AGRICULTURE 



In harvesting crop : 



Reaper, mower, etc. 

 Methods: 



Flat, ridge, or hill 



Deep, shallow 

 Crop Rotation: 



Disadvantages of one-crop system 

 Advantages of proper rotation : 



Money crop and feed for live stock are raised 



Nitrogen-gathering crops prepare for nitrogen-destroying ones 



Drain on land is lessened by crops of different habits of growth 



Best use is made of manures and crop residues 



Weeds, insect pests, and fungous diseases are kept in check 



Land being occupied, plant food is not wasted 



Labor of men and teams is as evenly distributed as possible 

 Green Manures; Legumes and Soil Inoculation: 

 General benefits of catch, or cover, crops 

 Special advantages of legumes 

 Stable Manure: 

 Benefits : 



Supplies plant food 



Makes food in soil available 



Improves texture and moisture condition of soil 



Warms the soil 

 Value depends on 



Kind, age, and food of animals 



Methods of saving and applying 

 Sources of loss : 



Escape of liquid matter 



Leaching and washing of rains 



Escape of gases in fermentation, or * heating ' 

 Composting 



Commercial Fertilizers: 

 Rules for use : 



Depend mainly on tillage, crop rotation, and natural manures 



