62 



AGRICULTURE OF MAINE. 



gin, which is widely used for orchard purposes. This soil 

 had been cropped very heavily before the orchard was planted. 

 The trees are York Imperial, now 25 years old. They had 

 borne some fairly good crops before the experiment was 

 started, but they were no longer bearing well except on occa- 

 sional trees, and their annual twig growth was very small, — 

 averaging scarcely half an inch. This rate of growth has also 

 been greatly increased by fertilization. 



This experiment involves the same treatments as those in the 

 Johnston orchard and four others besides, — those in plats 6, 9, 

 II and 12. It also was started a year earlier, in 1907, and the 

 results of that season are excluded in the present table for 

 reasons stated above. The results for the past six years are 

 given in Table III. 



TABLE III.— INFLUENCE OF FERTILIZERS ON YIELD. (BROWN ORCHARD.) 

 Yields in pounds per plot, 1908-1913. 



> 



d 

 a ^ s 



o 



S 



Treatment. 



1 



2 



3 



4 



5 



6 



7 



8 



9 



10 



11 



12 



13 



14 



16 



16 



Check 



Nitrogen and phosphate .... 



Nitrogen and potash. 



Check , 



Phosphate and muriate .... 

 Phosphate and Sulphate. . . 



Check I 254 



Nitrogen, phosphate and potash] 1219 

 Nitrogen 



Check. 



Acid Phosphate. 



Raw Phosphate. 



Check 



Manure 



Lime 



Check 



289.3 

 198.9 



70.4 

 6.4 



206.1 

 120.3 



17.1 

 23.3 



219.4 

 12.0 



In general, we have the same types of results here as in the 

 preceding experiment, — large gains from nitrogen, phosphates 

 and manures, with relatively small effects from potash, and 



* In plats 2 and 3, the average gains over the "normal production" are given, on ac- 

 count of the unusual conditions near plat 1. Their annual yields were 4977 and 3483 

 bushels per acre respectively. The average check, omitting No. 1, has yielded 4816 

 pounds per plot or 112.4 bushels per acre annually. 



Yields per acre in 1912. Plots 1 and 4 equal 73.2 bushels. Plot 2, picked, 1086.7 

 bushels. Total, 1397.9 bushels. Plot 3, picked, 925 bushels, total, 1037 bushels. 48 

 trees per acre and 50 lbs. to bushel are used. The Baldwins have produced less than 2-7 

 of the totals in this experiment, hence each plot is considered as slightly less than 7 trees 

 or one-seventh of an acre. 



