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All Journal Agrikultura AGROLOGIA : Jurnal Ilmu Budidaya Tanaman
Andang Purnama
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science

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Penapisan Beberapa Isolat Pseudomonas fluorescens, Bacillus subtilis dan Trichoderma harzianum yang bersifat Antagonistik terhadap Ralstonia solanacearum pada Tanaman Kentang Hersanti Hersanti; Rian Triyanti Rupendi; Andang Purnama; Hanudin Hanudin; Budi Marwoto; Oni Setiani Gunawan
Agrikultura Vol 20, No 3 (2009): Desember, 2009
Publisher : Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (227.049 KB) | DOI: 10.24198/agrikultura.v20i3.957

Abstract

Penyakit layu bakteri yang disebabkan oleh R. solanacearum merupakan salah satu penyakit penting yang menyerang tanaman kentang. Salah satu alternatif pengendalian yang ramah lingkungan adalah menggunakan mikroba antagonis seperti Pseudomonas fluorescens, Bacillus subtilis, dan Trichoderma harzianum. Tujuan penelitian adalah  untuk mendapatkan isolat mikroba antagonis terbaik yang paling menekan  penyakit layu bakteri pada tanaman kentang.  Dua percobaan pada penelitian ini menggunakan  Rancangan Acak Lengkap. Percobaan  in vitro menguji daya hambat tiga isolat  P. Fluorescens,  dua isolat B. subtilis, satu isolat B. cereus dan  3 isolat T. harzianum terhadap perkembangan koloni  R. solanacearum pada media King’s B. Percobaan  in vivo menguji kemampuan seluruh isolat terhadap penekanan serangan penyakit layu pada tanaman kentang.  Hasil percobaan menunjukkan bahwa isolat T. harzianum 1, T. harzianum 2 dan T. harzianum 3 mampu menekan penyakit layu bakteri pada tanaman kentang dengan persentase penghambatan berturut-turut 77,21 %,  77,21 %, dan 63,57 %.
Populasi Hama Wereng Batang Coklat (Nilaparvata lugens Stal.), Keragaman Musuh Alami Predator Serta Parasitoidnya Pada Lahan Sawah Di Dataran Rendah Kabupaten Indramayu Martua Suhunan Sianipar; Andang Purnama; Entun Santosa; R.C. Hidayat Soesilohadi; Wahyu Daradjat Natawigena; Nenet Susniahti; Akbar Primasongko
Agrologia Vol 6, No 1 (2017)
Publisher : Faculty of Agriculture, Pattimura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/a.v6i1.245

Abstract

Population of brown plant hopper (Nilaparvata lugens Stal) is one of the major rice pest that is threatening rice production in Indramayu. Integrated pest management is needed to control the population of brown plant hopper (BPH). To construct effective strategy of Integrated Pest Management, a survey to obtain information about the population of BPH and the diversity of its natural enemies predator and parasitoid is required. The result of the survey showed that fluctuation of BPH population was evidence. BPH occurs from the 1st week of observation and the population was rising until the 5th week of observation and hence the population declined until the 12th week of observation. This population decline was caused by BPH’s live cycle followed the growth phase of rice plant. Correlation between climate factors and fluctuation of BPH population was not significant. Based on Shanon-Wiener diversity index analysis, the diversity of natural predators of BPH was medium with the value of H’ of 1,83 due to  uniform field condition
Co-Authors Akbar Primasongko Budi Marwoto Entun Santosa Hanudin Hanudin Hersanti - Martua Suhunan Sianipar Nenet Susniahti Oni Setiani Gunawan R.C. Hidayat Soesilohadi Rian Triyanti Rupendi Wahyu Daradjat Natawigena