LARGE AND SMALL RADISH SEED. 



159 



Second Trial: The difference in favor of the selected large 

 seeds in the first trial was so striking that the work was repeated 

 upon a larger scale the present year. The variety chosen for 

 this purpose was "Non Plus Ultra," an early turnip-shaped 

 sort which we have found specially good for forcing. The 

 seeds were sown in six rows and at the end of two weeks the 

 plants were thinned to eighteen in each row. Owing to the 

 dark weather, many of these plants "damped off" after the thin- 

 ning, hence a difference in the numbers, considered in the table. 

 The following results were obtained : 



Number of seeds planted, 300 each, large and small. Weight 

 of large seed, 4.19 grams. Weight of small seed, 1.78 grams. 

 Time from planting to harvesting, seven weeks. Temperature 

 of house, 45°-6o°. 



YIELD OF KADISHES FROM LARGE AND SMALL SEEDS COMPARED. 











m 











? 





a; 



o_2 





Ok » 



Oa>-S 



Size. 



"3.2 



Z08 



1, m 



gS2 



-25 



C C3 S 



SI 5 







11 



5 « 



:2 







Large 



196 



87 



55 



•i2 



10 



«3.3 



71.4 



Small 



197 



98 



13 



75 



10 



*l!t.2 



15 9 







*The very low percentage of first-class roots is due to immaturity, rather than 

 to other inferiority. 



There was practically no difference in the total germination 

 of the two lots, though in both cases the per cent of germination 

 was low. At the time of harvesting there were sixty-three per 

 cent of the roots, from large seed which were strictly first-class, 

 as opposed to thirteen per cent from the small seed. 



Third Trial: At the same time that the preceding work was 

 being carried on, another lot of seed, of both sizes, was planted 

 upon a bench which was used for testing the value of sub-water- 

 ing. As before there was some trouble with damping ofif after 

 the plants were thinned. The results are detailed below : 



Number of seeds of each kind 200. Weight of large seed 

 2.8 grams. Weight of small' seed 1.2 grams. Time from 

 planting to harvesting, seven weeks. Temperature of house, 

 45°-6o°. 



