integrated pest management (IPM).
Toxicity Tests of Botanical Pesticide Made of Tuba Root Extract on Spodoptera frugiperda Ibrahim, Mukhlis; Martono, Edhi; Indarti, Siwi
Agrotechnology Research Journal Vol 7, No 2 (2023): Agrotechnology Research Jurnal
Publisher : Perkumpulan Agroteknologi/Agroekoteknologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/agrotechresj.v7i2.77815

Abstract

One of the main pests that attack corn plants is Spodoptera frugiperda J. E. Smith. The usual control of this pest is by using synthetic insecticides, but the continuous or unwise use of synthetic insecticides will have negative impacts on humans and the environment, therefore alternative insecticides that are safe and environmentally friendly, such as tuba root (Derris elliptica Benth) are needed. This study aims to determine the effect of tuba root extract phytopesticide on S. frugiperda larvae and to determine the concentration of tuba root extract that is effective in controlling S. frugiperda larvae, as well as the eating inhibition power of S. frugiperda larvae after administration. The research was conducted at the Applied Entomology Laboratory, Faculty of Agriculture, Universitas Gadjah Mada, Yogyakarta from September to November 2022. The treatment concentrations used were 0, 2, 4, and 8 mL.L-1 of water. The experiment employed Completely Randomized Design (CRD) with four treatments and five replications. The results showed that the concentration of 4 mL.L-1 of water is an effective concentration for controlling S. frugiperda larvae and can cause a total mortality of 82% with an initial death of 19 hours, Lethal Time 50 at 39.20 hours after application. In addition, the concentration of tuba root powder extract of 8 mL.L-1 of water appeared to be the highest in reducing the appetite of larvae compared to other treatments with a rate of 17.03%. This showed the highest reduction in larval appetite compared to other treatments. A small amount of feed eaten means a high level of antifeedant activity.
Co-Authors Edhi Martono Rusli Rustam Siwi Indarti