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All Journal Sainmatika: Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam
Titi Tricahyati
Program Study of Plant Protection, Faculty of Agriculture, Sriwijaya University, Palembang, Indonesia
Agriculture, Biological Sciences & Forestry Chemistry Mathematics Physics

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Incidence of Banana Leaf-Rollers Caterpillar (Erionota thrax L.) Attack on Banana Mas (Musa acuminata), South Sumatra Arsi; Suparman; Harman Hamidson; Titi Tricahyati; Muhammad Luthfi Kusuma
Sainmatika: Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam Vol. 23 No. 1 (2026): Sainmatika : Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam
Publisher : Universitas PGRI Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31851/sainmatika.v23i1.21399

Abstract

Banana plants are among the tropical fruit crops widely cultivated in Indonesia. Banana cultivation is not immune to pests that can reduce banana production. One pest that attacks banana plants is the banana skipper (Erionota thrax L.). This pest is characterized by its method of attacking plants: rolling up banana leaves. Indonesia is known as one of the world's banana producers. The purpose of this study was to determine the level of attack caused by leaf-rolling caterpillars on plantain trees in South Sumatra. This study used the Purposive Sampling method, while the data collection technique was carried out by taking samples from banana plants (Musa acuminata) affected in South Sumatra, consisting of 5 regencies/cities, namely Banyuasin Regency, Muara Enim Regency, Ogan Ilir Regency, East Ogan Komering Ulu Regency, and Lubuk Linggau City. Based on the research results, the highest percentage of affected banana clumps was in East OKU Regency at 29%, while the lowest was in Lubuk Linggau City at 13%. The highest number of affected banana stems was in Ogan Ilir Regency at 26%, and the lowest was in Banyuasin Regency at 11%. The highest percentage of attacks was in Lubuk Linggau City at 46.67%, and the lowest was in Banyuasin Regency at 34.78%. Lubuk Linggau is located in the lowlands and midlands, which provide E. thrax with suitable temperatures, resulting in healthier banana plants and better food for the larvae.
Diversity of Pathogenic Fungal Leaf Blight on Corn Plants In Tanjung Pering Village, North Indralaya District Harman Hamidson; Arsi; Suparman; Titi Tricahyati; Septya Ayu Dwintha
Sainmatika: Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam Vol. 23 No. 1 (2026): Sainmatika : Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam
Publisher : Universitas PGRI Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31851/sainmatika.v23i1.21422

Abstract

The decline in corn production due to leaf blight reached 15%, equivalent to US$1.0 billion. In South Sumatra, the incidence of leaf blight disease in corn plants reached 98%. However, there have been few reports on the various pathogens that can cause corn leaf blight in South Sumatra. The purpose of this study was to determine the incidence of disease, the intensity of disease attack, and the diversity of fungal pathogens causing leaf blight disease in Tanjung Pering Village, North Indralaya, South Sumatra. The methods used in this study were observation of disease incidence and disease attack intensity, and purposive random diagonal sampling of plants. Observations were conducted at weekly intervals for five times, and the plant samples were identified at the Plant Pathology Laboratory of the Department of Plant Pests and Diseases. The results show that the incidence of corn leaf blight reached 100% with an average disease intensity of 28.60%. Identification of the pathogens causing the disease revealed differences in fungal species and numbers between observations. The diversity index for each observation was <1, and the dominance index was small or close to 0. The pathogenic fungi causing corn leaf blight consisted of B. sacchari, B. maydis, B. panici-miliacei, B. oryzae, H. juglandinum, H. microsorum, H. quercicola, H. velutinum, C. pseudobrachyspora, and C. dactyloctenicola. Thus, based on the observation results, the intensity of leaf blight disease attack was classified as low, with a low species diversity index and a low dominance index.
The Diversity of Diseases Affecting Long Beans (Vigna sinensis L.) in the Banyuasin Region Titi Tricahyati; Harman Hamidson; Erina Melani Sari; Arsi; Suparman
Sainmatika: Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam Vol. 23 No. 1 (2026): Sainmatika : Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam
Publisher : Universitas PGRI Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31851/sainmatika.v23i1.21502

Abstract

Long bean (Vigna sinensis L.) is a widely cultivated legume in Indonesia, offering significant economic potential due to its ease of cultivation. However, its productivity is often hampered by major pathogens like Uromyces appendiculatus, which causes rust disease, and various mosaic viruses. Rust disease manifests as small brown powdery spots on leaves, while viral infections can severely reduce or even eliminate fresh pod yields. This field study aimed to identify the primary diseases affecting long beans, determine their causative agents, and distinguish their specific symptoms. The research employed a survey method through purposive sampling on farmers' land. Observations were conducted across several different plots using a diagonal sampling technique at multiple points to collect plant samples. The results indicated that both fungal rust and viral mosaic are the predominant diseases impacting local crops. This inventory provides essential data for farmers to better recognize and differentiate symptoms, ultimately supporting more effective disease management and safeguarding the economic value of long bean production in the region.
Co-Authors Arsi Erina Melani Sari Harman Hamidson Muhammad Luthfi Kusuma Septya Ayu Dwintha Suparman