Principles of Agronomy 



BY J. S. HARRIS AND GEORGE STEWART 



Utah Agricultural College 

 Cloth, I2tno, illustrated, 430 pages, List price, $1.40 



The "Principles of Agronomy" deals with the practices 

 that underlie success in crop production and will be wel- 

 comed by those schools that emphasize, in the agriculture 

 course, the field crop studies. The student is introduced 

 in this book to the four elements that will affect his suc- 

 cess in raising crops for market. First, the nature of the 

 plant and its activities ; then, the composition of soils ; 

 next, the characteristics of the principal field crops and 

 details regarding their cultivation and care; finally, the 

 principles of farm management. When one has surveyed 

 the subject from these four points of view he has a clear 

 idea of what is involved in the practical problem of crop 

 production. He sees that results are determined by the 

 character of the plant, by the soil, and by the manage- 

 ment as well as by the crops themselves. 



The book will appeal to the practical man whether he 

 be student or farmer. It deals with conditions as they 

 are, and discusses practical problems that involve both 

 principles and applications : 



What shading- does to plants; How to modify soils ; 

 When to irrigate ; How to prevent potato diseases ; etc. 



The book is comprehensive and well organized. It is, 

 moreover, well written and attractively illustrated. It is a 

 good story well told. 



Lists of supplementary readings, provided at the ends 

 of chapters, permit of extension of the course into any 

 field of special local interest. The appendix contains ref- 

 erence material, tables, rules, glossary, etc. 



THE MACMILLAN COMPANY 



Publishers 64-66 Fifth Avenue New Tork 



