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All Journal Jurnal Biologi Tropis
Wahyuni, Srilah Nora
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology

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Parasitoids and Predators as Biological Agents against White Stem Borer (Scirpophaga innotata) Arum Dewi, Pervitara; Wahyuni, Srilah Nora; Ilwati, Uun; Akram, Ahdiatsa Hairi; Sarjan, M.
Jurnal Biologi Tropis Vol. 24 No. 3 (2024): July - September
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i3.6976

Abstract

One of the primary challenges in rice cultivation is the disturbance caused by pest infestations. Among the pests that frequently cause damage to rice plants is the white rice stem borer (Scirpophaga innotata). The life cycle of Scirpophaga innotata comprises egg, larva, pupa, and adult stages. This article is based on a literature review and discusses the natural enemies most commonly encountered at each stage of the Scirpophaga innotata life cycle. The findings of this article can be summarized as follows: Natural enemies of the white rice stem borer during the egg stage include parasitoids such as Trichogramma japonicum Ashm., Tetrastichus schoenobii, and Telenomus rowani, as well as the predator Conocephalus sp. During the larva-pupa stage, parasitoids such as Apantheles sp., Bracon sp., Tropobracon sp., and Temelucha bigutella are present, along with predators like Miscrapis crocea and Harmonia octomaculata. Regarding the adult stage, parasitoids were not found to be natural enemies of adult S. innotata. However, the most commonly encountered predators include Coccinella transversalis (Thunberg) and Paederus sp.
The Potential of Natural Enemies as Biological Control Agents for Various Pests on Water Spinach (Ipomoea aquatica F.) Wahyuni, Srilah Nora; Ilwati, Uun; Akram, Ahdiatsa Hairi; Dewi, Pervitara Arum; Sarjan, Muhammad
Jurnal Biologi Tropis Vol. 24 No. 3 (2024): July - September
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i3.6996

Abstract

Arthropods have the potential as biological control agents for various pests in kale plants. Some arthropod species have potential as natural enemies for biological control of plant pests due to their abundance and availability in the ecosystem. Some natural enemy arthropods consist of insects and spiders. Natural enemies found in the location of West Lombok District, NTB act as predators and parasitoids of pests on kale plants. The number of orders found were Araneae, Coleoptera, Hemiptera, Odonata and Hymenoptera. Four orders act as predators and one order, Hymenoptera as parasitoids. Natural enemy arthropods found that have the potential as natural enemies of pests in kale plants were found as many as 10 species, namely Argiope catenulate, Cicurina sp.., Oxyopes attenuates, Lepthypanthes tenuis, Cheilomenes sexmaculata, Coreus Marginatus, Leptoglossus occidentali sp., Onychogomphus forcipatus, Agriocnemis pieris, and Doryctobracon areolatus. While in Ogan Ilir District, South Sumatra, 1 species was found that acts as a natural enemy of the Hemiptera order, Gonocerus acuteangulatus.
Potensi of Tobacco Stem Insecticide as Pest Control in Crops Wahyuni, Srilah Nora; Sudarmawan, A. A.; Sudantha, I Made
Jurnal Biologi Tropis Vol. 25 No. 1 (2025): Januari - Maret
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i1.8053

Abstract

Tobacco is one of the most widely cultivated commodities in West Nusa Tenggara (NTB), especially Virginia tobacco. The leaf part is utilized as the main raw material in the cigarette industry. However, other parts of the plant, such as tobacco stems, are generally not used and only become agricultural waste that has no economic value, and has the potential to pollute the environment. In fact, tobacco stems have great potential as a vegetable insecticide that has proven effective in controlling various types of pests. This study aims to explore the potential of tobacco stems as a vegetable insecticide in pest control. The method used is a literature review by referring to various sources, including scientific journals, books, news, and related research and implementation. The results showed that tobacco stems contain secondary metabolite compounds, such as nicotine, saponins, flavonoids, and terpenoids. These compounds function as contact poisons, repellents, and disruptors of pests' metabolic, nervous, and respiratory systems. As a result, these compounds can cause body damage, inhibit the life cycle, and even death in insect pests, such as Aphis sp. aphids, Bemisia tabaci, Plutella xylostella, and other pests. In conclusion, tobacco stem extract is an effective solution for controlling pests in cultivated plants. Its use can reduce the population and intensity of pest attacks due to the content of chemical compounds that are toxic to insects.
Co-Authors Akram, Ahdiatsa Hairi Arum Dewi, Pervitara Dewi, Pervitara Arum I Made Sudantha Ilwati, Uun M. Sarjan, M. Muhammad Sarjan Sudarmawan, A. A.