FOOD FOR PLANTS 



61 



Crops in Pounds per Acre. 



TABLE NO. I 



Kate of Rate of 



Application Crops Yield Crop Yields 



Plot Nos. per Acre per Plot per Acre 



1. Nitrate of Soda 1 



and [ 400 4,180 41,800 



Acid Phosphate J 



2. Nitrate alone 400 4,100 41,000 



3. Acid Phosphate alone 400 2,840 28,400 



4. Check — nothing 2,820 28,200 



5. NaNOa and P.O. 200 each 



June 5, 



1919; 



200 each 



June 24, 



1919.. 1,780 35,600 



6. NaNO. and P.O. 200 each 



June 5, 



1919; 

 400 each 

 June 24, 



1919.. 2,040 40,800 



Pounds per Acre of Protein and Minerals Removed 

 by Crop. 



TABLE NO. II 



Phosphoric 

 Plot Nos. Acid Potash Protein Nitrogen 



1. Nitrate of Soda 1 



and [ 47.23 95.30 689.7 110.3 



Acid Phosphate J 



2. Nitrate alone 38.06 109.06 471.5 75.4 



3. Acid Phosphate alone 56.99 77.25 289.4 46.3 



4. Check — nothing 31.58 62.89 377.3 61.1 



5. NaNOs and P.O= 47.70 75.83 585.2 93.6 



6. NaNOs and P.O:, 56.71 102.82 739.7 118.3 



Pounds per Acre of Minerals Removed by Crop. 



TABLE NO. Ill 

 Plot Nos. Ash Iiime 



1. Nitrate of Soda 1 



and 456.9 31.77 



Acid Phosphate J 



2. Nitrate alone 468.6 38.54 



3. Acid Phosphate alone 342.2 28.12 



4. Check — nothing 293.0 27.35 



5. NaNO. and P.O., 408.0 45.57 



6. NaNOa and P.O. 472.1 34.68 



