504 



Bulletin 280. 



No. of Plot 



Amount and kind of fertilizers 

 per acre 



a. 

 b. 

 c, 



d. 



e., 



f. . 



g- 

 h. 

 i. . 



J.- 



k. 



1.. 



m. 



Nothing 



1 2 6§ lbs. nitrate of soda 



100 lbs. sulfate of ammonia 

 I i26f lbs. nitrate of soda 

 i 1,000 lbs. lime 



Nothing 

 j 100 lbs. sulfate of ammoniaj 

 ( 1,000 lbs. lime 

 I i26| lbs. nitrate of soda 

 ( 200 lbs. acid phosphate i6%-i7% 



10 tons barnyard manure 



Nothing 



!i26f nitrate of soda 

 200 lbs. acid phosphate 

 1,000 lbs. lime 

 j 1 2 6f lbs. nitrate of soda 

 70 lbs. muriate of potash 

 i2 6f lbs. nitrate of soda 

 200 lbs. acid phosphate 

 70 lbs. muriate potash 

 1,000 lbs lime 

 Nothing 



During the autumn of 1904 the check plots in this series were changed 

 from no manure or fertilizer to checks of ten tons of manure per acre. 

 The following on the effect of fertilizers used in this experiment was 

 recorded by Professor Fraser in 1905: 



1. In general, the stable manure has invigorated the grasses, but 

 for the most part the cows have not grazed on the plots treated with 

 manure so closely as they have on the plots where nitrate of soda and 

 lime were spread. 



2. The nitrate of soda produces about the same effect as the manure 

 on the grasses by way of invigorating them. 



3. The sulfate of ammonia has not invigorated the grasses to any 

 noticeable extent, although the plot is grazed a little more closely than 

 the manure plot. 



4. Nitrate of soda and lime have shown marked benefit to the grasses, 

 and in all instances the cattle have browsed these plots quite closely 

 except where red-top was the chief grass. It may be, however, that 

 the soil of this plot is a little better than the soil either north or south of it. 



5. The nitrate of soda and acid phosphate seem to have had about 

 the same effect as the nitrate of soda and lime, although it seems that 

 the soil is getting somewhat better. 



