206 



Missouri Agricultural Report. 



The two poorest yielding varieties are not by any means the most 

 inferior varieties we have grown at the Station, since we usually drop 

 very poor varieties of corn after one or two years' test. The variety 

 that has been carried as much as four or five years is at least up to the 

 average, or above it. It will be noted that the average yield of the two 

 best varieties is twelve bushels above the average yield of the two poorest. 

 When we remember that all of the varieties were grown under exactly 

 the same conditions, and that the two best varieties cost no more to 

 plant, cultivate or harvest, and yet gave a clear average of twelve bushels 

 to the acre better yield for a period of four years, the value of replacing 

 the poorest varieties by the best will be seen. 



WINTER WHEAT AND OATS. 



With winter wheat and oats similar results covering a period of five 

 years have also been obtained, as is shown by the following tables : 



WHEAT. 



As with corn, the two best varieties in each case are compared with 

 the poorest varieties grown during that period. It will be noted that 

 the best variety of winter wheat has out yielded the two poorest varieties 

 by an average of eleven bushels to the acre, while the best variety of 

 oats has out yielded the poorest variety by sixteen bushels to the acre. 



At the Experiment Station farm, by growing the best variety of 

 corn, wheat and oats, instead of one of the poorest varieties in each 

 case, we would get twelve bushels more per acre each year, or a total for 

 five years of sixty bushels; for the wheat, we would get a total of fifty- 

 five bushels more per acre, and for the oats a total of eighty bushels 

 more per acre. This large total of increased yield per acre is all clear 



