490 Report of the Horticulturist of the 



fertilizers instead of stable manure. The difference in the me- 

 chanical conditions of these soils is the apparent reason for the 

 marked difference in the prevalence of tip-burn, the mechanical 

 condition of the clay loam being much improved by the addition 

 of the manure, while on the contrary, the liberal use of manure 

 with the very sandy soil made a soil mixture which was so loose 

 in texture that it did not produce good lettuce. 



Stable manure with commercial fertilizers. — The results which 

 were obtained when commercial fertilizers were used instead of 

 stable manure, having been set forth, the use of commercial ferti- 

 lizers in addition to stable manure will now be considered. Soils 

 9, 10, 11, 15, 16 and 17 each contained 33 1-3 per cent of stable 

 manure. In addition to the manure, Soils 9, 10 and 11 received 

 phosphoric acid, 600 pounds per acre, sulphate of potash, 400 

 pounds per acre, and nitrate of soda, 366 pounds per acre. The 

 average of the records for each of these soils are shown in the 

 following table: 



Table X.— Stable Manure with Commercial Fertilizers. 



Per cent of ingredients. ~< 



No. g -3 2 



of soil. § a . g 8 



o 



4> © 



& r j § a 

 « a 



9 « 9 



c8 rZ e3 SO 



9 66} 88} * 



15 66} 33} f 



10 66} 33} * 



16 66} 33} f 



11 16} 50 33} * 



17 16} 50 33} f. 



Soil 9 received commercial fertilizers while Soil 15 did not; 

 otherwise these two soils were alike. The only difference which 



* These soils received acid phosphate, 600 lbs. per acre, sulphate potash, 

 400 lbs. per acre, and nitrate of soda 366 lbs. per acre. 

 t No commercial fertilizers were used. 



