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All Journal HAYATI Journal of Biosciences Jurnal Fitopatologi Indonesia Jurnal Pengendalian Hayati Berkala Ilmiah Pertanian Indonesian Journal of Biotechnology UNEJ e-Proceeding JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA ALCHEMY Jurnal Penelitian Kimia Agritrop : Jurnal Ilmu-Ilmu Pertanian (Journal of Agricultural Science) Jurnal Proteksi Tanaman Tropis Journal of Applied Agricultural Science and Technology
HARDIAN SUSILO ADDY
Faculty Of Agriculture,University Of Jember, Jl. Kalimantan No. 37, Jember 68121
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Environmental Science Immunology & microbiology Materials Science & Nanotechnology Medicine & Pharmacology

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Influence of Light and Humidity on Infection Dynamics of Potential Entomopathogenic Fungus Against Spodoptera frugiperda Ambar Susanti; Suharto Suharto; Hardian Susilo Addy; Tri Candra Setiawati
Journal of Applied Agricultural Science and Technology Vol. 10 No. 3 (2026): Journal of Applied Agricultural Science and Technology
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jaast.v10i3.591

Abstract

The effectiveness of entomopathogenic fungi (EPF) in suppressing insect pests is strongly influenced by environmental conditions, particularly light exposure and relative humidity. This study evaluated the effects of ambient light and relative humidity on the pathogenicity and infection dynamics of Simplicillium lanosoniveum against Spodoptera frugiperdalarvae. A completely randomized design factorial 2 x 2 was used, with light exposure (ambient light under open and dark under enclosed conditions) and relative humidity (45% RH and 80% RH) factors.  Second–third instar larvae were inoculated with EPF, and each treatment included 25 individually reared larvae, arranged into five biological replicates of five larvae each, with each larva maintained in a separate. Larval mortality was recorded daily for 10 days and analyzed using a generalized linear model (GLM) with a binomial distribution. Ambient light exposure, relative humidity, and their interaction had no statistically significant effects on larval mortality (p > 0.05). Goodness-of-fit statistics indicated that the model adequately fit the data, with deviance and Pearson chi-square values close to unity. Numerically, the highest mortality (92%) and the shortest median lethal time (LT₅₀ = 6.4 days) were observed under dark conditions at 80% RH, whereas the lowest mortality (72%) and the longest LT₅₀ (8.3 days) occurred under ambient light at 45% RH Although the observed numerical pattern suggested a tendency toward faster infection under higher humidity, it was not statistically significant. Overall, S. lanosoniveum maintained relatively stable pathogenicity across the tested environmental conditions, indicating its potential for development as a biological control agent against S. frugiperda.
Co-Authors .,, Rasmiyana Abdul Majid Abdul Majid Agus Wedi Pratama Agustina Wati, Fajar Dwi Ali Wafa Ambar Susanti Ankardiansyah Pandu Pradana Ariestya Ayu Meda Sallytha Ariestya Ayu Meda Sallytha Bambang Piluharto Bambang Sugiharto BUDI ARMAN Budi Kriswanto Budi Kriswanto, Budi Dwi Indarti Erlia Narulita Fajar Dwi Agustina Wati Fanata, Wahyu Indra Duwi Hadi, Zul Fauzi Nugroho Hardiyani, Wulan Arum Mohammad Khoirul Amrulloh N, Suhartiningsih Dwi Nur Elia Nadhira Nurul Rama Dhany Paniman Ashna Mihardjo Paniman Ashna MIHARDJO Prastowo , Sigit Rachmi Masnilah Restanto, Didik Pudji Retnosari Apriasti Slameto . Slameto Slameto Suhartiningsih Dwi N Suhartiningsih Dwi Nurcahyanti Suharto Suharto Tanti Haryati Tri Candra Setiawati TRI CANDRA SETYOWATI Tri Handoyo TRI HANDOYO Wahyu Indra Duwi Fanata Wardhani, Widi Kusuma Weny Nailul Hidayati WIWIEK SRI WAHYUNI