Update Artikelilmiah: 20721

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Abstrak (Bhs. Indonesia)

Penyakit layu bakteri yang disebabkan oleh Ralstonia solanacearum merupakan salah satu penyakit penting yang dapat menurunkan produksi tomat. Penelitian bertujuan untuk mengetahui kemampuan campuran mikroba antagonis untuk menekan penyakit layu bakteri dan pengaruhnya terhadap pertumbuhan dan hasil tanaman tomat. Penelitian dilaksanakan di Desa Sumbang, Kecamatan Sumbang, Kabupaten Banyumas dan Laboratorium Perlindungan Tanaman, Fakultas Pertanian, Universitas Jenderal Soedirman pada bulan Maret 2017 sampai Juni 2017. Penelitian menggunakan Rancangan Acak Kelompok (RAK) dengan empat perlakuan dan enam kali ulangan. Perlakuan yang dicoba adalah kontrol (tanpa perlakuan), campuran Bacillussp. B8, Bacillus sp. B11 dan Trichoderma sp., campuran Bacillus sp. B8, P. fluorescens P8 dan Trichoderma sp., serta Bakterisida (streptomisin sulfat 20%). Variabel yang diamati adalah masa inkubasi, insidensi penyakit, intensitas penyakit, tinggi tanaman, bobot tanaman, bobot akar, jumlah dan bobot buah. Hasil penelitian menunjukkan bahwa perlakuan campuran Bacillus sp. B8, Bacillus sp. B11 dan Trichoderma sp. memberikan pengaruh terbaik pada semua komponen patosistem, pertumbuhan dan hasil dibandingkan dengan perlakuan lain. Perlakuan campuran Bacillussp. B8, Bacillus sp. B11 dan Trichoderma sp. dapat menunda masa inkubasi sebesar 23,73%, menekan insidensi penyakit sebesar 33,33% dan intensitas sebesar 31,02%, meningkatkan tinggi tanaman sebesar 19,88%, bobot segar tanaman 41,62%, bobot segar akar sebesar 31,02%, jumlah buah sebesar 46,76% dan bobot segar buah sebesar 82,38%.

Abtrak (Bhs. Inggris)

Bacterial wilt disease caused by Ralstonia solanacearum is one of the important diseases that can decrease tomato production. The objective of this research is to know the ability of mixture of antagonistic microbes to suppress bacterial wilt disease and its effect on growth and yield of tomato plants. The study was conducted in Sumbang Village, Sumbang Subdistrict, Banyumas Regency and Plant Protection Laboratory, Faculty of Agriculture, Jenderal Soedirman University from March 2017 to June 2017. The research used Randomized Block Design (RBD) with four treatments and six replications. The treatments were controled (without treatment), Bacillus sp. B8 mixture, Bacillus sp. B11 and Trichoderma sp., Bacillus sp. B8 mixture, P. fluorescens P8 and Trichoderma sp., and Bactericide (streptomycin sulphate 20%). The observed variables were incubation period, disease incidence, disease intensity, plant height, plant weight, root weight, amount and weight of fruit. The results showed that treatment with mixture of Bacillus sp. B8, Bacillus sp. B11 and Trichoderma sp. gave the best effect on all components of pathosystem, growth and yield compared with other treatment. The treatment with mixture of Bacillus sp. B8, Bacillus sp. B11 and Trichoderma sp. can delay incubation period by 23,73%, suppress incidence of disease equal to 33,33% and intensity 31,02%, increase plant height 19,88%, fresh weight of plant 41,62%, root fresh weight 31 , 02%, number of fruit equal to 46,76% and fresh weight of fruit equal to 82,38%.

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