Fertilizer Management

Silicon uptake could increase canola stress tolerance

If canola could be transformed with two target genes for silicon uptake, the crop could become more tolerant to biotic (pathogen) and abiotic (weather) stress. In the end, this study could transform only one of the two target genes, and resulting stress tolerance to blackleg and drought were not noticeably different from controls. They determined...
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Fertilizer Management

Are we measuring the right soil nitrogen pool?

Researchers wanted to see if soil protein, extracted using the ACE/MACE methods, is an appropriate measure of the soil nitrogen that potentially becomes available during the growing season. They found only a weak correlation, and concluded that current soil test recommendations provide an acceptable measure of biologically available nitrogen. “Revisiting nitrogen fertilizer recommendations for Saskatchewan:...
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Integrated Pest Management

Details on clubroot infection set stage for better resistance

Science Edition: Integrated Pest Management
This is one of the first studies to characterize effector proteins with key roles in clubroot infection and disease progression. Results provide a valuable resource for the identification of new clubroot resistance genes. “Genome wide functional analysis of Plasmodiophora brassicae effectors and the management of clubroot disease” Peta Bonham-Smith, University of Saskatchewan SaskCanola, Saskatchewan’s Agriculture...
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Integrated Pest Management

Diamondback moth thresholds may need adjustment

Science Edition: Integrated Pest Management
Yield reductions at current nominal thresholds of one to two DBM larvae per plant in canola may not be significant. Therefore, the nominal thresholds for DBM in canola may need to be increased to a slightly higher number of larvae per plant. Dynamic action thresholds incorporate the effect of natural enemies on pest control. “Identification...
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Integrated Pest Management

Testing thresholds and insecticides for pollen beetle

Science Edition: Integrated Pest Management
Pollen beetles were susceptible to three of four insecticides tested. Yield reduction was detected at seven to nine beetles per plant, but not at four beetles per 10 sweeps. Pollen beetles were not detected in the Prairies and no native parasitoids were found attacking pollen beetle larvae in Atlantic Canada. “Generate knowledge and control strategies...
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