The Corn Crops 



A discussion of maize, kafirs, and sorghums as grown in the 

 United States and Canada 



By E. G. MONTGOMERY 



Professor of Farm Crops in the New York State College of Agriculture at 

 Cornell University 



347 PP-! *^^v i2mo, $i.6o 

 Rural Text-Book Series 



The art of crop production is based on an application of 

 the sciences, (o) to producing a natural condition as per- 

 fectly adapted as possible to the needs of some particular 

 crop, or (b) the adaptation of the crop to certain natural 

 conditions. 



The study of crop production for any large region involves 

 a study of four general phases of the subject, as: i.. The 

 plant, its structure, physiology, and normal requirements. 

 2. A general survey of the region where it is proposed to 

 cultivate the plant, to note how the natural conditions found 

 correspond to the needs of the plant. 3. The adaptation 

 of the plant on the one hand to natural conditions and 

 adaptation of soil on the other, to the needs of the plant. 

 Maximum production is obtained when perfect adaptation is 

 secured. 4. Protection is necessary against other indige- 

 nous plants, fungous diseases, and inseets. 



The treatment of subjects in the text follows practically 

 the above plan. The plan also allows a wider use of the 

 text for different classes of students. The first two divi- 

 sions are technical and should only be studied by students 

 who have training in the sciences involved. With less ad- 

 vanced students the work may begin with Part III, Adapta- 

 tion. The third and fourth divisions deal with the more 

 practical phases of production and are written in a more 

 popular style, in order to make this double use of the book 

 possible. 



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