Thursday, 19 July 2018

Provincial Insect Pest Reports (Jul 19, 2018; Wk 11)

Provincial entomologists provide insect pest updates throughout the growing season so we link to their most recent information: 

Manitoba's Insect and Disease Updates for 2018 can be accessed here. Issue #7 (posted July 11, 2018) notes monitoring is underway for grasshoppers, armyworms in some cereal fields but no soybean aphids reported yet. Also find a summary of cumulative bertha armyworm counts from pheromone traps for 2018.

Saskatchewan's Crop Production News for 2018 is posted with Issue #4 now available. This issue includes a report from the Crop Protection Lab summarizing disease and insect samples submitted this growing season. Notable insects submitted so far include Enchytraeids, barley thrips, and red bugs identified as soft-winged flower beetles (Collops sp.) and white-margined burrower bugs (Sehirus cinctus). Growers can review articles on how to scout for cutworms, how to assess plant stand densities in flax or canola, and for flea beetles, pea leaf weevils. Also note the following diamondback moth pheromone trap interception counts from across the regions (updated June 27, 2018):


Alberta Agriculture and Forestry's Call of the Land regularly includes insect pest updates from Scott Meers. The most recent Call of the Land (posted July 12, 2018) identified that SOME bertha armyworm pheromone traps over a wide geographic range have started to intercept higher numbers of moths. This means in-field scouting will be critical in 10-14 days (as larvae move up from leaves to feed among canola pods). Processing of canola survey samples has begun; initial samples suggest lower diamondback moth and Lygus bug numbers so far compared to 2017 but higher numbers of small parasitoid wasps associated with diamondback moths, and a pocket of grasshoppers (clearwinged) near Carmangay AB.