Study on bioecology of Pasteuria penetrans

• Published in: Jurnal Perlindungan Tanaman Indonesia = Indonesian Journal of Plant Protection (Indonesia) Vol. 2; no. 1
• Main Authors: Mulyadi, Triman, B, Bambang, R.T.P. (Universitas Gadjah Mada, Yogyakarta (Indonesia). Fakultas Pertanian)
• Format: Publication
• Language: English
• Published: 1996
• Subjects: CONTENIDO DE AGUA EN EL SUELO; HOTE; HUESPEDES; METHODE D'APPLICATION; METODOS DE APLICACION; ORYZA SATIVA; PASTEURIA; TEMPERATURA; TEMPERATURE; TENEUR EN EAU DU SOL

In bioecological studies of P. penetrans, six experiments were done i.e. study the nematode hosts of P. penetrans; the effect of temperature, soil moisture, spores storage length, soil chemicals (compound fertilizer, carbofuran and mancozeb) and methods of application on the pathogenicity of P. penetrans. The research results are as follows: 1. nematode hosts of P. penetrans are M. incognita, M. javanica and M. graminicola; 2. temperature tested up to 100 deg. C did not affect on the infectivity of P. penetrans; 3. the highest infectivity of P. penetrans was found on soil moisture 45 percent than on 0 percent - 30 percent; 4. spores storage for one, two and three year affected the infectivity of P. penetrans; 5. treatments with carbofuran, mancozeb and compound fertilizer did not affect on the infectivity of P. penetrans, and 6. the used of spores of P. penetrans in grounded tomato roots more effective than in soil and water suspension and more efficient than in soil Study bioekologi bakteri Pasteuria penetrans meliputi: (1) uji nematoda inang; (2) pengaruh suhu, (3) kelembaban tanah, (4) lama penyimpanan spora bakteri, (5) senyawa kimia dalam tanah, dan (6) cara penggunaan terhadap patogenisitas P. penetrans. Hasil penelitian adalah sebagai berikut : (1) nematoda inang P. penetrans adalah M. incognita, M. javanica dan M. graminicola; (2) setelah dipanasi sampai suhu 100 derajat C bakteri P. penetrans masih mampu menginfeksi nematoda; (3) pada kelembaban tanah 45 persen infektivitas P. penetrans masih lebih tinggi daripada kelembaban 0-30 persen; (4) penyimpanan satu, dua dan tiga tahun berpengaruh terhadap infektivitas P. penetrans; dan (5) perlakuan dengan pestisida karbofuran dan mankozeb serta pupuk NPK tidak berpengaruh terhadap infektivitas P. penetrans; (6) perlakuan dengan spora P. penetrans dalam bubuk akar tomat dan tanah lebih efektif daripada dalam suspensi air serta lebih efisien daripada dalam tanah