The US winter wheat crop continues to struggle with adverse growing conditions.

The 30% of the crop rated good or excellent is the lowest reading for this time of year since 1996.

Poor ratings figures are concentrated in particular in hard red winter wheat-growing states such as Colorado, Kansas, Nebraska and Oklahoma.

Last week, Illinois, a major grower of soft red winter wheat showed a particular decline.

A year ago, the national reading was 74% good or excellent.

The table below gives details of the data.

State Percent of crop rated good or excellent
Change on week
Arkansas 70 -9
California 95 +5
Colorado 14 -6
Idaho 47 -3
Illinois 45 -6
Indiana 62 0
Kansas 33 -1
Michigan 43 +4
Missouri 57 0
Montana 16 +1
Nebraska 27 -5
North Carolina 81 -1
Ohio 62 0
Oklahoma 21 -8
Oregon 57 +6
South Dakota 20 -2
Texas 6 -1
Washington 56 0
18 States 30 -2
Source: USDA