64 MAINE AGRICUIvTURAE EXPERIMENT STATION. I915. 



fertilizer was used. On plots C and D 8 cords of well rotted 

 fann manure, as well as 600 pounds 4-8-7 commercial fertil- 

 izer, were applied to each in 1912. On plots A and D potatoes 

 were grown again in 19 12, being a second crop in succession. 



The experiment is soimewhat unsatisfactory, partly because 

 that in 1912 the yield of potatoes was small, due to the com- 

 bined attack of Rhizoctonia and early blight. Also sweet corn 

 has never been grown to advantage at Highmoor Farm. As 

 noted, the crop in that year was small. 1912 had a dry summer 

 which doubtless contributed to the reduced yield. 



The results are given in the following tabulation. It will be 

 noted that there is no special effect to be attributed to the 

 sweet corn on the after crops, although the yield of sweet corn 

 was materially less on commercial fertilizer than on the farm 

 manure plus commercial fertilizer. The yield of hay in 1914 

 was greater on the plots that had farm manure in 1912. 



Rotation Experiment. Treatment and Yields. 



In ipii Potatoes Grown on all Plots, Good Yields, i,6oo lbs. 



4-8-1 Fertiliser Applied to Bach Plot. 



Ypar. 



Fertilizbb Used. 



Yields. 



1912 

 1913 



Plot A. 

 1700 lbs. 4-8-7 commercial fertilizor 



89 bushels potatoes, 

 f 54 bushels oats. 

 \ 2225 lbs. straw. 

 4725 lbs. hay. 



/ 2808 lbs. sweet corn ears. 



1914 





1912 



Plot B. 

 1700 lbs. 4-8-7 commercial fertilizer 



1913 

 1914 



50C lbs. 4-8-7 commercial fertilizer 



\ 3620 lbs. stalks. 

 / 58 bushels oats. 

 1 2230 lbs. straw. 

 4750 lbs. hay. 



/ 3482 lbs. sweet corr. ears. 

 j 3385 lbs. stalks. 



1912 

 1913 



Plot C. 



8 cords farm manure 



600 lbs. 4-8-7 commercial fertilizer 



500 lbs. 4-8-7 commercial fertilizer. . . 



1914 

 ■1912 



350 lbs. top dressing* 



Plot D. 



\ 2475 lbs. straw. 

 5000 lbs. hay. 



87 bushels potatoes. 



/ 54 bushels oats. 

 1 2120 lbs. straw. 

 5065 lbs. hay. 



1913 



600 lbs. 4-8-7 commercial fertilizer 



1914 











*100 lbs. nitiate of soda, 150 lbs. acid phosphate and 100 lbs, muriate of potash 



