4 N. H. AGR. EXPEEiMENT STATION [Bulletin 235 



so great that a considerable increase in their use seems 

 inevitable. It has been mentioned as an objection to the 

 use of concentrated fertilizers that they may cause injury 

 to the plant. Experiments have been conducted in sev- 

 eral experiment stations with concentrated materials 

 both home-mixed and commercially mixed, the results of 

 which show that with proper care in their application 

 they may be used with safety. Consumers are familiar 

 with the use of such concentrated materials as nitrate of 

 soda and have learned how to prevent the burning effects 

 which result from their improper application. There 

 appears, therefore, no reason why concentrated fertilizers 

 may not be profitably and safely used if careful consider- 

 ation is given to the character of the crop, type of soil, 

 kind of fertilizer and method of application. 



NEW ENGLAND STANDARD NINE. 



Late in December, 1922, the directors of the New Eng- 

 land Agricultural Experiment Stations and the agrono- 

 mists of the New England State Colleges met in confer- 

 ence with representatives of the fertilizer manufacturers 

 selling in New England and adopted nine grades of fer- 

 tilizer which in their opinion meet all the fertilizer 

 requirements of New England crops and soils. 



The formulas and recommended uses of these nine 

 grades, known as the New England Standard Nine, are as 

 follows : 



1. 0-12-6 — For late fall seeding of grass and grain and 



for top-dressing clover and alfalfa. 



2. 2-12-4 — For late summer and early fall seeding of 



grass or grain ; also for covn Avith the 

 addition of manure. 



3. 3-10-4 — For corn, small grains, millet, tomatoes and 



cabbage on the heavier soils. 



4. 3-10-6 — For corn, beans and peas on the lighter 



soils. 



