42 



CONTROL SERIES No. 45 

 Series I. — Unwashed. i 



Source of 

 Nitrogen. 



Dried Blood Red 



Dried Blood Dark 



Foreign Nitrogenous 



Tankage 

 Hoof Meal 

 I*- 

 Peruvian Guano 



Milorganite 



Imported Process 



Tankage 

 Rehmsdorf Tankage . 



Process Tankage 



Darling's Tankage 



Hynite Tankage 



Agrinite . 



Nitrolene 



Whale Guano . 



Dry Ground Fish 



Cottonseed Meal 



Castor Pomace 



Packing House Tank- 

 age (9.5) 



Packing House Tank- 

 age (10) 



Omega Tankage 



Super Nite 

 Avail Tankage . 

 Nitrogenous Tankage 

 Uric Acid 

 Dried Blood Red' 

 Dried Blood Red^ 

 Dried Blood Red< 

 Dried Blood Red^ 

 Dried Blood Red' 



Yield 

 of Dry 

 Matter 

 per Pot 

 (Grams). 



61.89 

 60.97 

 62.55 

 / 65.80 

 \ 62.63 

 /48.46 

 \51.42 

 /44.37 

 \61.48 

 [62.80 

 \66.31 

 (48.15 

 \56.20 

 39.13 

 51.02 

 48.03 

 54.57 

 46.52 

 46.61 

 46.57 

 48.84 

 54.60 

 50.94 

 54.13 

 44.69 

 57.67 

 55.40 

 53.23 

 58.15 

 51.36 

 57.40 

 46.27 

 52.69 

 56.01 

 65.48 

 49.93 

 56.84 

 59.17 

 55.69 

 43.76 

 53.80 

 45.46 

 56.12 

 46.29 

 41.44 

 29.22 

 36.15 

 64.33 

 65.01 

 46.74 

 50.30 

 58.12 

 61.41 

 61.13 

 61.84 

 60.42 

 67.22 

 71.97 

 82.22 



Nitrogen 



Recovered 



per Pot 



(Grams). 



.52 



.45 



.51 



.48 



.50] 



.36\ 



.40 



.37 



.46 



.55 



.56/ 



.38 \ 



.46/ 



.341 



.44/ 



.38 \ 



.43/ 



.401 



.37/ 



.35 



.39 



.43 



.40 



.42 



.39 



.43 



.42 



.40 



.45 



.44 



.49 



.41 



.40 



.48 



.48 



.40 



.45 



.49 



.42 



.33 



.49 



.36\ 



.44/ 



.371 



.36/ 



.241 



.27 f 



.49/ 



.46 



.44 



.42 



.44 



.46 



.45 



.,50 



.50 



.49 



.58 



.71 



Average Relative 



Nitrogen 



Availability 



Dried Blood at 80; 



Basis: 



Dry 



Matter 



Yield. 



80.00 

 83.12 

 64.39 

 68.51 

 83.56 

 67.54 

 58.35 

 66.40 

 60.28 

 61.75 

 68.31 

 63.96 

 73.18 

 72.09 

 70.39 

 64.05 

 78.63 

 69.10 

 74.34 

 63.14 

 65.74 

 56.78 

 42.31 

 83.71 

 62.81 

 77.36 

 79.59 

 82.60 



Basis: 



Nitrogen 

 Recovered 



80.00 

 79.46 

 61.63 

 67.30 

 90.01 

 68.11 

 63.25 

 65.68 

 62.44 

 60.00 

 67.30 

 65.68 

 68.92 

 68.92 

 75.41 

 65.68 

 77.84 

 68.92 

 73.79 

 66.49 

 64.87 

 59.19 

 41.35 

 77.03 

 69.73 

 72.98 

 77.03 

 80.28 



Comparative 



Nitrogen Activity 



BY the Chemical 



Methods. 



Alkaline 

 Perman- 

 ganate 

 Method. 



79.34 

 83.92 

 63.68 

 81.54 

 64.79 

 63.76 

 62.11 

 70.85 

 60.75 

 71.90 

 69.35 

 70.98 

 86.03 

 75.59 

 73.82 

 62.13 

 64.48 

 76.89 

 78.30 

 60.68 

 82.56 

 60.78 

 45.19 

 23.76 

 79.34 

 79.34 

 79.34 

 79.34 



Neutral 

 Perman- 

 ganate 

 Method. 



97.88 

 94.12 

 85.58 

 94.52 

 99.50 

 80.93 

 95.58 

 89.55 

 84.05 

 91.61 

 87.42 

 96.81 

 94.19 

 96.77 

 96.77 

 93.72 

 92.28 

 92.47 

 99.78 

 88.65 

 97.98 

 86.98 

 98.01 

 99.60 

 97.88 

 97.88 

 97.88 

 97.88 



' By "unwashed" is meant the original ground material as furnished to the trade; "washed" 

 designates each product largely freed from water soluble nitrogen by successive washings with water. 

 ' Potash and phosphoric acid 11/2 times the usual quantity. 

 » Two grams of mineral rich in manganese carbonate. 

 * Four grams of mineral rich in manganese carbonate. 

 ' Six grams of mineral rich in manganese carbonate. 

 6 Double the amount of nitrogen used. 



