XVlil OUTLINE AND TABLE OF CONTENTS 



PAGE 



2. Fertilizer practice (209). 



(a) Brands of fertilizers (210). 



(b) Fertilizer inspection (211). 



(c) Trade values of fertilizers (212). 



(d) Computation of the commercial value of a 



fertilizer (213). 



(e) Mixing fertilizers on the farm (214). 

 (/) Methods of applying fertilizers (215). 



3. Soil amendments (216). 



(a) Salts of calcium (217). 



(1) Effect on tilth (218). 



(2) Liberation of plant-food materials (219). 



(3) Effect on toxic substances and plant 



diseases (220).' 



(4) Forms of calcium (221). 

 (a') Caustic lime (222). 



(V) Carbonate of lime (223). 



(c') Sulfate of lime (224). 

 (6) Common salt (225). 

 (c) Muck (226). 



4. Factors affecting the efficiency of fertilizers (227). 



(a) Soil-moisture content (228). 

 (6) Soil-acidity (229). 



(c) Organic matter (230). 



(d) Structure or tilth of the soil (231). 



(e) Cumulative need for fertilizer (232). 



5. Farm manures (233). 



(a) Solid excreta (234). 



(b) Urine (235). 



(c) Litter (236). 



(d) Manures produced by different animals (237). 



(1) Horse manure (238). 



(2) Cow manure (239). 



(3) Swine manure (240). 



(4) Sheep manure (241). 



(5) Relative values of animal manures (242). 



(6) Poultry manure (243). 



