Thrips feed on flowers and buds of a range of crops. In canola, pods damaged by thrips are often curled and tend to drop prematurely. Although the research showed insecticide treatments could control thrips for a short time, there were no significant differences in yield between treated and untreated plots.
Leptosphaeria maculans, the cause of blackleg, causes significant yield loss in canola crops. In this study, researchers compared pathogen survival and inoculum production of infested residues in both blackleg resistant cultivars and blackleg susceptible herbicide tolerant cultivars.
Canola production in the semiarid prairie is susceptible to high temperature and water stress. Field experiments were conducted at Swift Current over 4 years from 1998 to 2001 to determine the effect of seeding management, stubble management and population densities on the productivity of canola and mustard in the Brown soil zone.
The bolded first paragraph from the report doc in Heading 4 text style. The first couple sentences of this summary will be used as the Excerpt in the research report database settings.
Lygus bugs and cabbage seedpod weevils are serious insect pests of canola in southern Alberta. In 2000 and 2001 a plot insecticide trial was conducted to develop a chemical management strategy for the two pests.
In a previous study, researchers confirmed that canola declined between 1991 and 1999, however yields of other major crops continuously increased. Although some regional differences existed, no conclusive evidence for the yield decline was found.
Blackleg, rhizoctonia seedling blight and sclerotinia stem rot are economically important diseases of canola, which have caused millions of dollars of losses in western Canada.
Canola is a major cash crop of the Parkland region of the Prairies where many soils (especially Gray Wooded) are deficient or potentially deficient in plant-available sulphur (S) for canola.
In the mid 1990s, Lygus bugs were becoming an increasingly important pest in canola. Researchers from Agriculture and Agriculture Canada in Ottawa and Saskatoon launched a three-year project in 1998 to develop a routine assay and diagnostic key to identify populations of Lygus in western Canada and immature stages of Peristenus species, a potential biological control.
In the mid-1990s, given the introduction of several blackleg resistant canola cultivars and the widespread adoption of reduced tillage systems, growers were interested in finding out if canola could be planted more often within a rotation.
In the late 1990s, fungicide application was the most important control method for Sclerotinia stem rot of canola for most producers.
The cabbage seedpod weevil was first discovered in 1995 in canola fields in Alberta; and by 1999 serious outbreaks occurred throughout southern and central Alberta.
