Claim Missing Document
Check
Articles

Found 5 Documents
Search

Studi Sifat Biologi, Fisika dan Kimia Tanah pada Pertanaman Kulit Manis Dataran Tinggi Weni Wilia; Yulia Morsa Said Rambe; Agus Kurniawan
Jurnal Agroecotania : Publikasi Nasional Ilmu Budidaya Pertanian Vol. 3 No. 1 (2020): Jurnal Agroecotania: Publikasi Nasional Ilmu Budidaya Pertanian
Publisher : Jambi University, Fakultas Pertanian, Program Studi Agroekoteknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Penelitian ini bertujuan untuk mempelajari sifat fisika, biologi dan kimia tanah serta stok karbon organic pada pertanaman kulit manis dataran tinggi. Hal ini diperlukan untuk melihat potensi simpan stok karbon pada tanah dan faktor-faktor yang mempengaruhinya dalam hal ini dikaitkan dengan mikroba rizosfer yang berada di sekitar tanaman khususnya cendawan tanah. Eksplorasi mikroba rizosfer yang berada pada sekitar tanaman kayu manis yang berpotensi untuk dikembangakan. Didapatkan cendawan rizosfer yang berpotensi sebagai agens biologi sehingga bisa dimanfaatkan untuk pertanian ramah lingkungan. Hasil isolasi mikroba rizosfer pada tanah sampel, didapatkan cendawan Aspergillus spp., Rhizopus spp., Trichoderma sp., Penicillium sp. Nilai C organic lokasi penelitian tergolong tinggi sampai sangat tinggi berkisar berkisar dari 3,47 % hingga 10,27, sedangkan N total berkisar antara 0,314 hingga 0,882%. yang tergolong sedang-tinggi. Nilai C:N rasio berkisar antara 7,99 hingga 13,27, dimana nilai ini tergolong rendah hingga tinggi. Kadar P pada lokasi penelitian berkisar antara 13,01 hingga 169,11 ppm yang tergolong sangat rendah hingga sangat tinggi. Sedangkan kadar K berkisar dari rendah hingga sangat tinggi, yakni berkisar dari 8,45 me/100g hingga 59,55 me/100g. Nilai kapasitas tukar kation (KTK) tanah-tanah dari wilayah pengamatan secara umum tergolong rendah, berkisar dari 25,49 me/100g hingga 47,50 me/100g dan pH tanah umumnya tergolong agak masam berkisar dari 5,87 hingga 6,39. Bobot isi (BV) tanah dilokasi penelitian berkisar dari 0,43 g/cc hingga 1,01 g/cc yang sesuai dengan kondisi tanah Andosol di lokasi penelitian. Pola hubungan antara nilai C organic terhadap pH (X1), N total (X2), P total (X3), K total (X4), KTK (X5), C/N rasio (X6), dan BV (X7) mempunyai model hubungan sebagai berikut : Y = -12,99 + 0,99 X1+ 11,01 X2 - 0,004 X3 + 0,005 X4 – 0,004 X5 + 0,695 X6 – 0,03 X7 dengan R2= 0,99. N total merupakan variabel terpenting terkait keberadaan C organic di dalam tanah. Cadangan karbon bawah permukaan pada areal kayu manis dilokasi penelitian berkisar dari 4471,522 Mg C ha-1 hingga 31059,67 Mg C ha-1..
POTENSI KHAMIR UNTUK MENGENDALIKAN PENYAKIT ANTRAKNOSA (Colletotrichum acutatum L.) PADA TANAMAN CABAI (Potency of Endophytic Fungi and Yeast as Biological Control to Pepper Anthracnose (Colletotorichum acutatum L.) Weni Wilia; . Widodo; Suryo Wiyono
Bioplantae Vol. 1 No. 4 (2012): Bioplantae
Publisher : Bioplantae

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Anthracnose caused by Colletotrichum actuate is one of devastated disease ofpepper in Indonesia that has great impact on yield loss. Most of farmers usefungicides as controller for this disease. Application of biocontrol agentscould be one ways to control anthracnose. Beneficial microorganism such asyeast is able to be promising biocontrol agents of some pathogens, includingColletotrichum. The aim of this research was to isolate yeast from fruit andbranch as biocontrol agents for pepper anthracnose. The research results 9isolates of yeasts that were further tested against anthracnose. Isolates ofyeasts were identified as Cryptococcus terreus, C. abides var. aerius IPB 1,and C. abides var. aerius IPB 2, Candida Edam. Other isolates coded asCBN, CBM, CBK, CBF, and CBR were not identified yet. Five of potentialyeasts, Cryptococcus terreus, C. albidus var aerius IPB 1, C. albidus varaerius IPB 2, Candida edax, and unidentified yeast CBN showed directantagonist mechanism. Among of potential yeasts isolated, CBN showedability to reduce incidence of disease up to of 87.50%.Key word: Pepper, antrachnose, C. acutatum, yeast
EKSPLORASI CENDAWAN ENDOFIT DARI TANAMAN PADI SEBAGAI AGENS PEMACU PERTUMBUHAN TANAMAN (The Exploration of Endophytic Fungi from Oryza sativa as Plant Growth Promoting Agents) Weni Wilia; Islah Hayati; Dwi Ristyadi
Bioplantae Vol. 1 No. 4 (2012): Bioplantae
Publisher : Bioplantae

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Endophityc fungi have been successfully isolated from Oryza sativa atLaboratory of Plant Disease, Agriculture Faculty University of Jambi. Theaim of this research was to get endophityc fungi from Oryza sativa. Therewere three (3) candidates of endophityc fungi that have been successfullyisolated. Pathogenosity test which was done showed that all of fungi wereendophityc fungi. Those fungi were identified as endophityc fungi due to theseed of paddy could growth normally in pure culture of endophityc fungi. Thethree of isolated endophityc fungi were identified as Hifa steril 1, Hifa steril 2,and Fusarium sp.Keyword: endophityc fungi, Oryza sativa
EKSPLORASI CENDAWAN ENDOFIT DARI TANAMAN CABAI YANG BERPOTENSI SEBAGAI AGENS BIOKONTROL PENYAKIT ANTRAKNOSA (Colletotrichum acutatum L.) (Exploration of Endophytic Fungi from Pepper as Biological Control Agents of Anthracnose (Colletotrichum acutatum L.) Weni Wilia; . Widodo; Suryo Wiyono
Bioplantae Vol. 2 No. 1 (2013)
Publisher : Bioplantae

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Anthracnose caused by Colletotrichum acutatum is one of devastated disease of pepper in Indonesia and has great impact on yield loss. Most of farmers use fungicides as controller for this disease. Application of biocontrol agents could be solution to control anthracnose. Beneficial microorganism, such as endophytic fungi are able to be promising biocontrol agents of some pathogens, including Colletotrichum acutatum. The aim of this research was to isolate endophytic fungi from fruit and branch as biocontrol agents for pepper anthracnose. The research resulted 11 isolates of endophytic fungi that were further tested against anthracnose. Isolates of endophytic fungi were identified as steril hifa hitam 1, steril hifa hitam 2, steril hifa 1, steril hifa 2, Nigrospora sp., Coniotyrium sp., Cylindrocarpon sp., Paecilomyces sp. The 3 of other isolates (isolat buah 5, isolat buah 1dan isolat batang 24) were not identified yet.   Keyword : Pepper, antrachnose, C. acutatum, endophytic fungi
Kemampuan Bakteri Endofit dalam Mengendalikan Penyakit Rebah Kecambah dan Layu Sclerotium (Sclerotium rolfsii) pada Kedelai Husda Marwan; Sri Mulyati; Weni Wilia
JPT : JURNAL PROTEKSI TANAMAN (JOURNAL OF PLANT PROTECTION) Vol 1 No 2 (2017): Desember 2017
Publisher : Jurusan Hama dan Penyakit Tumbuhan Faperta Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (333.115 KB) | DOI: 10.25077/jpt.1.2.52-61.2017

Abstract

Endophytic bacteria have potency as candidates of biological control agents to plant disease, because the bacteria as reported to be associated with plant resistance to pathogens. The study aimed to determine the ability of endophytic bacteria to inhibit the growth of Sclerotium rolfsii in vitro, and suppress damping off disease incedence and Sclerotium wilt disease severity on soybean. The ability of endophytic bacteria to inhibit S. rolfsii was carried out on 44 isolates that isolated from soybean, rice and banana. The ability of endophytic bacteria to control damping off disease was carried out on 13 isolates were selected in vitro (BE-CW1, BE-M1, BE-M2, BE-M3, BE-M4, BE-S1, BE-S6, BE-S13, BE-S14, BE -BRRG2, BE-KH1), and also fungicides and two controls (healthy plant and diseased plant). The ability of endophytic bacteria to control Sclerotium wilt was carried out on 6 isolates which showed pressure on damping off disease (BE-M1, BE-M2, BE-M3, BE-M4, BE-CW1, BE-KH2) and 2 controls (healthy plants and diseased plants).The results showed that the thirteen isolates of endophytic bacteria could inhibit mycelial growth and germination S. rolfsii. Soybean seed treatment revealed that dipping the seed in endophytic bacterial isolates suppressed damping off disease incedence with a range of 37.4 to 49.9% and Sclerotium wilt disease severity of 20.1 to 85 % , as well as reduced the mortality of soybean by 26.3 to 84.4 % . BE-KH2 isolate was able to suppress Sclerotium wilt in soybean by 85% and reduce the mortality by 67.5%.