39 



General Conclusions. 



New Mineral Fertilizer. — The results obtained in this year's 

 test were quite satisfactory, the season being more normal than 

 during the previous year. They also furnish data regarding 

 the residual effect of the material which was one of the valuable 

 advantages claimed for the product. 



The results show that in case of corn and potatoes this fertilizer, 

 when used both with and without lime and in accordance with 

 directions furnished by the company, gave but little or no increase 

 over the no fertilizer plats. In case of oats a small increase is noticed 

 but the amount is in no way comparable with the increase due to 

 the complete fertilizer and manure. The results therefore do not 

 in any way bear out the extravagant claims of the company as to 

 yields or quality of crop. The material seems to have had no im- 

 portant residual effect as the yield on plats which received one ton 

 per acre for two years in succession showed but little increase in yield 

 over the no fertilizer plats. 



In general, it may be said that results in the field lead to the 

 same final conclusion as do the results in the laboratory, namely, 

 that the material has but little actual value as a source of plant food. 



The material does not seem to be effective in preventing injury 

 from insect pests. 



Stoneyyieal. — What has been said regarding the New Mineral 

 Fertilizer applies with equal force to the different grades of stone- 

 meal. Although Stonemeal following Stonemeal seems to have given 

 a small increase in yield of corn, yet when used with lime this is not 

 apparent, the yield being considerably less than on the no fertilizer 

 plat receiving the lime application. 



