<![CDATA[Abstract. Adiwena M, Kadatuan NR, Chairiyah N, Rahim A, Pradana AP, Rakib MRM. 2026. Suspected virus disease prevalence in Tarakan’s horticultural crops, Indonesia with observations on incidence and potential vector insects. Asian J Agric 10 (2): g100223. https://doi.org/10.13057/asianjagric/g100223. This study determined the prevalence and incidence of suspected virus diseases in horticultural crops in Tarakan City, North Kalimantan, Indonesia. Field surveys and sampling were conducted in each sub-district, followed by host suitability tests. In each cultivation area containing at least 500 plants, all plants were observed and the incidence of suspected virus diseases was recorded. Plants showing virus-like symptoms were tested for host suitability using mechanical sap inoculation (wounding method). Diagnosis was based on field observation of symptoms and on symptom reproduction after inoculation, without molecular or serological confirmation. Based on the symptoms observed, the suspected viruses were Pepper Yellow Leaf Curl Indonesia Virus (PepYLCIV), with up to 100% incidence in bird’s eye and large chili in North and West Tarakan; Tomato Yellow Leaf Curl Virus (TYLCV), with up to 100% incidence in tomato in Central Tarakan; Cucumber Mosaic Virus (CMV), with up to 100% incidence in cucumber; Tomato Yellow Leaf Curl Kanchanaburi Virus (TYLCKaV), with 100% incidence in eggplant; and Watermelon Mosaic Virus (WMV), with up to 5.15% incidence in watermelon. Bemisia tabaci and Aphis gossypii, both known potential vectors of plant viruses, were recorded in the symptomatic crops. B. tabaci was associated with chili, tomato, and eggplant, whereas A. gossypii was associated with cucumber and watermelon. These findings are preliminary, and molecular detection together with transmission testing of the potential vector insects will confirm the viral etiology and the role of these insects as vectors. Regular monitoring of the vectors and infected plants, together with Integrated Pest Management (IPM), is recommended to limit the spread of these suspected virus diseases.]]>
