The latest Saskatchewan crop report says hot dry weather last week caused significant damage to many crops.
The report says yield potential and crop quality will be affected in many regions.
Crops are stunted, thin, yellowing in colour and prematurely drying down in many areas due to heat stress.
40 percent of spring cereals are in the heading stage.
Significant rainfall is needed soon to allow crops to properly fill and avoid further crop damage.
Topsoil moisture levels continue to deteriorate with 18 percent adequate, 51 percent short and 31 percent very short.
Rainfall ranged from nil to 21 millimeters in Wynyard, Rosetown and Porcupine Plain areas.
Crop damage this past week was due to hot dry weather, strong winds, gophers and grasshoppers.
Haying continues with 14 percent baled or put into silage.
Estimated yields are considerably lower than expected with no second cut expected in many areas.
Pastures are rated 11 percent good, 32 percent fair, 38 percent poor and 18 percent very poor.