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All Journal Agrovigor: Jurnal Agroekoteknologi
Dewa Gede Wiryangga Selangga
Udayana University
Agriculture, Biological Sciences & Forestry

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Symptom variation and disease severity of Sweet potato leaf curl virus on sweet potato in Gianyar Ni Kadek Sattvika Griyaningsih; Listihani Listihani; I Gusti Ayu Diah Yuniti; Putu Lasmi Yulianthi Sapanca; Ni Putu Eka Pratiwi; Ni Putu Pandawani; Dewa Gede Wiryangga Selangga
Agrovigor Vol 16, No 1 (2023)
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/agrovigor.v16i1.19044

Abstract

Sweet potato production fluctuates every year, one of the factors causing the decline in production is the presence of pests and diseases. Sweet potato leaf curl virus (SPLCV) has been reported to infect sweet potatoes in Indonesia in 2022. Until now, there is no information regarding the variation in symptoms and severity of SPLCV disease in sweet potatoes. Therefore, this study aims to analyze the variation in symptoms and severity of SPLCV disease in Gianyar, Bali. The research was carried out directly in the field with observational parameters such as symptoms variation, incidence and disease severity. Observations were made every week when the plants were 63 to 91 days after planting (DAP). The results showed that SPLCV causes a variety of symptoms in the form of mild vein clearing, severe vein clearing, upward vein clearing, and downward vein clearing. The incidence and severity of the disease has increased every week. The incidence and severity of the disease were highest when the plants were 91 DAP, namely 73.33% and 40%, respectively. The high incidence and severity of the disease in the field is due to the use of stem cuttings from previous plants which may have been infected with SPLCV and whitefly vectors are always found in the field.
Diseases Incidence and Severity of Sweet potato feathery mottle virus in Sweetpotato in Gianyar Regency, Bali Ni Kadek Sudani Putri; Listihani Listihani; I Gusti Ayu Diah Yuniti; Putu Lasmi Yulianthi Sapanca; Farida Hanum; Ni Putu Pandawani; Dewa Gede Wiryangga Selangga
Agrovigor Vol 16, No 2 (2023)
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/agrovigor.v16i2.19968

Abstract

Sweet potato feathery mottle virus (SPFMV) (Potyvirus) was first discovered in Indonesia in 2018. No one has reported information about the incidence and severity of SPFMV disease. Therefore, this study aims to determine the incidence and severity of SPFMV in Gianyar, Bali. The research was carried out directly in the field with observational parameters such as symptoms, incidence and disease severity. Observations were made every week when the plants were 63 to 91 days after planting (DAP). The results showed that SPFMV causes purple ringspot symptoms. The incidence of the disease did not increase when the plants were aged 63 to 91 DAP, while the severity of the disease increased every week. The highest incidence and severity of the disease were 70% and 20.7%. The main cause of SPFMV infection in the field is probably due to the continuous use of stem cuttings from previous crops.
Co-Authors Farida Hanum I Gusti Ayu Diah Yuniti Listihani Listihani Listihani Listihani Ni Kadek Sattvika Griyaningsih Ni Kadek Sudani Putri Ni Putu Pandawani Ni Putu Pandawani PRATIWI, NI PUTU EKA Putu Lasmi Yulianthi Sapanca Putu Lasmi Yulianthi Sapanca