CONTENTS XV 



CHAPTER XI 



SYSTEMS OF MANURING CROPS 



High and Low Farming — Fertilising Constituents removed P'^o" 

 in Meat and Corn — Losses of Nitrogen increased when 

 Land is in high Condition — Manures for Wheat — 

 Barley: Importance of Quality — Oats — Root Crops: 

 Swedes, Mangolds, Potatoes — Importance of Farmyard 

 Manure for Root Crops — Leguminous Crops : Beans, 

 Clover, Lucerne, Sainfoin — Value of Potassic Fertilisers — 

 Grass Land — Effect of Manures in changing the Botanical 

 Character of the Herbage — Land laid up for Hay — 

 Manures for Poor Pastures — Hops — Fruit — Garden 

 Manures — Manures for Tropical and Semi-Tropical 

 Crops : Sugar Cane, Tobacco, Cotton, Tea . . 300 



CHAPTER Xn 



THE VALUATION AND PURCHASE OF 

 FERTILISERS 



Valuation on the Unit System — The current Market Price 

 of the Unit of Nitrogen — Phosphate of Lime and Potash 

 — Variations in Unit Values due to Market Fluctuations 

 — Valuation of Fertilisers before Purchase — The 

 Fertilisers and Feeding Stuffs Act ; Obligations of the 

 Vendor — Sampling Consignments of Fertilisers — Mixed 

 V. Unmixed Fertilisers — Incompatibles — Residues of 

 Fertilisers after the Growth of one or more Crops — 

 Valuation of unexhausted Residues derived from the 

 Consumption of purchased Feeding Stuffs . . 340 



CHAPTER XHI 



THE CONDUCT OF EXPERIMENTS WITH 

 FERTILISERS 



Magnitude of Experimental Error mvolved in Field Experi- 

 ments — Choice of Land for Field Experiments — Size 

 and Shape of Plots — Machines for sowing Fertilisers — 

 Should Farmers conduct Experiments upon their own 

 Land? ....... 359 



Index . .078 



