Vatankhah, Masoumeh, Saberi-Riseh, Roohallah, Moradzadeh Eskandari, Mojtaba, Afzali, Hamid (2019). Evaluation of some fungicides for the control of Fusarium dry rot of potato. , 8(3), 275-285. doi: 10.48311/jcp.2019.1434
Masoumeh Vatankhah; Roohallah Saberi-Riseh; Mojtaba Moradzadeh Eskandari; Hamid Afzali. "Evaluation of some fungicides for the control of Fusarium dry rot of potato". , 8, 3, 2019, 275-285. doi: 10.48311/jcp.2019.1434
Vatankhah, Masoumeh, Saberi-Riseh, Roohallah, Moradzadeh Eskandari, Mojtaba, Afzali, Hamid (2019). 'Evaluation of some fungicides for the control of Fusarium dry rot of potato', , 8(3), pp. 275-285. doi: 10.48311/jcp.2019.1434
Vatankhah, Masoumeh, Saberi-Riseh, Roohallah, Moradzadeh Eskandari, Mojtaba, Afzali, Hamid Evaluation of some fungicides for the control of Fusarium dry rot of potato. , 2019; 8(3): 275-285. doi: 10.48311/jcp.2019.1434

Evaluation of some fungicides for the control of Fusarium dry rot of potato

Journal of Crop Protection
Article 3, Volume 8, Issue 3, 2019, Pages 275-285    PDF (421.8 K)
Document Type: Original Research
DOI: 10.48311/jcp.2019.1434
Authors
Masoumeh Vatankhah1; Roohallah Saberi-Riseh* 1; Mojtaba Moradzadeh Eskandari2; Hamid Afzali2
1Department of Plant Protection, Vali-e-Asr University of Rafsanjan, Kerman, Iran.
2Plant Protection Research Department, Agricultural and Natural Resources Center, Mashhad, Khorasan-Razavi, Iran.
Abstract
Five fungicides, with active ingredients azoxystrobin, imazalil, thiabendazole, azoxystrobin + difenoconazole and fludioxonil + difenoconazole, were tested against two isolates of Fusarium solani and two isolates of F. oxysporum, causing potato dry rot in Mashhad region. PDA media amended with the fungicides significantly inhibited the mycelia growth of all Fusarium isolates incubated at 25 °C for 7 days; however only Imazalil and Thiabendazole completely stopped the mycelia growth of all fungal isolates even at their lower concentration (40 and 5ppm respectively). The mean penetration of F. solani FPO-67 and F. oxysporum FPO-39, the more virulent of the four isolates, after 21 days of incubation at 25-27 °C indicated that imazalil and thiabendazole at concentrations of 1.5 and 2/1000, completely inhibited the penetration of F. oxysporum FPO-39 into potato tubers, but in the case of F. solani FPO-67 all treatments (1, 1.5 and 2/1000) significantly reduced the development of dry rot compared to untreated control. In natural condition, tuber treatment with Imazalil and Thiabendazole (2/1000), prior storage, reduced F. solani FPO-67 development by 68 and 71.69% respectively. According to the results, these fungicides could play a role in integrated pest management against tuber-borne fungal pathogens.


Keywords
Azoxystrobin; Difenoconazole; Fludioxonil; F. oxysporum; F. solani; Imazalil; Mashhad; Thiabendazole
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