54 MAINE AGRICULTURAL EXPERIMENT STATION". I9OI. 



suspicious if blight were not on other plots. Rows 177 to 192. 

 Pretty well sprayed. Only an occasional leaf with blight spot 

 except* on west end, where for four rods quite a good many of the 

 lowest leaves are dead. Rows 193 to 208. Spraying not very 

 good. At west end many of lowest leaves dead with blight. The 

 blight grows less and less for 6 to 8 rods, beyond which there 

 are very little indications of blight except in a hollow where 

 water stands after a rain, and on a knoll near the east end (the 

 potatoes on this knoll when dug were scabby). Rows 209 to 

 224. Fairly well sprayed. Very little indications of blight on 

 east half. West half about the same as 193 to 208. Unsprayed 

 rows at north end of field. Tops at east end very large and 

 spreading. At west smaller with blossoms mostly fallen. Blight 

 on east part abundant on lower leaves. A good many lower 

 leaves dead and many others with spots of blight a half inch or 

 more across. Very little rust on middle and west end. Un- 

 sprayed rows at south end of field. Blight abundant in marked 

 contrast to rows 209 to 224 adjoining. 



Aug. 23. Walked through each plot and made notes. The 

 blossoms are practically off from the whole piece. Some of the 

 plants are beginning to turn yellow, — apparently ripening. The 

 effect of spraying with copper salts is very evident on all the 

 plots. Some plots are still entirely free from blight. Rows 1 

 to 16. Blight has made very little progress; there is practically 

 none except on the east end for 4 rods or so and no badly 

 affected plants. Rows 17 to 32. A little blight on the whole 

 plot. The plants at east end and in hollow have considerable, 

 others very little blight. Many plants entirely free from blight. 

 Rows 33 to 48. Practically no blight on west half. The east 

 slope (quite steep) has some blight for 2 rods. Otherwise no 

 blight except on an occasional leaf. Rows 49 to 64. Practically 

 no blight. A few leaves on east side of slope (steep, but not so 

 steep as on rows 35 to 48) show signs of blight. Rows 65 to 80. 

 Practically no signs of blight. A few leaves are brown and 

 curled on edges. Xo spots as in blight. Rows 81 to 96. A few 

 blight spots in leaves on most of the plants. There are practi- 

 cally no dead leaves, however. Rows 97 and beyond. The 

 blight has made practically no progress on these plots since 

 Aug. 24. The leaves which were badly affected then are dead. 

 Very little new blight apparent. 



