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All Journal Sains Tanah Agrosains: Jurnal Penelitian Agronomi Caraka Tani: Journal of Sustainable Agriculture
Hadiwiyono Hadiwiyono
Department of Agrotechnology, Faculty of Agriculture, Sebelas Maret University
Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences

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Succession of Fungal Community Structure in Degradative Land Caused by Basal Rot Pathogen of Garlic Cahyani, Vita Ratri; Rahayu, Devi Puji; Siswanto, Agus; Prasetyo, Dedy; Hadiwiyono, Hadiwiyono
Sains Tanah - Jurnal Ilmu Tanah dan Agroklimatologi 2014: Articles in Press (Vol. 11 No. 1)
Publisher : Faculty of Agriculture, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15608/stjssa.v0i0.216

Abstract

Land degradation causes a decreasement the ability of land in suppressing the development of pathogen FOCe that causes basal rot of garlic. In the garlic planting area in Tawangmangu discovered the fact that productive-suppressive land to FOCe the disease has low incidence (<1%) and degradative-conducive land with high incidens (≥60%). The research aims to study the succession of common fungal community structure and FOCe in the rhizosphere of garlic on both land for garlic plantation. The study was conducted from April to September 2013 in productive-suppressive land (Pancot) and degradative-conducive (Gondosuli) for soil sampling and laboratory analysis in Biologi Tanah UNS for fungi and FOCe analysis. The composite method used for sampling and the garlic rhizosphere samples  which is had healthy plants conditions aged 0, 20, 40, and 60 days after planting (DAP), and the garlic rhizosphere samples with healthy plants and diseased condition aged 80, 100, and 120 days after planting (DAP). Laboratory analysis using PDA culture medium as common fungi growing medium and SFA as a growing medium FOCe then observed population density and diversity. The method was pour plate method with 10-2 to 10-7 dilution. The results showed the population and diversity of fungi and FOCe have dynamics fluctuation. The fungi population in productive-suppressive land lower than degradative-conducive, with each value 108 and 3,5x108 CFU gram-1 soil. FOCe population on degradative-conducive land was higher than productive-suppressive land, and the highest population in both land at age 20 and 100 DAP with a FOCe density of each land about 1,25x107 and 1,66x107 CFU gram-1 soil. During the growth periode of garlic, the fungi diversity on productive-suppressive land always indicate higher than degradative-conducive land.
Daun Mimba, Sirih, dan Pahitan sebagai Fungisida Nabati: Efektifitas dan Kompatibelitasnya dengan Trichoderma untuk Pengendalian Penyakit Akar Gada (Plasmodiophora brassicae) Hadiwiyono, Hadiwiyono
Caraka Tani: Journal of Sustainable Agriculture Vol 20, No 2 (2005): October
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2368.34 KB) | DOI: 10.20961/carakatani.v20i2.20490

Abstract

The research aims to evaluate effectiveness of leaf extract oh neem, piper, and eupathorium as botanical pesticide and its compatibility which use of biological control agents Trichoderma for control of club root disease. The test conducted in greenhouse belong to Faculty of Agriculture, University of Sebelas Maret at Surakarta., on June till September 2004. The research used completely randomized design with 3 replications consisted 10 soil treatments before planting using leaf extract of neem (Azadirachta indica), Piper betle, and Eupathorium inulifolium and Trichoderma or its combinations. As dependent variables are disease severity, weight of health root, weight of fresh biomass and dryy biomass.The result of the research showed that soil treatment using leaf extract of neem, piper, and euphatorium could reduce effectively disease severity of club root. Treatment combinations of leaf extract of neem, piper, and euphatorium could increase effectiveness of control of club root and compatible with soil treatment using Trichoderma so it could increase effectiveness of the disease control.
Pengendalian Infeksi Akar Gada pada Pembibitan Kubis dengan Pupuk Hijau Daun Paitan Pratiwi, Diah Ayu; Gutomo, Hardjono Sri; Hadiwiyono, Hadiwiyono
Agrosains : Jurnal Penelitian Agronomi Vol 17, No 2 (2015): Agrosains: Jurnal Penelitian Agronomi
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (467.01 KB) | DOI: 10.20961/agsjpa.v17i2.18664

Abstract

Clubroot is a major disease that often infects cabbage caused by Plasmodiophora brassicae Wor.. The leaf of T. diversifolia is an example of weeds that can be used as green leaf manure. The research aimed to study the effectiveness and dosage of green manure from Tithonia leaf to control clubroot. In planta test was conducted by using factorial completely randomized design, the first factor was dosages of Tithonia green manure and second factor was application time of fertilizing. The research showed that green manure from Tithonia leaf effectively suppressed infection of P. brassicae and was capable of increasing growth variable of cabbage seedling. Fertilizing with green leaf manure of Tithonia with dosage of 10 ton ha-1 could decreased intensity of P. brassicae infection up to 10,18%. The application time of fertilizing 0 days after planting has the highest weight of cabbage seedling biomass is 14,10 g.
Co-Authors Dedy Prasetyo Devi Puji Rahayu Hardjono Sri Gutomo, Hardjono Sri I Gusti Bagus Wiksuana I Ketut Suada Vita Ratri Cahyani