Nitrogen, and on the basis of yields secured the ma- 

 terials ranked as follows: Nitrate of Soda, dried blood, 

 sulphate of ammonia, and barnyard manure. Based 2 3 

 on the increase of all the crops since the beginning of 

 the experiments the relative rank was: Nitrate of 

 Soda 100, dried blood 68.72, sulphate of ammonia 

 60.78, barnyard manure 80.58. 



On the grass lands receiving different fertilizer 

 treatment in rotation the average yield of hay was at 

 the rate of 4,840 Ibs. per acre for all 3 systems of man- 

 uring. The average yield in this test from 1893 to 

 1905, inclusive, was 6,479 Ibs. An application of 

 Nitrate of Soda, after harvesting the first crop of grass, 

 gave but a relatively small increase in yield, but, in 

 one instance, where applied at the rate of 150 Ibs. per 

 acre an increase of nearly 1 ton of rowen, or consider- 

 ably more than sufficient to pay the cost of the fer- 

 tilizer, was obtained. The results in determining the 

 relative value for garden crops with fertilizers supply- 

 ing respectively Nitrogen and potash, when used with 

 manure, show that on the basis of total crops produced 

 the standing of the different Nitrogen fertilizers is, for 

 the early crops, Nitrate of Soda 100, dried blood 95.67, 

 sulphate of ammonia 63.08, and for late crops Nitrate 

 of Soda 100, dried blood 98.77, sulphate of ammonia 

 79.52. For 15 years the relative standing of the fer- 

 tilizers supplying potash is, for early crops, sulphate of 

 potash 100, muriate of potash 94.66, and for late crops, 

 sulphate of potash 97.09, and muriate of potash 100. 



From United States Experiment Station Record, 

 November, 1906. 



The results of plot experiments with wheat here 

 reported indicate that the Nitrate alone in 2 applica- 

 tions was more effective than a mixture of Nitrate of 

 Soda and sulphate of ammonia. 



