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All Journal Cropsaver : Journal of Plant Protection
Toto - Sunarto
Padjadjaran University
Biochemistry, Genetics & Molecular Biology

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Effect of Concentration of Entomopathogenic Nematodes (Steinernema spp.) to Bemisia tabaci Genn. (Hemiptera; Aleyrodidae) On Red Chili Plants Toto - Sunarto; Fahira Endaningsih Pubarianto
CROPSAVER Vol 4, No 2 (2021)
Publisher : Departemen Hama dan Penyakit Tumbuhan Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/cropsaver.v4i2.35979

Abstract

Bemisia tabaci is an important pest on red chili plants. The entomopathogenic nematodes Steinernema spp. has the potential to control insect pest populations. The purpose of this study was to obtain the concentration of Steinernema spp. the most effective in controlling B. tabaci on red chili plants. The experiment was conducted at the Greenhouse, Faculty of Agriculture, Universitas Padjadjaran, Jatinangor, from January to September 2020. The study used experimental methods in-vitro and in-vivo. The in-vitro experiment used a completely randomized design to observe the mortality of B. tabaci. The in-vivo experiment used a Randomized Block Design to observe the population of B. tabaci. The experiment consisted of seven treatments and four replications. The treatments consisted of: control (without Steinernema spp.), 50, 100, 150, 200, 250, and 300 IJ/ml (IJ = third infective juvenile). Each treatment was infested with 20 second nymphs B. tabaci and using red chili plants 30 days after planting. The results showed that the entomopathogenic nematode Steinernema spp. at a concentration of 300 IJ/ml, the most effective in causing mortality of B. Tabaci and at concentration of 100 IJ/ml can suppress B. tabaci  population on chilli plant at lower level in 12 days after application.
The Effectiveness of Entomopathogenic Nematode Steinernema spp. on Mortality of Lepidiota stigma F. (Coleoptera: Scarabaeidae) Toto - Sunarto; Aep Wawan Irwan
CROPSAVER Vol 2, No 2 (2019)
Publisher : Departemen Hama dan Penyakit Tumbuhan Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (452.141 KB) | DOI: 10.24198/cropsaver.v2i2.23947

Abstract

Integrated Pest Management (IPM) is an alternative way to reduce use of synthetic pesticides.  One of them is using the natural enemy of insect pests, such as predatory insects, parasitoid, and entomopathogenic nematodes. So far the control of Lepidiota stigma F. in sweet potatoes carried out with synthetic insecticides that has negative impact to the environment.  Another alternative of L. stigma control with entomopathogenic nematodes (Steinernema spp.). This study aimed to obtain Steinernema spp. concentration that effective against mortality of L. stigma larvae. This experiment was conducted at Plant Nematology Laboratory, Faculty of Agriculture, Universitas Padjadjaran from Februari - August 2019. The research used was experiment method with Completely Randomized Design consisted of six treatments and five replications. The treatment were Steinernema spp. concentration of  0,  50,  100,  150,  200 IJ ml-1 of water, and Karbofuran dose of 15 kg ha-1 (0.002 g / 12.56 cm2). The results showed that Sterinernema spp. has an effect on mortality of Lepidiota stigma larvae at 24 HAA (Hours After Application) and 48 HAA.  Steinernema spp. at  concentration of 150 IJ ml-1 capable effectively causing the mortality of Lepidiota stigma larvae of 68% at 48 HAA.
Co-Authors Aep Wawan Irwan Fahira Endaningsih Pubarianto