CONTENTS 



PART I. FARM CROPS 



Chapter 1. CROP IMPROVEMENT . 19 



Plant selection Kinds of variation Hybridization Choice of varieties. 



Corn. 



The ear-row method Ideals in selection of corn. 



Wheat, Oats and Barley. 



First year Second year Third year Fourth year Fifth and succeeding years 

 Crossing of varieties in small grain breeding. 



Potatoes. 



Production of seedlings Hill and tuber selection Opportunities in crop improve- 

 ment. 



Chapter 2. THE ROTATION OF CROPS 28 



Rotations defined Purpose of rotations Maintain good physical condition of 

 soil Conserve organic matter and nitrogen Provide for extermination of weeds 

 Lessen insect depredations Reduce plant diseases Improve environment of 

 crops Rotations insure returns Prevent reduced crop yields Rotations 

 systematize farming Rotations distribute labor Essentials of a good rotation 

 Sequence of crops Length of rotations What crops to grow When to apply 

 manure and fertilizers Some suggested rotations Methods of planning and 

 recording rotations. 



Chapter 3. CpRN (ZEA MAIZE) 39 



Classification of corn Varieties of corn The chief corn-growing states Soil 

 and climatic adapt at ion Crop rotation for corn Plowing for corn Manures 

 and fertilizers for corn Time and method of planting Rate of planting Depth 

 of planting Preparation of seed for planting Cultivation of corn Methods 

 of harvesting Storing corn Shrinkage of corn Market grades of corn 

 Composition and feeding value of corn. 



Corn Improvement. 



Securing seed Selecting seed Care of seed Germination test Germinating 

 box Improvement by selection and breeding. 



Chapter 4. WHEAT (WINTER AND SPRING) 59 



Wheat production in the United States Climatic and soil adaptation Rotations 

 Preparation of the seed-bed Fertilizers for wheat Time of seeding Rate 

 of seeding Grain drills Winter killing Wheat districts District No. 1 Dis- 

 trict No. 2 District No. 3 District No. 4 District No. 5 Wheat improvement 

 Harvesting Cost of producing wheat Enemies of wheat: Weeols Insects 

 Fungous diseases Treatment. 



Chapter 5. OATS, BARLEY AND RYE 72 



Oats. 



Soil and climatic adaptation Classes and varieties Seed oats and their prepara- 

 tion for seeding Preparation of the seed-bed Fertilizers and manures for oats 

 Time, rate and manner of seeding Oats as a nurse crop Harvesting, shock- 

 ing and threshing Storing and marketing Composition and feeding value 

 Value of oats for hay and soiling purposesOat straw and its utilization Cost of 

 producing oats Oat improvement. 



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