September 21, 2011
US corn and soy rating affected by freeze
The North American freeze had done more than expected damage to corn and soy, resulting in a rating downgrade for Minnesota.
The condition rating of the soy crop in North Dakota tumbled by nine points to 60%, in terms of the proportion rated in "good" or "excellent" health, while that in Wisconsin fell by four points to 75%.
"Hard frost brought an early halt to the growing season" in northern Wisconsin, noting temperatures in the 20s Fahrenheit in many areas said USDA.
"While spared a killing freeze, crops in southern Wisconsin were still contending with moisture shortages," it added.
However, more significant to the national picture was the impact on crops in Minnesota one of the four US states to produce more than one billion bushels of corn and the third ranked soy growing state.
While the Minnesota Corn Growers Association estimated that the freeze had little impact on yields, the percentage of the state's corn crop seen good or excellent was cut by seven points to 56%, with the figure for soy's slashed by ten points to 51%.
"Crop ratings in Minnesota showed pronounced falls," Paul Deane at Australia & New Zealand Bank said.
The USDA said that "overnight temperatures on September 15 fell into the low-30s to mid-20s Fahrenheit setting record lows in several Minnesota communities.
"Freezing temperatures ended the growing season in portions of the state."
The rating of Minnesota's soy crop has now fallen below that of 2007, when the state's soy production tumbled by more than 20% year on year.
The national crop, too, is now rated below that in 2007, when US output fell 16% on a yield of 41.7 bushels an acre.
The USDA has the current crop, which will have been sown largely with more advanced seed, at 41.8 bushels per acre.
The US corn crop, downgraded by two points to 51%, is in significantly worse condition than anything seen in the previous five years.
In Canada too, the frost had significant impact on crops, thanks to temperatures as low as minus eight degrees Celsius in Saskatchewan.
The "widespread frost" had, in Canada's Prairies region, brought the growing season "to an end for all but western Alberta", the Canadian Wheat Board said.