|The risk of economically significant grasshopper populations in 2015 has increased in parts of southern Alberta and decreased in central Alberta and Peace region.
Based on this survey the risk to annual cropland is now low throughout most of central and northern Alberta.
The grasshopper risk has been increasing in southern Alberta for the last few years and the survey shows that there are now some high risk areas for 2015.
The most notable increase in grasshopper populations in southern Alberta are in Fourty Mile and Willow Creek counties but the overall population in southern Alberta could translate into grasshopper problems if conditions are favorable in the spring.
Areas indicated with moderate to severe risk could experience problems with grasshoppers if environmental conditions favor the hatching and development of grasshoppers in late May through June. Localized factors such as light soils or south facing slopes result in an elevated risk of grasshopper infestations. Conditions in late spring 2015 will determine the extent of the grasshopper problems later this growing season. Infestation levels in individual fields are NOT indicated in this 2015 Grasshopper Forecast Map.