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All Journal AGRIVITA, Journal of Agricultural Science Agrin : Jurnal Penelitian Pertanian
Muljo Wachjadi
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Agriculture, Biological Sciences & Forestry

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PENGUJIAN KEMAMPUAN MIKROBA ANTAGONIS UNTUK MENGENDALIKAN PENYAKIT HAWAR DAUN DAN LAYU BAKTERI PADA TANAMAN KENTANG DI DAERAH ENDEMIS Wachjadi, Muljo; Soesanto, Loekas; Manan, Abdul; Mugiastuti, Endang
Agrin Vol 17, No 2 (2013): Agrin
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.agrin.2013.17.2.202

Abstract

Penelitian bertujuan untuk mengetahui kemampuan beberapa mikroba antagonis untuk mengendalikanpenyakit hawar daun dan layu bakteri pada tanaman kentang di daerah endemik. Penelitian ini dilaksanakan dilahan kentang Desa Kejajar, Kecamatan Kejajar, Kabupaten Wonosobo, pada bulan Juni sampai Agustus 2013.Mikroba antagonis yang digunakan hasil isolasi dari pertanaman kentang dan telah diuji di rumah kaca danlapangan terbatas, yaitu dengan Bacillus sp. B2 dan B4, serta Pseudomonas sp. P19 dan P21. Berdasarkan hasilpenelitian yang telah dilaksanakan, dapat disimpulkan bahwa mikroba antagonis belum mampu mengendalikanpenyakit hawar daun dan layu bakteri, serta belum mampu meningkatkan pertumbuhan dan hasil tanamankentang. Akan tetapi, mikroba antagonis mampu mengimbas senyawa tanin pada tanaman kentang.Kata kunci: mikroba antagonis, penyakit hawar daun, layu bakteri, kentangABSTRACTThe research aimed at knowing ability of some antagonistic microbes to control leaf blight and bacterialwilt on potato at endemic field. This research was carried out at Kejajar Village, Kejajar Subdistrict, WonosoboRegency from June up to August 2013. The antagonists used were isolated from potato field and had been testedin the screen house and the limited field, i.e., Bacillus sp. B2 and B4, and Pseudomonas sp. P19 and P20. Basedon the research result, the antagonists could not control leaf blight and bacterial wilt, and could not increasegrowth and yield of potato. However, the antagonists could induce tannin content of the crop.Key words: antagonistic microbes, leaf blight, bacterial wilt, potato.
ABILITY TEST OF SEVERAL ANTAGONISTS TO CONTROL POTATO BACTERIAL WILT IN THE FIELD Soesanto, Loekas; Manan, Abdul; Wachjadi, Muljo; Mugiastuti, Endang
AGRIVITA Journal of Agricultural Science Vol 35, No 1 (2013)
Publisher : Faculty of Agriculture University of Brawijaya in collaboration with PERAGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17503/agrivita.v35i1.227

Abstract

The research objective was to know ability of antagonistic microbes to control bacterial wilt on potato in the field. This research was carried out at Serang Village, Karangreja Subdistrict, Purbalingga Regency from June up to August 2012. The antagonist, originally isolated from potato field, was Bacillus sp. B2 and B4, and Pseudomonas sp. P19 and P20. Based on the research result, Pseudomonas P19 could control the disease on potato with delaying incubation period of 78.95%, suppressing disease intensity of 51.57%, decreasing final pathogenic population of 99.74%, and inducing plant resistance with increasing saponin, tannin, and glycoside content. However, the antagonist could not increase growth and yield of potato.  Keywords: antagonistic microbes, bacterial wilt, potato
Co-Authors Abdul Manan Endang Mugiastuti Loekas Soesanto