70 



MAIXE AGRICULTURAL EXPERIMENT STATION. 



DIAGRAM SHOWING RELATIVE WEIGHTS OF DRY MATTER OF PLANTS 

 GROWN WITH PHOSPHORIC ACID FROM DIFFERENT SOURCES. 



Crops. 



Phosphate. 



Comparative Scale. 



Weight. 



f Acid rock. 



J Floats. 



I? 



Horse 



beans. 



Clover. 



Alfalfa. 



Turnips. 



Redonda. 

 No phosphate. 



Acid rock. | 



Floats. 



Redonda. 



No phosphate. 



r Acid rock. 

 J Floats. 

 ] Redonda. 

 (, No phosphate. 



Acid rock. i 



Floats. 



Redonda. 



No phosphate. 



r Acid rock. |- 

 J Floats. !^ 



I Redonda. 

 (. No phosphate. ■ 



Ruta- 



bagas. 



Cauli- 

 flo"wer 



Kohl- 

 rabi. 



Barlev. 



Com. 



Oats. 



Acid rock. 



Floats. 



Redonda. 



I 



I ftedoniia. 



(_ No phosphate. > 



f Acid rock. 

 J Floats. 

 , ] Redonda. 

 (. No phosphate. 



r -Acid rock. 

 I Floats. 

 1 Redonda. 

 L No phosphate. 



Acid rock. 



Floats. 



Redonda. 



No phosphate. 



Acid rock. 



Floats. 



Redonda. 



No phosphate. 



Acid rock. 

 Floats. 

 Redonda. 

 No phosphate. 



C A cid rock, 

 iimoiny. -- Re(^ionda. 



t No phosphate. 



Grams. 

 167 

 122 



»7 



269 

 128 

 118 



217 

 169 

 126 

 83 



107 

 97 

 87 

 90 



202 

 187 

 119 



152 

 145 

 123 



U 



176 

 167 

 107 

 62 



232 



209 

 172 

 130 



.S3S 

 171 

 166 

 146 



218 



85 

 98 

 81 



662 

 307 

 380 

 319 



410 

 329 

 346 

 353 



*In the case of the oats and timothy the scale has been reduced one-half to 

 accommodate the lines to the space allowed. The relative length of the lines for 

 the sam^ plant has been maintained. 



