Growers should be cautious - there is no data confirming whether or not Nysius niger is a pest causing consistent levels of economic damage. Insects can feed on field crop species yet never inflict measurable levels of damage and are therefore not worth managing. Careful scouting is warranted to assess how these insects are feeding AND if damage is occurring and to what extent. Also remember our @FieldHeroes who benefit from less insecticide use and instead reserve insecticide use for economically important pests that cause well-researched levels of damage.
|Figure 1. Nysius niger adult on the soil surface in a |
canola field in Saskatchewan photographed by J. Bogden.
|Figure 2. Lygaeid nymphs observed in the above |
canola field photographed by J. Bogden.