Development of resistance to DMI fungicides in <i>Venturia nashicola</i>, the causal agent of the Japanese pear scab, in Fukuoka Prefecture, Japan.
-
- Kikuhara Kenji
- Fukuoka Agriculture and Forestry Research Center Faculty of Agriculture, Kyushu University
-
- Adachi Tatsuya
- Fukuoka Agriculture and Forestry Research Center
-
- Saito Noriko
- Fukuoka Agriculture and Forestry Research Center
-
- Iiyama Kazuhiro
- Faculty of Agriculture, Kyushu University
-
- Matsumoto Masaru
- Institute of Tropical Agriculture, Kyushu University
-
- Furuya Naruto
- Faculty of Agriculture, Kyushu University
Bibliographic Information
- Other Title
-
- 福岡県におけるDMI 剤低感受性ナシ黒星病菌の発生状況
- フクオカケン ニ オケル DMIザイ テイカンジュセイ ナシ クロボシ ビョウキン ノ ハッセイ ジョウキョウ
Search this article
Description
Japanese pear scab caused by Venturia nashicola is one of the most prevalent diseases of Japanese pear trees in Japan. We estimated the sensitivity of this fungus to sterol demethylation inhibitor (DMI) fungicides on the basis of the disease severity in young pear trees pretreated with DMI fungicides and inoculated with fungal populations collected from commercial orchards in Fukuoka Prefecture in 2015. The protective values, 26.4-100.0 for difenoconazole (active ingredient (a.i.), 25 ppm); 42.5-85.3, hexaconazole (a.i., 10 ppm); 25.8- 44.2, fenbuconazole (a.i., 27.5 ppm); and 30.6-49.9 fenarimol (a.i., 30 ppm), were significantly reduced in comparison with those recorded in 2007( P < 0.05, Welch test). In an experimental orchard in Fukuoka Prefecture, the efficacy of difenoconazole( protective value, 87.6 in cultivar ‘Kousui’ and 74.7 in cultivar ‘Housui’) was higher than that of hexaconazole (protective value, 73.3 in‘ Kousui’ and 59.3 in‘ Housui’) in 2016. In a sensitivity test on young pear trees, the efficacies of difenoconozole (protective values, 85.9) and hexaconazole (protective values, 42.6) against fungal population from that orchard were similar to those in the orchard test. Therefore, the resistance of Venturia nashicola to DMI fungicides has a broad range in Fukuoka Prefecture.
Journal
-
- Kyushu Plant Protection Research
-
Kyushu Plant Protection Research 64 (0), 1-6, 2018-11-28
The Association for Plant Protection of Kyushu
- Tweet
Keywords
Details 詳細情報について
-
- CRID
- 1390282763119745536
-
- NII Article ID
- 130007657620
-
- NII Book ID
- AN00055757
-
- ISSN
- 18840035
- 03856410
-
- NDL BIB ID
- 029357618
-
- Text Lang
- ja
-
- Data Source
-
- JaLC
- IRDB
- NDL
- Crossref
- CiNii Articles
- KAKEN
-
- Abstract License Flag
- Disallowed