All control officials charged with the enforcement of state laws regulating the sale 

 of commercial fertilizers and fertilizer materials are joined in the Association of Ameri- 

 can Fertilizer Control Officials. Research workers employed by State or Federal Agencies 

 engaged in the investigation of fertilizers are also members of this Association. The 

 object of this organization is to "promote uniform and effective legislation, definitions, 

 rulings, and enforcement of laws relating to the control of sale and distribution of 

 mixed fertilizers and fertilizer materials in the Continent of North America. At the 

 annual meetings of the Association, reports and recommendations of investigators con- 

 cerning definitions of fertilizer materials, use of new products, and problems concerning 

 regulation of the fertilizer trade are discussed in detail. Fertilizer manufacturers are 

 invited to participate in these discussions and through mutual co-operation, the fanner 

 is supplied with a product that can be relied upon to do the job expected in crop pro- 

 duction. The official publication of the Association may be obtained for a small fee 

 through the office of its secretary, B. D. Cloaninger, Clemson, South Carolina. This 

 booklet contains the official terms describing fertilizer materials, a proposed model state 

 fertilizer law, as well as the proceedings of the annual meeting. 



Whether or not a fertilizer contains the guaranteed amount of plant food can be 

 determined only by a chemical analysis. For this reason, it is considered necessary that 

 each brand of fertilizer offered for sale be officially sampled and analyzed each year. 

 When failure to meet the guarantee is proved by chemical analysis, the prosecution or 

 seizure provisions of the law may be invoked. The purchaser's refusal to buy a fer- 

 tilizer which does not conform to the law will not only assist in the enforcement of the 

 law, but will at the same time insure him the protection of the law. 



USE OF COMMERCIAL FERTILIZERS 



It is not within the scope of this department to make recommendations regarding 

 the use of commercial fertilizers. The Department of Agronomy and the Department 

 of Agricultural and Biological Chemistry of the University of New Hampshire Agricul- 

 tural Experiment Station test soils and conduct experimental work with various fer- 

 tilizer materials on hay and crop land. The Department of Horticulture investigates 

 fertilizer treatments for fruits and vegetables. Much of this work has been published, 

 and is available for free distribution to residents of New Hampshire. Address your 

 request to Mail Service, University of New Hampshire, Durham, New Hampshire. A 

 list of currently available publications on fertilization follows: 



Sta. Cir. 74 The Response of Clover and Total Forage to Top-Dressing Fertilizers 



Ext. Bull. 125 Growing Strawberries in New Hampshire 



Ext. Bull. 129 Forage Crop Production in New Hampshire 



Ext. Bull. 130 Care of the Established Lawn 



Ext. Bull. 324 Experiment with Potatoes 



Ext. Cir. 275 Culture of Low-Bush Blueberries 



Ext. Cir. 309 Growing Grapes in New Hampshire 



Ext. Cir. 310 Cane Fruit Culture 



Ext. Cir. 314 Tomatoes for New Hampshire 



Ext. Bull. 100 Growing Apples in New Hampshire 



Ext. Bull. 104 Growing Vegetables at Home 



Ext. Bull. 105 Asparagus in New Hampshire 



Ext. Bull. 116 Hotbeds and Coldframes 



Ext. Bull. 118 Glowing Potatoes in New Hampshire 



Sta. Bull. 424 Soils and Their Crop Adaptations in New Hampshire 



Folder New Hampshire Recommendations for Seed, Fertilizer and Lime 



While the word "fertilizer" does not appear in all of the above titles, none is in- 

 cluded which does not discuss the use of fertilizer. 



