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  • SKRINING KEMANGKUSAN MIKROBA ANTAGONIS TERHADAP PENYAKIT PADA TANAMAN KRISAN
  • No. Deskripsi Tahun Penulis Download
    1 Penelitian untuk mengetahui efikasi agens hayati terhadap penyakit pada tanaman krisan telah dilakukan di rumah kaca dan di lapangan. Sebanyak 20 isolat bakteri telah diuji efektivitasnya dengan cara disemprotkan dengan konsentrasi 108 cfu/ml merata seluruh tanaman. Evaluasi terhadap intensitas penyakit dilakukan pada saat panen. Hasil penelitian menunjukkan bahwa di rumah kaca penyakit hawar daun kurang bisa berkembang, namun penyakit yang bukan merupakan target berkembang cukup berarti, yaitu penyakit layu fusarium dan embun tepung (Oidium sp). Di lapangan selain Pseudomonas cichorii dijumpai penyakit karat putih yang disebabkan oleh Puccinia horiana, dan penyakit busuk basah yang disebabkan oleh Erwinia sp.. Pseudomonas fluorescens isolat Pf 2 dan Pf 4A, serta Bacillus subtilis isolat Ba 13, Ba 16, dan Ba 17 efektif menekan intensitas penyakit hawar daun. Pseudomonas fluorescens isolat Pf 2, Pf 4A, dan Pf 16 efektif terhadap penyakit karat putih. Semua isolat yang diuji tidak efektif terhadap penyakit busuk basah dan penyakit layu fusarium. Pseudomonas fluorescens isolat Pf 2, MR 9, dan B. subtilis isolat Ba 9 efektif terhadap embun tepung di rumah kaca. Katakunci: Dendranthema grandiflora; Pucciana horiana; Pseudomonas cichorii; Pseudomonas fluorescens; Bacillus subtilis; Agens hayati; Pengendalian biologi. 2007 Suhardi, Hanudin, W. Handayati, dan A. Saepulloh

    Daftar Publikasi Lainnya (Jurnal Hortikultura No. 17 Vol. 2)

    • Winarto, B. dan F. Rachmawati

      Teknik Kultur Anther pada Pemuliaan anthurium

      Anther culture is a new technique developed on several plants in obtaining pure line of plant via double haploid plant production. The existence of such plant has significantly increased and improved plant breeding and seed production programs efficiency. In anthurium so far the techniques have not developed and reported yet, therefore this study is important and benefit for the plant in relation with improving the plant breeding and seed production programs. The research objectives were too
    • Prabaningrum, L. dan T.K. Moekasan

      Identifikasi Status Hama pada Budidaya Paprika (Capsicum annuum var. grossum) di Kabupaten Bandung, Jawa Barat

      One of constraints in cultivating sweet pepper is pests and diseases problem. Survey to determine pests status on sweet pepper was carried out in January (rainy season) and August (dry season) in 2003 at Bandung District, West Java. Data were collected using questioner with 30 farmers as respondents. The data consisted of kind of pest, crop loss, and pest control and the data was analyzed descriptively. The results indicated that thrips was a key pest on sweet pepper in either rainy or dry
    • Suhardi, Hanudin, W. Handayati, dan A. Saepulloh

      Skrining Kemangkusan Mikroba Antagonis terhadap Penyakit pada Tanaman Krisan

      Research to know the efficacy of biological agents to control the diseases on chrysanthemum were done in a glasshouse and field. As many as 20 bacterial isolates were tested by spraying bacterial cells at 108 cfu/ml until run off. Evaluation was done at the harvest time in relation to disease intensity. Results indicates that leaf blight did not develop in the glasshouse, but other diseases such as fusarium wilt and powdery mildew progressed significantly. In the field, besides leaf blight,