136 HATCH EXPERIMENT STATION. [Jan. 



The rosults of the stated three years were summed up as 

 follows in my annual report for 1894, to which I have to 

 refer for details. From our observations extending over 

 three years we arrived at the following conclusions : — 



Potash in the form of sulphate has given the most satis- 

 factory results, as compared with muriate, in the case of 

 potatoes, tomatoes, lettuce and spinach, and with onions 

 during the presort season. 



Nitrogen in the form of nitrate of soda has given us, with- 

 out regard to the potash source, the most satisfactory returns 

 in case of spinach, lettuce, potatoes and tomatoes, and onions 

 during the present season. 



1895. — During the last season my observations have 

 been confined to the cultivation of 



Onions (Danvers Yellow). 

 Sweet Corn (Crosby Early). 

 Beans (Bush Horticultural). 

 Tomatoes (Essex Hybrid). 



The different plats were ploughed April 20, and the par- 

 ticular fertilizer applied broadcast April 25. The soil was 

 subsequently carefully prepared by harrowing, etc., for seed- 

 ing and planting. The tomato plants were raised under 

 glass and transplanted into the field when of a suitable size, 

 May 25. The remaining crops were seeded directly in the 

 field, — the onions May 1, the corn and the beans May 11. 



The former division of the field into six plats, each con- 

 taining the same crop for trial, — onions, beans, sweet corn 

 and tomatoes, — was continued ; each plat received the same 

 mixture of fertilizing ingredients, and in the same proportion, 

 as in the preceding years : — 



Pounds. 



Available phosphoric acid, 50 



Available nitrogen, ....,„,. 60 

 Available potassium oxide, 120 



As each of the six plats measured 89^- by 62 feet, covering 

 thus an area of 5,549 square feet, or about 100 square feet 

 more than one-eighth of one acre, the following amount of 

 each of the above-stated essential constituents of plant food 

 was added to each of them : — 



