44 MAINE AGRICULTURAL EXPERIMENT STATION. I906. 



Arrangement of acre plots, pounds of fertiliser and constituents 

 applied and yield of potatoes. 



Fertilizer Used. 



Kind. 



Pounds per Acre in 

 Fertilizer Used. 



Phosphoric 

 Acid. 



Yield of 

 Potatoes. 



Watson's Improved. 



Home mixed 2' 



Watson's Improved. 



Home mixed 3 



Watson's Improved. 



Home mixed 3 A 



Watson's Improved. 



Home mixed 2 



Watson's Improved . 



Home mixed 3 



Watson's Improved. 



Home mixed 3 A 



Watson's Improved. 



Lbs. 



Lbs. 



Lbs. 



Lbs. 



Lbs. 



Bbls. 



1,600 



48 



96 



112 



80 



101 



1,200 



56 



80 



102 



100 



88 



1,250 



37 



75 



87 



62 



71 



1,000 



34 



70 



92 



125 



721 



1,250 



37 



75 



87 



62 



93 



1,000 



27 



80 



102 



100 



83 



1,250 



37 



75 



87 



62 



87 



1,200 



56 



80 



102 



100 



87 



1,250 



37 



75 



87 



62 



90 



1,000 



34 



70 



92 



125 



89 



1,250 



37 



75 



87 



62 



99 



1,000 



27 



.80 



102 



100 



99 



1,250 



37 



75 



87 



62 



106 



Bbls. 



The irregularities of the yields on the first 4 plots can be 

 explained by the differences in the character of the soil. Com- 

 paring the yields on the home mixed plots with the average of 

 the commercial fertilizer plots either side of the home mixed 

 plots the following results are obtained : 



Formula No. 2, 87 barrels ; Watson's Improved,, 87 barrels. 



Formula No. 3, 81 barrels ; Watson's Improved, 88 barrels. 



Formula No. 3A, 91 barrels; Watson's Improved, 96 barrels. 



It will be noted that the results on the whole are again lower 

 with home mixed goods than with the commercial fertilizer. 

 The results are not consistent, however, with each other, and 

 no conclusive interpretation of the results are apparent. It is 

 planned to continue the comparisons another season. 



