? the operation of lifting. This applies especially to the center 

 rows which are used for analysis and the tonnage test. 



Much can be gained by employing throughout the season 

 the same laborers for all the work in connection with these test 

 plots, providing this is at all feasible. I doubt, however, that 

 many will be in such a fortunate situation, especially out West. 



9th : The test fields must be frequently inspected and any 

 irregularities or differences in germination, uniformity of com- 

 ing up, growing energy, vitality, appearance of and damage by 

 parasites and diseases, disease resistance and other features 

 that may present themselves to the student and close observer, 

 must be carefully and immediately recorded. 



10th : The sugar content and yield of a variety are greatly 

 dependent on the number of plants per square unit and the dis- 

 tance between beets. The same variety will show marked dif- 

 ferences in both, though 'growing under as nearly identical soil, 

 climatic and other conditions, as possible, when there are only 

 28,000 or 39,000 beets growing on an acre. A similar difference 

 will be observed in case of the same number of beets to the 

 square unit, but when they are unevenly distributed, i. e., a 

 great deal depends whether the plants grow uniformly all over 

 the surface of a field or whether there are places of a dense 

 stand and then again bare spots. It is therefore recommended 

 that for the determination of sugar and tonnage only such beets 

 be used, which have matured in a row or in sections of rows of 

 uniform stand. Wherever this condition exists the theoretical 

 yield of a variety is ascertained by multiplying the average 

 weight of the beets, harvested from such spots with normal 

 stands, with the calculated number of beets per acre. This 

 method is justified and generally accepted, since the number of 

 beets per acre is mostly dependent on the soil and growing con- 

 ditions, and not on the character of the beet type. Marked dif- 

 ferences in germination power and vitality from the outset are 

 always recorded during the first growth of the crop. When- 

 ever great differences occur in the stand of a test field, it is ad- 

 visable to remove the beets from the uneven spots the day be- 

 fore the beets are lifted for the test, leaving in the plots only 

 those beets which matured in rows of a uniform stand. By pro- 

 ceeding in this manner errors resulting through the addition 



