How to translate text using browser tools
4 March 2019 Management of root rot of soybean in Alberta with fungicide seed treatments and genetic resistance
R. Nyandoro, K.F. Chang, S.F. Hwang, H.U. Ahmed, G.D. Turnbull, S.E. Strelkov
Author Affiliations +
Abstract

Root rot caused by Fusarium spp. is prevalent in soybean crops in Alberta, Canada. To mitigate the risk to soybean crops caused by Fusarium spp., nine seed-treatment fungicide formulations were assessed for their efficacy in promoting seedling survival, reducing root rot symptoms, and maintaining yield. Twelve soybean varieties were also assessed for resistance to seedling blight and tolerance to Fusarium root rot. All treatments except Vibrance + Apron XL improved emergence. All the fungicide formulations reduced root rot severity on Fusarium-inoculated soybean seedlings under field conditions and all treatments except Vibrance + Apron XL reduced root rot under greenhouse conditions. Among the varieties, ‘90M01’ showed lower reductions in emergence than all the others except ‘900Y61’ and ‘900Y81’ under field conditions and emergence losses for ‘900Y71’ were greater than all other varieties. ‘LS003RR’ had a lower disease severity rating compared with ‘TH32004R2Y’, ‘27005RR’, and ‘900Y71’. ‘NSC Portage’ had a higher nodulation rating compared with all the other varieties except ‘90M01’. Yield losses were consistently low for ‘TH32004R2Y’ and ‘900Y71’. Under greenhouse conditions, ‘900Y81’ had lower seedling losses compared with all the other varieties except ‘Tundra’ and ‘OAC Prudence’. ‘900Y71’ had a greater loss of emergence than all the other varieties except ‘NSC Portage’ and ‘LS005RR’. ‘900Y81’, ‘OAC Prudence’, and ‘Tundra’ had lower disease severity compared with all the other varieties except ‘TH27005RR’ and ‘900Y61’. Shoot length and dry mass were lower for ‘900Y81’ compared with all the other varieties, while root dry mass was lower for ‘OAC Prudence’ compared with ‘LS005RR’, ‘90M01’, ‘TH29002RR’, and ‘LS003RR’.

Copyright remains with the author(s) or their institution(s). Permission for reuse (free in most cases) can be obtained from Rightslink.
R. Nyandoro, K.F. Chang, S.F. Hwang, H.U. Ahmed, G.D. Turnbull, and S.E. Strelkov "Management of root rot of soybean in Alberta with fungicide seed treatments and genetic resistance," Canadian Journal of Plant Science 99(4), 499-509, (4 March 2019). https://doi.org/10.1139/cjps-2018-0266
Received: 16 October 2018; Accepted: 5 February 2019; Published: 4 March 2019
JOURNAL ARTICLE
11 PAGES

This article is only available to subscribers.
It is not available for individual sale.
+ SAVE TO MY LIBRARY

KEYWORDS
Glycine max
seed treatment
seedling blight
RIGHTS & PERMISSIONS
Get copyright permission
Back to Top