54 



BULLETIN 171), U. S. DEPARTMENT OF AGRICULTURE. 



and it is not so suitable for the purpose as the spade. It requires 

 a more skilled operator, the depth of the trench is limited by the 

 depth of the blade, and it is more difficult to run the lines straight. 

 Plow: Where the transplants are in long rows a plow has been 

 tried for making the trenches and has worked admirably. The 

 plow is of the small one-horse type and is equipped with an 8-inch 

 (depth of trench) landslide, a short moldboard, and a shield to divert 

 all the soil toward the moldboard side. 



"MAST* transplant board 



Plan Viev 



~~'~ r ' * . . r T -.- i ,- -r r-r , , | 



=& 







MICHIGAN" TRANSPLANT BOARD 

 Perspective View 



Fig. G. — Transplant board. 



TRANSPLANT BOARDS. 



Transplant boards are all essentially the same in principle. There 

 are two distinct types, the basis for the distinction being that in one, 

 exemplified by the "Mast board," so called from its designer, Mr. 

 William H. Mast, seedlings are threaded into the board from a bench 

 and afterwards lowered into the trench; while in the other, exempli- 

 fied by the "Michigan board," seedlings are threaded into the board 

 as it lies on the ground projecting over the trench (fig. 6). With the 

 first board a crew of from 5 to 7 men (2 planters, 1 or more trench- 



