Goov SErp 1307 
same variety should be secured from different sources, having 
enough from each to make the general planting the following 
year in case it proved satisfactory. Having secured the seed, a 
germination test should be made of each to determine its value in 
this respect as well as to obtain an index to the rate of sowing. 
This germination test will probably show some variations within 
strains, while the vigor of the seedlings will also probably vary 
as may be seen by Fig. 376. 
Fic, 376.— VARIATION IN GERMINATION OF JERSEY WAKEFIELD CABBAGE 
SEED 
When the field planting is made, fifty plants will be swfficient.. 
As they approach maturity, a study of the respective strains will 
show differences regarding general type, time of maturity, solidity 
of head and general productiveness. In order to secure accurate 
data, weighings should be made of the heads of the respective 
strains. The following table shows the variability of six strains 
of Jersey Wakefield cabbage grown the past season, each of which 
was purchased from a seedsman of good reputation. 
Average 
Rec No. Date planted mee a pe cr 
Strain da. «ns May 5 2.33 tons 8.00 tons 1.65 Ibs. 
Strain 2..... May 5 38.17 tons 7.00 tons 1.45 lbs. 
Strain 3.005.» May 5 38.17 tons 7.50 tons 1.50 Ibs. 
Strain 4..... May 5 0.33 tons 8.00 tons 1.70 Ibs. 
Strain Deses May 5 5.00 tons 17.34 tons 1.60 lbs. 
Sian Ueeees  sesaes 5.00 tons 8.34 tons 1.70 lbs. 
