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All Journal Jurnal Fitopatologi Indonesia Jurnal Perlindungan Tanaman Indonesia
Ibrahim, Ahmad Yusuf
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Agriculture, Biological Sciences & Forestry Medicine & Pharmacology

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Population of Soil Nematodes in The Treatment of Brassicaceae Plant Waste Ibrahim, Ahmad Yusuf; Supramana; Giyanto
Jurnal Fitopatologi Indonesia Vol 19 No 1 (2023): Januari 2023
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14692/jfi.19.1.19-29

Abstract

Tanaman famili Brassicaceae diketahui mengandung glukosinolat yang dapat terhidrolisis menjadi senyawa yang bersifat biofumigan. Penelitian ini dilakukan untuk menguji pengaruh biofumigasi limbah tanaman Brassicaceae terhadap dinamika populasi nematoda tanah. Percobaan rumah kaca dilakukan pada empat jenis limbah tanaman Brassicaceae, yaitu limbah daun lobak (Raphanus sativus), brokoli (Brassica oleracea var. italica), kubis (Brassica oleracea var. capitata), dan seluruh bagian gulma kamanilan (Roripa indica) dalam pot berisi 5 L tanah terinfestasi nematoda. Limbah tanaman dicacah berukuran ±1 cm, sebanyak 117 g per pot dicampurkan dalam tanah terinfestasi nematoda, disiram air hingga basah, dan ditutup rapat untuk proses biofumigasi selama 14 hari. Pot dibiarkan terbuka selama 3-5 hari, ditanami bibit mentimun varietas Roberto 92 berumur 7 hari, dan dipelihara di rumah kaca hingga 8 minggu setelah tanam. Pengamatan jenis dan populasi nematoda tanah dilakukan tiga kali, yaitu sebelum perlakuan, setelah perlakuan, dan 8 minggu setelah tanam. Percobaan ini disusun dalam rancangan acak lengkap dengan 6 perlakuan dan 5 ulangan. Hasil penelitian menunjukkan terjadi peningkatan nematoda free-living (nematoda bakteriovora dan nematoda fungivora) pada seluruh perlakuan limbah tanaman Brassicaceae. Sebaliknya, terjadi penurunan populasi fitonematoda secara nyata pada perlakuan limbah daun brokoli. Semua jenis limbah tanaman Brassicaceae dapat menekan populasi fitonematoda Helicotylenchus sp., Rotylenchulus sp., dan Xiphinema sp., secara nyata. Limbah daun brokoli menunjukkan nilai penghambatan tertinggi terhadap seluruh genus fitonematoda dengan penghambatan mencapai 100%.
Effect of Brassicaceae Waste Application on Soil Nematode Community Ibrahim, Ahmad Yusuf; Supramana, Supramana; Giyanto, Giyanto
Jurnal Perlindungan Tanaman Indonesia Vol 26, No 2 (2022)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.75321

Abstract

Brassicaceae are known to contain compounds that are biofumigants. This study aimed to determine the effect of Brassicaceae waste application on soil nematode community. Broccoli leaves and stems (Brassica oleracea var. italic), cabbage leaves and stems (B. oleracea var. capitate), kailan stems (B. oleracea var. alboglabra), radish leaves (Raphanus sativus), and leaves of kamanilan weed (Rorippa indica) were tested in this study. The total glucosinolate content of Brassicaceae waste was estimated using the palladium method with a modified spectrophotometer. The experiment was carried out in polybags containing 500 grams of soil-infested nematodes. Brassicaceae waste (15 grams/polybag) was chopped and mixed into the soil, watered, and polybags were tightly closed for 14 days. The experiment was arranged in a completely randomized design with nine treatments and five replications. The results of the total glucosinolate analysis showed that broccoli, radish, and kamanilan leaves fall into the high category (144.7-185.2 µmol/g); cabbage leaves, cabbage stems, and kailan stems fall into the medium category (52.0-56.0 µmol/g); and broccoli stems fall into the low category (35.4 µmol/g). There was no correlation between total glucosinolate contents and their effect on suppressing soil nematode communities at the applied effluent dose. The population of bacterivorous nematodes increased in each waste treatment, especially in kamanilan leaf treatment (R. indica) which reached 13,008 individuals. These results indicate that kamanilan weed has good potential to improve soil health. The treatment of Brassicaceae waste against soil nematode communities showed a low diversity index, an uneven evenness index, and a high dominance index.
Co-Authors Giyanto Supramana