Fertilizer and Seeding Experiments with Root Crops. 425 



TABLE IV 



Comparison of Yields on Plats Sown With Hand Drill and Grain Drill 



Respectively 



An inspection of this table shows a marked decrease in yield where 

 the grain drill was used. This was due largely to the fact that the seed 

 was planted so deep that much of it failed to germinate, thus reducing 

 the stand, as will be seen by a comparison of the number of plants in 

 the last column of Table III. It is probable that the difference between 

 the two methods of planting could be partly eliminated by a shallower 

 setting of the grain drill. On light soils the deeper planting would 

 undoubtedly be less detrimental. 



Rate of seeding. Each of the different rates gave a sufficient number 

 of plants to maintain a good stand. The yields are given in the fol- 

 lowing table: 



TABLE V 



Comparison of Yields on Plats Receiving Different Amounts of Seed 



Plat 

 No. 



1481 



1476 



1490 



1483 



1477 

 1487 



i486 



1480 



1489 



Amount of seed per acre 



Home grown, hand drill, 8 lbs. 

 Home grown, hand drill, 12 lbs. 

 Home grown, hand drill, 16 lbs. 

 Home grown, grain drill, 8 lbs. 

 Home grown, grain drill, 12 lbs 

 Home grown, grain drill, 16 lbs 

 Commercial, grain drill, 8 lbs. . 

 Commercial, grain drill, 12 lbs.. 

 Commercial, grain drill, 16 lbs. , 



Average, 8 lbs 



Average, 12 lbs 



Average, 16 lbs 



Corrected 

 yield per 

 acre, tons 



21 

 20 

 20 



23-83 

 20. 12 



87 

 08 



96 



17.14 



18.00 



24.71 



18 



20, 



21 



19 



42 

 64 

 93 

 14 



No. of plants 



per acre, 



thousands 



21 



21 



20 



17 



17 



17. 6 



16.3 



20. o 



18.6 



18.4 



195 



18.5 



