● Manitoba's Insect and Disease Update for 2017 is prepared by John Gavloski and Pratisara Bajracharya and read Issue #11 (posted August 2, 2017) noting diamondback moth exceeding economic thresholds in some fields, higher numbers of soybean aphids but the appearance of natural enemies in response to their prey (so growers may refer to the Soybean Aphid App to help monitor and manage that pest), and high levels of bertha armyworm larvae have been scouted in Holland and Austin areas.
● Saskatchewan's Crop Production News - 2017 - Issue #4 includes information related to soybean pests prepared by Joel Peru. That report includes an update on scouting and management tips for painted lady butterflies (also described in Week 6) and Aphanomyces root rot. A reminder to watch for the final bertha armyworm pheromone trap counts update on the 2017 map.
● Watch for Alberta Agriculture and Forestry's Call of the Land and access the most recent Insect Update (August 3, 2017) provided by Scott Meers. This week diamondback moth numbers have exploded in southern Alberta so canola growers need to be scouting right up to swathing but be aware of Pre-harvest intervals! The annual grasshopper survey begins the first week of August for that province's Agricultural Fieldmen. In central Alberta, Red turnip beetle are now starting to feed, mate and lay eggs that overwinter. Painted lady butterfly - the 2nd generation is starting to fly and lay eggs now so sunflower, soybean and borage growers need to continue to monitor.
