Contents ix 



PAGES 



Organic matter 63 



Soil moisture 64 



Soil alkali 66 



Acid soils " 68 



Plant-food in the soil 69 



Soil bacteria 70 



Selecting a sugar-beet soil 71 



CHAPTER VI 



MANURING AND ROTATIONS 73-91 



Plant-food requirements of beets 74 



Ways of maintaining soil fertility 75 



How to determine fertilizer needs 76 



Commercial fertilizers for beets 77 



Nitrogen, 78 



Phosphorus, 79 



Potassium, 80 



Indirect fertilizers 81 



Home-mixing of fertilizers 82 



Farm manure for sugar-beets 82 



Handling farm manure, 84 



Green-manures 85 



Rotations 86 



Reasons for crop rotations, 86 



Principles of good rotations, 88 



Rotations with sugar-beets, 88 



CHAPTER VII 



CONTRACTS FOR RAISING BEETS 92-102 



Advantages of contracting 92 



Items included in the contract .... 93 



