NDSU Extension - Ramsey County


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August 1, 2011 Agriculture Column


Rain last night amounted to ¾ of an inch according to the NDawn station at Crary.  I was awaken by the thunder and turned the t.v. to find some pretty ugly radar pictures of thunderstorms.  By the look of the radar I might have expected more so we can be thankful.  I heard unconfirmed reports of around 6 inches to the south and south east of us.  They have been getting hammered throughout that area this spring and summer.

Fusarium Head Blight

I was out in the country last week and was somewhat surprised to find varying amounts of Scab (fusarium head blight.  The other thing that surprised me was the amount of scab in more tolerant wheat varieties like Faller and Glenn that I found, especially considering these fields had also had a fungicide treatment.  My guess to part of the problem was timing of the fungicide as aphids appeared in the picture causing some producer to make an earlier application and included a fungicide in the application hoping to cover both at the same time.  Fungicide treatment for scab is very timely and just a day off will give you varying results.  Scouted fields by NDSU scouts found scab ranging from none to 14% in a winter wheat field.  I found percentages in the .5% up to 8% in the fields I checked.  I also found some white heads in fields appearing to be from root rot.  Symptoms of root rot appear with the grain head and the whole plant turning a greyish white.  These plants easily pull from the soil.  I also found a odd head that appeared to be stem maggot.  The heads turn color like being ripe but when pulling the head soon realized that the stem has been gnawed off. 


Soybean herbicide timing tour

                A tour of the soybean herbicide timing plot was held this past Friday.  Results of the trial were obviously visual.  We have two trials going at the same time.  The first trial is weed timing based on weed height and soybean height.  This trial will determine if a herbicide application of varying height weeds will affect yield.  We have data from Nebraska and Illinois but no information from North Dakota.  We are much different from those two states.  The other trial used  a roundup ready product combined with a fungicide.  We applied water rates of 10-20-30 gallon rates with a flat fan nozzle.  We then did another series of three applications using Interlock in the mix and the last trial used ultra low drift nozzles.  What differences there were.  You would have been real interested to see the differences and how that might affect your herbicide application.



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