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All Journal Seminar Nasional Lahan Suboptimal Asian Journal of Agriculture
A. Muslim
Jurusan Hama dan Penyakit Tumbuhan Fakultas Pertanian Universitas Sriwijaya Indralaya
Agriculture, Biological Sciences & Forestry Other

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Pengaruh Biostimulan terhadap Intensitas Powderymildew pada Labu Kuning di Desa Tanjung Pering, Kabupaten OganIlir Afifah, Miftah; Nisa, Nabila Aulia; Lisdiana, Lisdiana; Suwandi, Suwandi; Muslim, A.; Arsi, Arsi; Gunawan, Bambang; Irsan, Chandra; Pratama, Rahmat
Seminar Nasional Lahan Suboptimal Vol 11, No 1 (2023): Prosiding Seminar Nasional Lahan Suboptimal ke-11 “Optimalisasi Pengelolaan Lah
Publisher : Pusat Unggulan Riset Pengembangan Lahan Suboptimal (PUR-PLSO) Universitas Sriwijaya

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Afifah, M., Nisa.N.A., Lisdiana, L., Suwandi, S., Muslim,A., Arsi, A., Gunawan, B., Irsan, C., & Pratama, R. (2023). Impact of biostimulants on the intensity of powderymildew disease in yellow pumpkin in Tanjung Pering Village, OganIlir Regency. In : Herlinda S et al.(Eds.), Prosiding Seminar Nasional Lahan Suboptimal ke-11 Tahun 2023, Palembang 21 Oktober 2023. (pp.285-297).Palembang: Penerbit & Percetakan Universitas Sriwijaya (UNSRI).Pumpkin (Cucurbita moschata D.) can be used for various food preparations and contains high carotenoids. But now pumpkin production has decreased by 40% per year due to powdery mildew (Eryshipe cichoracearum). Symptoms of powdery mildew disease are marked white spots on the surface of the pumpkin leaves like flour. Biostimulants are believed to affect prevention of disease and pest attacks in the field. Purpose of this study was to determine the effect of biostimulants on the intensity of powdery mildew attacks on pumpkin and pest attacks. Research selected vegetative phase, observations made in the morning with the calculation of the percentage of powdery mildew disease using Natawigena formulation. There are 4 treatments, namely control, WB , RL and RL+WB , each treatment is 10 repetitions, 4x applications with a frequency of 1x a week, 5X observations.Results of the 2nd week the intensity of the disease increased due to rain after application with moist environmental conditions that support the growth of fungi. The effect of the 3 biostimulant treatments, can reduce the intensity of powdery mildew on pumpkin, was proven on the 3rd to 5th week, which is according to the data % severity of powdery mildew disease always decreases with a percentage of control that continues to increase. The percentage of influence of the greatest effectiveness in the treatment of WB, which is 95% powdery mildew and 2% Aulachopora similis pest control. In the application should see the weather conditions, so that the biostimulant applied can be optimally affected.
Comparative biology of bagworm larvae (Metisa plana) fed on oil palm (Elaeis guineensis) and malabar melastome (Melastoma malabathricum) ANGGRAINI, ERISE; ISTIQOMAH, HAWARYAH; IRSAN, CHANDRA; HERLINDA, SITI; MUSLIM, A.; SUWANDI, SUWANDI
Asian Journal of Agriculture Vol. 9 No. 2 (2025)
Publisher : Smujo International

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/asianjagric/g090214

Abstract

Abstract. Anggraini E, Istiqomah H, Irsan C, Herlinda S, Muslim A, Suwandi S. 2025. Comparative biology of bagworm larvae (Metisa plana) fed on oil palm (Elaeis guineensis) and malabar melastome (Melastoma malabathricum). Asian J Agric 9: 472-481. Metisa plana Walker, 1883 (Lepidoptera: Psychidae) is a significant defoliator in oil palm plantations, and the weed Melastoma malabathricum L. (malabar melastome) is believed to act as an alternative host, potentially maintaining pest numbers. This study assessed the comparative biology of M. plana larvae raised individually on oil palm and malabar melastome leaves in a laboratory setting. Recently emerged larvae (n?=?10 per treatment) were observed for leaf area consumption, larval bag form, developmental time, and survival rates. The results indicated that larvae consuming malabar melastome had a substantially greater leaf area consumption during instars 1-3 (up to 11.44?±?0.96?cm²) compared to those fed on oil palm (8.91?±?0.58?cm²; p?<?0.05), with the differences becoming non-significant from the 4th instar forward. The total duration of larval development was roughly 109 days on Malabar melastome and 103 days on oil palm, with no statistically significant difference (p > 0.05), while survival rates above 80% on both hosts. The length of larval bags exhibited substantial variation in the early instars (p < 0.01), but remained comparable in subsequent stages, and pupal weight was not assessed. The findings affirm that M. malabathricum serves as an appropriate alternate host for M. plana, underscoring the necessity for integrated weed management to avert malabar melastome from functioning as a reservoir, thereby enhancing the efficacy of pest management measures in oil palm ecosystems.
Co-Authors Afifah, Miftah Arsi, Arsi Bambang Gunawan Chandra Irsan Erise Anggraini, Erise ISTIQOMAH, HAWARYAH Lisdiana Lisdiana Nisa, Nabila Aulia Rahmat Pratama, Rahmat SITI HERLINDA Suwandi Suwandi