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All Journal Jurnal Biologi Tropis
Dewi, Pervitara Arum
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology

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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.
Maize Crop Agronomy for Enhancing Productivity in the Dryland of West Nusa Tenggara Dewi, Pervitara Arum; Sudharmawan, A. A.; Sudantha, I Made
Jurnal Biologi Tropis Vol. 24 No. 2b (2024): Special Issue
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.v24i2b.8043

Abstract

Dryland agriculture continues to face numerous challenges that need resolution. Maize has emerged as an alternative food source, with additional uses as animal feed and biofuel. However, maize cultivation in the drylands of West Nusa Tenggara has yet to fully apply agronomic principles, resulting in suboptimal yields. This literature review evaluates key agronomic factors affecting maize productivity in West Nusa Tenggara’s drylands. The most suitable and marginally suitable land for maize among the three regencies was found in East Lombok, with soil pH (H2O) ranging from 5.8 to 7.4 (slightly acidic to neutral), total nitrogen (N) between 0.09–0.19% (low to moderate), available phosphorus (P) between 14.4–54.76 ppm (high to very high), and organic carbon (C) ranging from 0.4–0.8% (low). Soil texture includes sand (62.67–76.00%), silt (20.13–30.79%), and clay (2.59–11.71%), indicating a sandy loam to loamy sand composition. Seed varieties used in East Lombok include Bima 20 URI, Nasa-29, JH-37, Bima-14 Batara, JH 27, and HJ 21; West Sumbawa uses Bisi 18 and Jakarin; while North Lombok uses Gumarang, Lamuru, and NK 212. Traditional water conservation techniques are practiced in East Lombok and West Sumbawa, while sprinkler irrigation is employed in North Lombok. Fertilizers, including Trichocompost, Phonska, Urea, and rice husk biochar, are applied across East Lombok, North Lombok, and West Sumbawa. Integrated pest management (IPM) is applied in East Lombok and North Lombok to control fall armyworm (Spodoptera frugiperda) using refugia plants, and in West Sumbawa, microcontroller technology is used to manage monkey pests.
Co-Authors Akram, Ahdiatsa Hairi I Made Sudantha Ilwati, Uun Muhammad Sarjan Sudharmawan, A. A. Wahyuni, Srilah Nora