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All Journal Jurnal Fitopatologi Indonesia Agrikultura Cropsaver : Journal of Plant Protection Jurnal Perlindungan Tanaman Indonesia Jurnal Mikologi Indonesia Jurnal Entomologi Indonesia Soil REns 3BIO: Journal of Biological Science, Technology and Management
Sri Hartati
Fakultas Pertanian, Universitas Padjadjaran
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Environmental Science Immunology & microbiology Medicine & Pharmacology Neuroscience

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Potency of Yeasts Isolated from Shallot Rhizosphere to Control Basal Rot (Fusarium oxysporum f.sp. cepae) Disease on Shallot Sri Hartati; Risma Yuniah Nur’haqi; Wahyu Daradjat Natawigena; Tarkus Suganda
CROPSAVER Vol 5, No 1 (2022)
Publisher : Departemen Hama dan Penyakit Tumbuhan Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/cropsaver.v5i1.38099

Abstract

One of the major diseases of shallots is basal rot disease caused by Fusarium oxysporum f.sp. cepae (FOC). Biocontrol agents can be used as an environmentally friendly control method. Some yeasts isolated from the rhizosphere may have the potencies to control soilborne plant pathogen such as FOC. This study was objected to obtain yeast isolates from the rhizosphere of shallots that have the potencies to control basal rot. The first step was isolation of yeasts from the rhizosphere of shallots and isolation of FOC. The yeast isolates were then tested for their potencies in suppressing FOC in vitro and decreasing the basal rot disease on the shallot plants. There were ten yeast isolates obtained from the rhizosphere of shallot, in which seven isolates were non pathogenic to shallot plant. These seven isolates were further tested  for their potencies in controlling FOC and basal rot disease. The results showed that those isolates were able to inhibit the colony growth of FOC by 16,11% - 38,33% in the in vitro dual culture test, and 21,11% - 38,89% in the production of volatile compound test. The isolates also suppressed the basal rot disease incidences by 8,30% - 24,98%. Isolates Cm2 and Cm3 caused the highest disease suppression (24,98%).
Aplikasi Pupuk Organik terhadap Diversitas Arthropoda Akuatik serta Performa Tanaman Padi Hitam pada Ekosistem Sawah Vira Kusuma Dewi; Tiara Febricyanti Putri Senjaya; Fitri Widiantini; Agus Susanto; Sri Hartati; Lindung Tri Puspasari; Rika Meliansyah
Soilrens Vol 20, No 1 (2022)
Publisher : Dept Ilmu Tanah & Sumberdaya Lahan Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/soilrens.v20i1.41354

Abstract

The aquatic ecosystems in rice fields has macroorganisms such as aquatic arthropods which have an important function in the food web. The siam weed and neem cake can be utilized as organic fertilizer to support the productivity and biodiversity of the paddy field, This research aims to understand application of organic fertilizer on diversity of aquatic arthropods and black rice performance in the field ecosystem. The experiment was carried out in paddy field at Jatinangor from January to June 2020. The method used was an experimental method with a Randomized Complete Block Design consisted of five treatments (neem cake, siam weed compost, cow manure, synthetic fertilizer and control) with six replications. The result showed that the abundances of aquatic arthropods have tendency to be higher in neem cake at 1104 individuals and siam weed compost treatments at 905 individuals compared to the cow manure, NPK and control. Furthermore, the diversity index of the aquatic arthropods in all treatments were categorized as moderate with details as follow neem cake (H’=1,726), cow manure (H’=1,450); synthetic fertilizer (H’=1,458); siam weed compost (H’=1,450) and control (H’=1,502). In addition, the evenness index (E) of aquatic arthropods was higher in neem cake treatment (E=0,623) compared to other treatments. Whereas, the dominance index (C) and richness index (R) in all treatments showed no dominant species and it classified as low category. The results also showed that the siam weed compost were not significantly different with all treaments except NPK (synthetic fertilizer) in plant hight, tiller number and SPAD value.
Co-Authors Agus Dana Permana Agus Susanto Agus Susanto Benito Heru Purwanto Ceppy Nasahi Desy Natalia Br. Saragih Dian Nurul Izzati Dwi Harya Yudistira Endah Yulia Endah Yulia Fitri Widiantini Ichsan Nurul Bari Lilian Rizkie Linda Tarina Linda Tarina Linda Tarina Lindung Tri Puspasari Luciana Djaya Luciana Djaya M S Sinaga Martua Suhunan Sianipar Meity Suradji Sinaga Meity Suradji Sinaga Mustika Dewi Noor Istifadah Nugroho Susetya Putra Nurul Falah Khomaedy Octaviani . Putu Ghita Novilaressa Ramadhan Kamal Putra Retno Anjani Putri Reynaldi Yunior Rika Meliansyah Risma Yuniah Nur’haqi Rizky Fauzi Rizky Fauzi S H Hidayat S Wiyono Santa Monica Santika Sari Santika Sari Siska Rasiska SRI HENDRASTUTI HIDAYAT Sri Rosmala Dewi Suryo Wiyono Syifa Nabilah Subakti Putri Tarkus Suganda Tiara Febricyanti Putri Senjaya Timotius A. Sumbari Tohidin Tohidin Ummu Salamah Rustiani Vira Kusuma Dewi Wahyu Daradjat Natawigena, Wahyu Daradjat Wawan Kurniawan Yani Maharani Yongki Umam Sandi Yongki Umam Sandi Yudi Rismayadi