134 HATCH EXPEEIMENT STATION. [Jan. 



tions, — one-half applied broadcast just before planting the 

 seed, the other half scattered about the plants and cultivated 

 in on June 30, at which time the crop was about half grown. 

 The field was ploughed on May 7 , at which time the rye had 

 made considerable growth. There were marked differences 

 on the different plots, but no clearly defined difference 

 beween the limed and unlimed portions of the several plots. 

 The fertilizers in double the usual amounts were spread 

 broadcast on May 12 and immediately harrowed in. The 

 variety of potatoes planted was the Delaware, the seed being 

 grown in the adjoining town of Hadley. In preparation for 

 planting the seed was soaked in a solution of corrosive sub- 

 limate, for the prevention of scab. It was then dried, and 

 the tubers were cut into pieces with two good eyes each, 

 and planted at once. The date of planting was May 13. 

 The potatoes started well, the crop was thoroughly cared for, 

 and there were no accidental conditions recognized as inter- 

 fering with the normal development of any of the plots. 

 The potatoes were sprayed twice, — on July 11 with Bow- 

 ker's Boxal, and on July 2fi with Bowker's Bodo, to which 

 a suitable quantity of Paris gi"een for destruction of bugs 

 was added. Both sprajangs were effective in destroying bugs 

 but not fully effective in preventing blight, which, however, 

 was not serious on this field, where the growth of the tops 

 was comparatively light. There was no rot whatever, 

 although this disease was prevalent on similar soils in the 

 immediate neighborhood. The crop was dug on September 

 8 and 9. All tulbers were smooth, but of rather small 

 average size ; they were, however, of excellent quality. 

 The following tables show the fertilizers applied to the sev- 

 eral plots, the yields per acre, and the gain or loss compared 

 with the nothing plots : — 



