442 



BULLETIN No. 127. 



[August, 



TABLE 19. Low PROTEIN PLOT (CROP OF 1902) 

 (Weights, extremes 10 g. and 180 g., average 68 g.) 



*Very small, rejected. 



The general averages here, after rejecting the results from such 

 hills as were far below marketable size indicate that there is no 

 definite response to selection for high or low prcrtein. It is true 

 that the average of nitrogenous matter when calculated to the 

 water free basis is 2.11 percent higher in the crop from the high 

 nitrogen selections than in the crop from the low nitrogen selec- 

 tions. This, however, is wholly due to the difference in the aver- 

 age contents of dry matter, for the nitrogenous matter when cal- 

 culated to the fresh substance, are practically the same. 



There is an indication that the low protein potatoes are quicker 

 to mature, for in the same growing period they had elaborated 

 about twice as much fresh material, which contained 2.5 percent 

 more dry matter than the high protein potatoes. 



The poor development of the potatoes this season necessitated 

 a return to other seed for the continuation of the experiment. This 

 reduces the value the results of the second might have, as it was 

 the intention to continue selecting from the same stock, with the 

 hope of testing a possible cumulative effect of selection. 



