Aritonang., Awal Josua and Dr. Ir. Mintarto Martosudiro,, MS (2024) Pengaruh Konsentrasi Fungisida Berbahan Aktif Pyraclostrobin 250 Ec terhadap Penyakit Bercak Daun dan Keanekaragaman Jamur Filoplan pada Tanaman Sawi (Brassica juncea L.). Sarjana thesis, Universitas Brawijaya.
Abstract
Tanaman sawi (Brassica juncea L) merupakan jenis tanaman hortikultura yang berasal dari marga Brassica dan banyak dimanfaatkan daun atau bunganya sebagai bahan pangan. Hama dan penyakit tanaman sawi menjadi salah satu kendala dalam meningkatkan produksi tanaman yang dimana dapat menyebabkan produksi mengalami penurunan baik secara kuantitas dan kualitas. Salah satu penyakit yang menyerang tanaman sawi dan menyebabkan kerugian ialah penyakit bercak daun. Penyakit bercak daun merupakan penyakit penting pada tanaman sawi yang disebabkan oleh jamur Alternaria sp. Salah satu upaya yang perlu dilakukan untuk mengendalikan penyakit bercak daun secara tepat dan efektif yaitu dengan menggunakan fungisida. Namun, penggunaan fungisida yang berlebihan dapat menurunkan populasi dari keanekaragaman jamur filoplan. Berdasarkan uraian diatas, maka perlu dilakukan penelitian untuk mengetahui pengaruh konsentrasi fungisida berbahan aktif pyraclostrobin terhadap penyakit bercak daun dan keanekaragaman jamur filoplan pada tanaman sawi. Penelitian ini dilaksanakan di AgSolution Farm PT. BASF yang berlokasi di Desa Jatirejoyoso, Kecamatan Kepanjen, Kabupaten Malang, Jawa Timur dan di Laboratorium Toksikologi, Departemen Hama dan Penyakit Tumbuhan, Fakultas Pertanian Universitas Brawijaya pada bulan Agustus hingga November 2023. Tahapan penelitian dimulai dari pengaplikasian fungisida pyraclostrobin, sterilisasi alat dan bahan, pembuatan media PDA, pengambilan sampel daun, isolasi, purifikasi dan identifikasi. Penelitian dilakukan dengan menggunakan Rancangan Acak Kelompok dengan 6 perlakuan serta diulang sebanyak 4 kali ulangan, yang meliputi perlakuan kontrol (P0), perlakuan pyraclostrobin 0,350 ml/l (P1), perlakuan pyraclostrobin 0,375 ml/l (P2), perlakuan 0,400 ml/l (P3), perlakuan pyraclostrobin 0,425 (P4) dan perlakuan pyraclostrobin 0,450 ml/l (P5). Pengaplikasian fungisida dilakukan sebanyak 2 kali dan kemudian mengamati variabel penelitian berupa intensitas penyakit bercak daun Alternaria dan keanekaraman jamur filoplan. Berdasarkan hasil penelitian menunjukkan bahwa perbedaan konsentrasi fungisida pyraclostrobin memberikan pengaruh terhadap intensitas penyakit bercak daun dan keanekaragaman jamur filoplan pada tanaman sawi. Rata-rata intensitas penyakit terendah ditemukan pada perlakuan pyraclostrobin 0,450 ml/l (P5) dengan nilai intensitas 6,25% dan 7,25%. Sedangkan rata-rata intensitas penyakit tertinggi ditemukan pada perlakuan kontrol (P0) dengan nilai 15% dan 26,75%. Hasil eksplorasi jamur filoplan dari 24 sampel diperoleh sebanyak 33 isolat dengan 6 genus jamur yaitu Aspergillus, Penicillium, Trichoderma, Curvularia, Fusarium dan Alternaria.
English Abstract
The mustard plant (Brassica juncea L) is a type of horticultural plant that comes from the Brassica genus and the leaves or flowers are widely used as food. Pests and diseases of mustard plants are one of the obstacles in increasing crop production which can cause production to decrease both in quantity and quality. One of the diseases that attacks mustard greens and causes losses is leaf spot disease. Leaf spot disease is an important disease in mustard plants caused by the fungus Alternaria sp. One effort that needs to be made to control leaf spot disease appropriately and effectively is by using fungicides. However, excessive use of fungicides can reduce the population of phylloplan fungal diversity. Based on the description above, it is necessary to carry out research to determine the effect of the concentration of fungicide containing the active ingredient pyraclostrobin on leaf spot disease and the diversity of phyloplane fungi in mustard greens. This research was carried out at AgSolution Farm PT. BASF is located in Jatirejoyoso Village, Kepanjen District, Malang Regency, East Java and in the Toxicology Laboratory, Department of Plant Pests and Diseases, Faculty of Agriculture, Brawijaya University from August to November 2023. The research stages start from the application of the fungicide pyraclostrobin, sterilization of tools and materials, making PDA media, taking leaf samples, isolation, purification and identification. The research was conducted using a randomized block design with 6 treatments and repeated 4 times, which included control treatment (P0), 0.350 ml/l pyraclostrobin treatment (P1), 0.375 ml/l pyraclostrobin treatment (P2), 0.400 ml/l treatment (P3), 0.425 pyraclostrobin treatment (P4) and 0.450 ml/l pyraclostrobin treatment (P5). The fungicide was applied twice and then observed the research variables in the form of the intensity of Alternaria leaf spot disease and the diversity of filoplane fungi. Based on the research results, it shows that differences in the concentration of the fungicide pyraclostrobin have an influence on the intensity of leaf spot disease and the diversity of filoplane fungi in mustard greens. The lowest average disease intensity was found in the 0.450 ml/l pyraclostrobin treatment (P5) with intensity values of 6.25% and 7.25%. Meanwhile, the highest average disease intensity was found in the control treatment (P0) with values of 15% and 26.75%. The results of the exploration of filoplane fungi from 24 samples obtained 33 isolates from 6 fungal genera, namely Aspergillus, Penicillium, Trichoderma, Curvularia, Fusarium and Alternaria.
| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | 0524040009 |
| Divisions: | Fakultas Pertanian > Hama dan Penyakit Tanaman |
| Depositing User: | Unnamed user with username nova |
| Date Deposited: | 15 Feb 2024 04:55 |
| Last Modified: | 15 Feb 2024 04:55 |
| URI: | http://repository.ub.ac.id/id/eprint/215516 |
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