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All Journal Agrica: Journal of Sustainable Dryland Agriculture Jurnal Agrotropika
Titik Nur Aeny
Program Studi Proteksi Tanaman, Fakultas Pertanian, Universitas Lampung, Bandar Lampung, Lampung
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry

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POPULASI, SERANGAN DAN DISTRIBUSI NEMATODA SISTA (Globodera spp.) PADA TANAMAN KENTANG DI KERTASARI DAN PANGALENGAN, BANDUNG Sahrul Ramadan Delina Putera; I Gede Swibawa; Titik Nur Aeny; Sudi Pramono; Ni Kadek Emi Sintha Dewi
AGRICA Vol. 19 No. 1 (2026): June
Publisher : Agriculture Faculty of Flores University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37478/agr.v19i1.6583

Abstract

Potato (Solanum tuberosum) is an important horticultural commodity in Indonesia, yet its production is often disrupted by plant-parasitic nematodes, particularly potato cyst nematodes (PCN) belonging to the genus Globodera. This study aimed to determine the population, damage intensity, and distribution pattern of PCN in potato cultivation areas in two sub-districts of Bandung Regency, West Java. Soil and root samples were collected from eight villages in Kertasari and Pangalengan sub-districts, followed by nematode extraction at the Laboratory of Plant Pest Science, Faculty of Agriculture, University of Lampung. The research was conducted from October 2024 to February 2025. The results showed that Globodera populations were significantly different among villages. The highest  PCN population on the root was recorded in Santosa Village, which was  97.2 individuals per gram of root, while the highest PCN  population in the soil occurred in Kertamanah Village, which was 232.4 individuals per 100 cc of soil. The damage intensity caused by PCN was classified as very high across all surveyed villages. Based on Iwao regression, the spatial distribution pattern of PCN was random in the study site. The findings indicate that Globodera infestation poses a serious threat to potato production in Bandung, necessitating effective management efforts to minimize potato crop losses.
KELIMPAHAN DAN KERAGAMAN NEMATODA PADA PERTANAMAN BAWANG MERAH (Allium cepa L.) DI LAMPUNG TENGAH Adela Maria Vianni; I Gede Swibawa; F.X. Susilo; Titik Nur Aeny; Ni Kadek Emi Sintha Dewi
JURNAL AGROTROPIKA Vol. 25 No. 2 (2026): Jurnal Agrotropika Vol 25 No 2, Oktober 2026
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v25i2.13301

Abstract

Shallot (Allium cepa L.) is an important horticultural crop whose productivity is influenced by nematodes. This study aimed to identify and analyze the abundance and diversity of nematode communities in shallot plantations in Central Lampung. The research was conducted from October 2025 to February 2026. Nematode samples were collected using a systematic zigzag sampling method in shallot plantations in Rejo Asri Village, Seputih Raman District, Central Lampung Regency. Samples were taken from three habitats: shallot plants, shallot plantation soil, and fallow soil near the shallot plantations. Nematodes were extracted from soil using decantation, sieving, and sugar-solution centrifugation methods, while extraction from plant tissue utilized a modified Baermann funnel method. Nematodes were identified to the genus level based on morphological characteristics. Community analysis included Prominence Value (PV), Margalef index (DMg), Shannon index (H’), evenness index (E), Simpson’s index (H₂), Bray–Curtis dissimilarity index, Jaccard similarity index, and the Michaelis–Menten model. The results revealed the presence of 28 nematode genera, comprising 13 plant-parasitic genera and 15 free-living genera. Diversity indices for the habitats were as follows: shallot plantation soil (S = 21, DMg = 3.16, H' = 2.32, H₂ = 0.87), fallow soil (S = 20, DMg = 2.75, H' = 2.48, H₂ = 0.90), and shallot plants (S = 10, DMg = 1.46, H' = 1.33, H₂ = 0.59). The maximum number of genera predicted by the Michaelis–Menten model was 29. The two habitats exhibiting the highest community similarity were shallot plants and shallot plantation soil, with a Jaccard Similarity (JS) of 40.9%. The dominant plant-parasitic nematode genera are Aphelenchoides, with an absolute density of 2.5 individuals per plant and a PV of 22.3, and Helicotylenchus, with an absolute density of 72.8 individuals per 300 cc of soil and a PV of 727.5.
Co-Authors Adela Maria Vianni F.X. Susilo I Gede Swibawa Ni Kadek Emi Sintha Dewi Ni Kadek Emi Sintha Dewi Sahrul Ramadan Delina Putera Sudi Pramono