46 Maine Agricultural Experiment Station. 1919. 



NOTES ON THE EXPERIMENT IN I918. 



Series A on which Maine 340 oats were planted and Series 

 C on which potatoes were planted in 1918 were plowed in the 

 fall of 1917. Series B clover plots remained from the previ- 

 ous season's seeding. The ingredients of the several fertilizer 

 mixtures were carefully weighed and mixed by hand. Fertili- 

 zer for oats and clover plots was applied broadcast while that 

 for the potato plots was applied in the row. The clover plots 

 were harvested August 6, and the hay weighed in the field, after 

 curing. The seed sown was composed of equal quantities of 

 Alsike and Red Clover. Not over 10 per cent of the stand was 

 red clover. Fertilizer was applied May 9. 



The fertilizer was applied to the oat plots on May 9 and 

 planting was completed the same day. During the season some 

 variation of color in the plants was noticed on the several plots. 

 This, however, was not nearly so marked as observed on the 

 potato plots. These plots were harvested on August 30. 



Fertilizer was applied to the potato plots on May 9 and 

 planting was completed the same day. On June 19 the potato 

 plants being about 6 inches in height, a heavy frost occurred 

 freezing the vines to the ground. They did not fully recover 

 from this set-back for the remainder of the season. 



The variation in color ranged from a very light green on 

 the check plots and on the low nitrogen plots through a normal 

 medium green on the plots carrying more or less balanced fer- 

 tilizer, up to a very dark, deep green shade on the no-potash 

 plots. The dark green color of the no-potash plots was so dis- 

 tinct that these plots stood out in striking contrast to the re- 

 maining plots. The plots were thoroughly sprayed with bor- 

 deaux mixture during the season and no evidence of late blight 

 was observed. The plots were harvested on September 23, 1918. 



Discussion of Results. 



Although this is designed as a long term experiment and 

 only after the accumulation of several years' results can very 

 definite conclusions be reached, it is interesting and instructive 

 to make certain comparisons from year to year as the experi- 

 ment proceeds. 



