MANURES. 



15 



of the locked-up stores of plant food are made available. The 

 same may be said of unleached ashes, though it contains much 

 more valuable fertilizing material than lime. Common salt also 

 acts to some extent indirectly as a fertilizer, while it is of very 

 little value as a plant food. 



COMPOSITION OF VEGETABLES, MANURES AND FERTILIZ- 

 ERS. 



In the following tables is shown the amount of fertilizing 

 elements required by vegetables and the amount of these ma- 

 terials which is contained in the various farm manures and com- 

 mercial fertilizers. These figures are from eastern United States 

 and European sources. The climatic conditions in these places 

 are quite different from those in many sections of the Western 

 states where the actual amount of ash ingredients in plants, 

 especially in dry years, may greatly exceed the amounts here 

 given. The relation of these tables to one another is worthy of 

 special study, since they show what the plants need and what 

 the fertilizing materials supply. 



TABLE I.— Composition of Vegetables. t 



Artichokes 



Asparagus stems 



Beans, Lima , 



Beans, string ., 



Beets, red 



Cabbages , 



Carrots 



Cauliflower 



Chorogi, tubers 



Chorogi, whole plant .., 



Cucumbers 



Eggplant , 



Horse-radish, root , 



Kohl-rabi 



Lettuce, leaves 



Lettuce, stems 



Lettuce, whole plant 



Muskmelons, interior juice.. 



Muskmelons, pulp 



Muskmelons, pulp juice 



Muskmelons, rind 



Mustard, white 



Okra 



Onions 



Parsnips 



Peas, Canada field 



Peas, garden 



Peas, green 



Water, 



81. 

 93. 



50 

 96 

 46 

 87.23 

 88,47 

 90.52 

 88.59 

 90.82 

 78.90 

 78.33 

 95.99 

 92.93 

 76.68 

 91.08 

 86.28 

 88.46 

 93.68 

 92.61 

 76.44 

 90.53 

 91.15 

 84.19 

 87.41 

 87.55 

 80.34 

 12.48 

 12.62 

 79.93 



Ash. 



Per ct. 

 0.99 

 0.67 

 1.69 

 0.76 

 1.04 

 1.40 

 1.02 

 0.81 

 1.09 

 1.02 

 0.46 

 0.50 

 1.87 

 1.27 



1:71 



1.18 

 1.61 

 1.01 

 1.49 

 0.56 

 0.68 

 2.25 

 0.74 

 0.57 

 1.03 

 2.36 

 3.11 

 0.78 



Nitro- 

 gen. 



Per ct. 

 0.36 

 0.29 



0.24 

 0.38 

 0.16 

 0.13 

 1.92 



0.16 



0.36 

 0.48 



0.23 



0.14 

 0.22 



3.58 



Phos- 

 phoric 

 acid. 



Per ct. 

 0.17 

 0.08 



*0.09 

 *0.11 

 0.09 

 0.16 

 0.19 



0.12 



0.07 

 0.27 



*0.07 



0.04 

 0.19 



0.84 



Potash 



Perct. 

 0.48 

 0.29 



*0.44 

 *0.43 

 0.51 

 0.36 

 0.64 



0.24 



1.16 

 0.43 



♦0.37 



0.10 

 0.62 



1.01 



