SUB-WATERING RADISHES. 



163 



The sub-watered section yielded twice as many bunches of 

 marketable roots as did the other. The per cent of marketable 

 roots was much higher and the average size greater from the 

 sub-watered section. The difference in the yield of the two 

 sections was more than enough to make the difference between 

 profit and loss in growing the crop. 



As will be observed from the above table, more than half of 

 the roots are classified as "2d-class and culls." It should be 

 said in explanation, that about half of the number so classed 

 were simply of small size ; many of them were inferior or dis- 

 eased ; others were of good size and quality, but badly disfigured 

 by attacks of millipedes. The following table shows the relative 

 difference in this respect : 



QUALITY OF RADISHES FROM SUB-WATERED AND SURFACE-WATERED 

 BENCHES COMPARED. 





aj 



a3 















>,73 







Treatment. 





m 



^0 



9 a 







.2 













OJ 















CM 





3 







CO 



M ^ 



Q 



« 



Sub-watered : 













Number 



2)2 

 3,752 



119 

 1,232 



77 

 1,043 



6 

 70 



63 



Weight (in grams) 



245 







Surface-watered : 













Number 



118 



117 



12 



22 



83 



Weight (in grams) 



1,498 



1,008 



112 



224 



406 







The number of roots attacked by millipedes was much greater 

 on the sub-watered section — a significant fact in connection with 

 the control of this pest. It is also seen that the number of 

 diseased and inferior roots was much larger on the surface- 

 watered section. This, together with the fact previously noted, 

 that there was much more trouble from "damping oft'" on this 

 section is also significant. The injured roots were mostly of 

 marketable size but deformed, as shown in fig. 8, following p. 229. 



II 



