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Report of the Horticulturist of the 



Table VII. — Average Time of Growth, Weight per Head, etc., of Lettuce 

 Forced With and Without Commercial Fertilizers. 



(fall and winter, 1896-7, two crops.) 



Nitrate of soda with stable manure. — In the first test the growth 

 was somewhat more vigorous on Soil 14 which received the greater 

 amount of the nitrate than on either Soil 4 which received the 

 lesser amount or on Soil 13 which received none. Similar results 

 were obtained in the next test where Soil 14a gave slightly larger 

 and better lettuce than did either Soil 4a which received half as 

 much nitrate of soda or Soil 13a which received none. In neither 

 test did the use of nitrate of soda on the soils already well supplied 

 with the stable manure result in sufficient improvement of the 

 lettuce to encourage its use in this way. 



Acid phosphate and sulphate of potash with stable manure. — 

 The use of the acid phosphate at the rate of 600 pounds per acre 

 and sulphate of potash at the rate of 400 pounds per acre made 

 practically no difference with the lettuce in the first, test as may be 

 Been by comparing Soils 12 and 13. (See Table 7.) But with 

 the second test, the application of these fertilizers having been 

 repeated on Soil 13 at the same rate as before, the lettuce headed 



* The total amount including what was applied to this soil for the preceding 

 crop was 1,200 lbs. per acre. 



t The total amount including what was applied to this soil for the preceding 

 crop was 800 lbs. per acre. 



