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NW Iowa/SW Minnesota/South Dakota Crop UpdateJuly 20, 2010
Posted by:
Tony Lenz, Regional Sales Agronomist
Crop progress is quite different comparing South Dakota to NW Iowa and SW Minnesota, especially the rolling hills and well-tiled farms of my eastern 2 states I cover. Not having tile on your farm is the most limiting factor to yield I see in my field visits, when it used to be moisture stress. NW Iowa and SW Minnesota have great yield potential, but the pot holes with stunted yellow corn will limit top end. These areas tasseling is all over the board with some fields starting 2 weeks ago and some tassels just starting to come out in some fields. We are also seeing nitrogen and potash deficiencies, mainly from denitrification or some leaching on lighter soils. Yields in South Dakota will be very up and down. To the north, some producers only got about two-thirds of their crops planted (or worse) and soybean planting extended into July. All you can say here is that it has been a tough year!
Soybeans have been growing extremely slow, showing just how little they like excessive soil moisture early in the season. I have been on many calls looking at brown spot and bacterial blight. This should be a good year for producers to split fields and try some fungicide on beans to see if it pays for itself. Just starting to see aphids in my area this past week, but so far numbers are very low.
