168 STORRS AGRICULTURAL EXPERIMENT STATION. 
FIELD EXPERIMENTS WITH FERTILIZERS. 
BY W. O. ATWATER AND C. S. PHELPS. 

Owing in part to the fact that a large amount of other 
important work was pressing for publication, the field experi- 
ments of 1897 and 1898 have not yet been reported upon. In 
this article, therefore, an account is given of the field work of 
the Station for the past three* years. The experiments for the 
most part are in continuation of those carried out in preceding 
years and described in former reports of the Station. The 
field experiments have been mainly along the following lines: 
I. Special nitrogen experiments on corn, cow peas, and soy 
beans, for the purpose of studying the effects of nitrogen in 
different quantities and combinations in the fertilizers upon the 
yields and the composition of the crops. 
2. A rotation soil test on the Station land, for the purpose 
of studying the deficiencies of the soil and the needs of different 
crops for the different ingredients of fertilizers. 
3. Experiments with grasses and other forage crops, mainly 
for the purpose of comparing the feeding values of different 
fodder crops, and of studying the effects of the nitrogen in the 
fertilizers upon the proportion and amount of protein in the 
different crops. 
4. An experiment on soil improvement, for the purpose of 
comparing the relative economy of (1) stable manure, (23558, 
‘complete ’’ chemical fertilizer, and (3) green manures alone 
and in connection with mineral fertilizers for improving a soil 
apparently deficient in organic matter and in available nitrogen. 
The results of the special nitrogen experiments and of the 
soil tests, during the past three* years, are here given. ‘The 
results of the experiments with grasses and forage crops will 

* In the case of soy beans the experiments of 1896 are also included, 
