Contents 



Plants Vary in their Power of Acquiring Food 

 Characteristics of the cereal group Characteristics of 

 grasses and clovers Root crops Market-garden crops 



Fruit crops 199-204 



Systems of Fertilizing Suggested A system based 



upon the specific influence of a single element A sys- 

 tem based upon the necessity of an abundant supply of 

 the minerals A system based on the needs of the plants 

 for the different elements as shown by chemical analysis 



A system in which the fertilizer is applied to the 



" money crop" in the rotation An irrational system 204-210 

 Summary 210-211 



CHAPTER XII 

 FERTILIZERS FOR CEREALS AND GRASSES 



212-236 



Experiments to Determine the Lacking Element A 

 scheme for plot experiments Results that may be at- 

 tained . . . . 214-219 



The Importance of System in the Use of Fertilizers 

 Indian corn exhaustive of the fertility elements Oats 

 Barley Wheat Rye Clover Timothy A 

 gain of fertility by the rotation system The necessity 

 of adding more plant-food than is required by a definite 

 increase in crop The system should be modified if no 

 farm manures are used . . ' x . . . 219-231 

 Fertilizers for a Single Crop Grown Continuously . 231-233 

 Fertilizers for Meadows . . . . . . 234-235 



Will this System of Fertilizing Pay f. . . . 235-236 



CHAPTER XHI 

 FIELD TRUCK CROPS . . .... . . 237-259 



Fertilizers for Potatoes, Early Crop The time and 

 method of application The amount to be applied 



Form of the constituents 238-243 



Late Potatoes 243-244 



Sweet Potatoes Fertilizer constituents contained in 

 an average crop The application of the fertilizers . 244-248 



