Abstract Detail

Recent Topics Posters

Islam, Tonima [1], Vera, C. [2], Slaski, Jan [3], Mohr, R. [4], Rashid, Khalid Y. [5], Kutcher, R [6].

Benefit of using fungicides to control pasmo and their impact on seed yield in flax.

Pasmo disease of flax, caused by Septoria linicola (Speg.) Garassini, is frequently observed in western Canada every year.  It has the potential to reduce both the quality and quantity of flax and when severe, seed yield may be reduced by as much as 60-70%.  The objectives of this study were to determine the impact of fungicide and application timing on pasmo in flax in terms of seed yield and quality at Brandon, MB; Melfort, SK; Saskatoon, SK; and Vegreville, AB in 2014.  Two active ingredients (pyraclostrobin and fluxapyroxad) were applied to flax as single applications and in combination at mid-flower, late flower and at both stages.  Fluxapyroxad was the most effective to reduce disease severity at Brandon and Saskatoon, and was similar to pyraclostrobin at Melfort.  Pasmo did not occur at Vegreville.  The timing of fungicide application did not impact pasmo severity at any of the three sites and a single application was similar to two applications. Fungicides improved the seed yield over the check, but there was no significant difference among the fungicides at Brandon, Melfort and Vegreville site. However, at Saskatoon, the combination of pyraclostrobin and fluxapyroxad increased the seed yield almost 59% as compared to the check, followed by fluxaplroxad (40%) and pyraclostrobin (28%).  The Combination of fluxapyroxad and pyraclostrobin was the most effective to reduce disease severity, especially at Brandon and Saskatoon.

1 - University of Saskatchewan, Plant Sciences, 51 Campus Dr., Agriculture Building, Saskatoon, SK, S7N 5A8, Canada
2 - Agriculture & Agri-Food Canada, Melfort, SK, Canada
3 - Alberta Innovates Technology Futures, Ecosystems and Plant Sciences, Hwy 16A-75 Street, Vegreville, AB, T9C 1T4, Canada
4 - Agriculture & Agri-Food Canada, Morden, MB, Canada
5 - Agriculture and Agri-Food Canada (AAFC), Science and Technology Branch, Cereal Research Centre, Morden, 101 Route 100, Morden, Manitoba, R6M 1Y5, Canada
6 - University of Saskatchewan, 51 Campus Dr., Agriculture Building, Saskatoon, SK, S7N 5A8, Canada

Keywords:
Flax.

Presentation Type: Recent Topics Poster
Session: P
Location: Hall D/The Shaw Conference Centre
Date: Monday, July 27th, 2015
Time: 5:30 PM
Number: PRT018
Abstract ID:1802
Candidate for Awards:None