EXPERIMENT STATION BULLETINS. 



345 



degenerate into soft wheat under the influence of a greater amount of 

 moisture. 



The winter wheat varieties were planted upon rather low" ground south 

 of the creek, the plots having been used for strawberries for several 

 years and the ground having been partially drained since then. Por- 

 tions of the plots were still too wet, though no rust was observed until 

 the beginning of August, when a severe attack caused the premature 

 ripening of the grain upon the wettest portions. Upon the high and 

 well-drained ground north of the creek, one plot was practically de- 

 stroj'ed from apparently the same cause as that which was reported dur- 

 ing the past season. Some extensive experiments were started late in 

 the season for the purpose of ascertaining the true cause. The yield of 

 the several varieties is set forth in the following table. 



Wheat ill 1906. — Of the two varieties tested for the first time, Umillio 

 is said to be the hardiest of the Durum or Macaroni varieties. The seed 

 was kindly donated by the South Dakota Experiment Station, and the 

 milling quality of the wheat is said to be very poor. Kharkoo No. 

 9125 is a bearded red wheat recently imported from the Russian prov- 

 ince of that name by the U. S. Department of Agriculture which fur- 

 nished the seed. While the yield was not large, the quality of the wheat 

 is excellent. The yield of the spring varietis is shown in the following 

 table : 



Winter Wheat Experiments During 1906. — The plants which were 

 killed during the preceding two seasons were apparently healthy at the 

 beginning of winter. Here and there the lower leaves of some of the 

 plants were pale green or yellow^, but as these were few and were in- 

 variably found in depressions where the water from late rains and 

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