Flax growers can now use BASF Canada’s Headline to help protect crops against Pasmo. The company announced June 23 it’s picked up an amended registration for the strobilurin fungicide’s use in flax crops.
As a preventive against Pasmo (Septoria linicola), Headline is recommended at 120 millilitres per acre (0.3 litres per hectare) at eight to 10 days after first flower, with a minimum of 100 litres of water per hectare for ground application or 50 litres of water per hectare for aerial application, the company said.
The incidence of Pasmo in flax has become widespread, over the past few years, particularly in Manitoba, according to Sanfordarea farmer Garvin Kabernick, chairman of the Manitoba Flax Growers Association, in BASF’s release.
The company said the registration follows a “co-operative effort” between it and the Manitoba Minor Use Co-ordinators, the Manitoba Flax Growers Association and Flax Council of Canada.
Early-Season Pests Still An Issue
While normally we would be done talking about early-season pests like flea beetles and cutworms by now, with the canola crop behind this year by one to three weeks, growers should continue to be vigilant in scouting their fields,” advises Canola Council of Canada (CCC) senior agronomist Jim Bessel.
Bessel notes that normally most flea beetles would be gone due to pre-seed treatments, but slow emergence may have negated some of that. Canola is most susceptible to flea beetle damage during the cotyledon to two-leaf stage. The economic threshold for flea beetle control is when 25 per cent or more of the cotyledons are damaged. “Scout fields regularly to look for cotyledon damage,” says Bessel.
Other pests are being detected as well: Reports of cutworms are most common in Saskatchewan and Alberta fields that were cultivated last summer and had loose soil for the adults to lay eggs.
“There have also been isolated reports of other early-season pests like red turnip beetle. It has turned up in northwest Manitoba (in a garden area) and there have been some canola fields infested in the southern Peace region of Alberta,” says Bessel. “Because this insect moves into a field by migrating from a neighbouring field that was in canola last year, control usually can be achieved with perimeter spraying.”
The cabbage seed pod weevil has started showing up in southern Alberta and has been moving into southwestern Saskatchewan.
If the warm weather continues, grasshoppers may become a localized problem.