Studies on the cost-effective management of Alternaria blight of rapeseed-mustard (<em>Brassica spp.</em>)
Three systemic fungicides: Topsin-M (Thiophanate methyl, 70%WP), Ridomil MZ (Mancozeb, 64% + Metalaxyl, 8%WP), and Bavistin (Carbendazim, 50%WP) alone and in combination with four non-systemic fungicides Captaf (Captan, 50%WP), Indofil M-45 (Mancozeb, 75%WP), Indofil Z-78 (Zineb, 75%WP), and Thiram...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Firenze University Press
2007-08-01
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| Series: | Phytopathologia Mediterranea |
| Online Access: | https://oajournals.fupress.net/index.php/pm/article/view/5217 |
| _version_ | 1811222254822883328 |
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| author | M.M. Khan R.U. Khan F.A. Mohiddin |
| author_facet | M.M. Khan R.U. Khan F.A. Mohiddin |
| author_sort | M.M. Khan |
| collection | DOAJ |
| description | Three systemic fungicides: Topsin-M (Thiophanate methyl, 70%WP), Ridomil MZ (Mancozeb, 64% + Metalaxyl, 8%WP), and Bavistin (Carbendazim, 50%WP) alone and in combination with four non-systemic fungicides Captaf (Captan, 50%WP), Indofil M-45 (Mancozeb, 75%WP), Indofil Z-78 (Zineb, 75%WP), and Thiram (Thiram, 75%WP) were evaluated both in vitro and in vivo for their effectiveness to manage Alternaria blight of rapeseedmustard caused by Alternaria brassicae. A pure culture of the pathogenic fungus was applied in the field at 2 g colonized sorghum seeds kg-1 soil. All the fungicides were evaluated for their efficacy at various concentrations, 50, 100, 150, 200 and 500 ppm, and were sprayed in the field at 0.2% a.i. l-1. All fungicides significantly reduced the severity of the disease but Ridomil MZ was most effective. Topsin-M at a concentration of 500 ppm was the most effective in reducing radial growth of the pathogenic fungi (74.2%). Ridomil MZ reduced disease severity by 32% and was followed in effectiveness by the combination Bavistin+Captaf (26.5%). Maximum yield was obtained in plots sprayed with Bavistin+Captaf (1198 kg ha-1) followed by Bavistin+Indofil Z-78 (1172 kg ha-1). It was worth noting that the highest net profit as well as the highest cost-benefit ratio was obtained with Bavistin+Indofil Z-78 (1:3.2), followed by Bavistin+Captaf (1:1.3). |
| first_indexed | 2024-04-12T08:12:38Z |
| format | Article |
| id | doaj.art-9f047cedc5c24fe6bb3da4e56eaf5584 |
| institution | Directory Open Access Journal |
| issn | 0031-9465 1593-2095 |
| language | English |
| last_indexed | 2024-04-12T08:12:38Z |
| publishDate | 2007-08-01 |
| publisher | Firenze University Press |
| record_format | Article |
| series | Phytopathologia Mediterranea |
| spelling | doaj.art-9f047cedc5c24fe6bb3da4e56eaf55842022-12-22T03:40:55ZengFirenze University PressPhytopathologia Mediterranea0031-94651593-20952007-08-0146210.14601/Phytopathol_Mediterr-21582154Studies on the cost-effective management of Alternaria blight of rapeseed-mustard (<em>Brassica spp.</em>)M.M. KhanR.U. KhanF.A. MohiddinThree systemic fungicides: Topsin-M (Thiophanate methyl, 70%WP), Ridomil MZ (Mancozeb, 64% + Metalaxyl, 8%WP), and Bavistin (Carbendazim, 50%WP) alone and in combination with four non-systemic fungicides Captaf (Captan, 50%WP), Indofil M-45 (Mancozeb, 75%WP), Indofil Z-78 (Zineb, 75%WP), and Thiram (Thiram, 75%WP) were evaluated both in vitro and in vivo for their effectiveness to manage Alternaria blight of rapeseedmustard caused by Alternaria brassicae. A pure culture of the pathogenic fungus was applied in the field at 2 g colonized sorghum seeds kg-1 soil. All the fungicides were evaluated for their efficacy at various concentrations, 50, 100, 150, 200 and 500 ppm, and were sprayed in the field at 0.2% a.i. l-1. All fungicides significantly reduced the severity of the disease but Ridomil MZ was most effective. Topsin-M at a concentration of 500 ppm was the most effective in reducing radial growth of the pathogenic fungi (74.2%). Ridomil MZ reduced disease severity by 32% and was followed in effectiveness by the combination Bavistin+Captaf (26.5%). Maximum yield was obtained in plots sprayed with Bavistin+Captaf (1198 kg ha-1) followed by Bavistin+Indofil Z-78 (1172 kg ha-1). It was worth noting that the highest net profit as well as the highest cost-benefit ratio was obtained with Bavistin+Indofil Z-78 (1:3.2), followed by Bavistin+Captaf (1:1.3).https://oajournals.fupress.net/index.php/pm/article/view/5217 |
| spellingShingle | M.M. Khan R.U. Khan F.A. Mohiddin Studies on the cost-effective management of Alternaria blight of rapeseed-mustard (<em>Brassica spp.</em>) Phytopathologia Mediterranea |
| title | Studies on the cost-effective management of Alternaria blight of rapeseed-mustard (<em>Brassica spp.</em>) |
| title_full | Studies on the cost-effective management of Alternaria blight of rapeseed-mustard (<em>Brassica spp.</em>) |
| title_fullStr | Studies on the cost-effective management of Alternaria blight of rapeseed-mustard (<em>Brassica spp.</em>) |
| title_full_unstemmed | Studies on the cost-effective management of Alternaria blight of rapeseed-mustard (<em>Brassica spp.</em>) |
| title_short | Studies on the cost-effective management of Alternaria blight of rapeseed-mustard (<em>Brassica spp.</em>) |
| title_sort | studies on the cost effective management of alternaria blight of rapeseed mustard em brassica spp em |
| url | https://oajournals.fupress.net/index.php/pm/article/view/5217 |
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