igo6.] Inoculation of Leguminous Plants. 651 



Crop. 



IV. — Red Clover (German culture) first 



cutting — 



(b) Poor Soil— Not treated 



Treated .. 



(c) Good Soil— Not treated 



Treated ... 



V. — Melilotus (American culture) — 



(b) Poor Soil— 'Not treated 



Treated ... 



(c) Good Sou — Not treated 



Treated ... 



Dr. Voelcker observes that the Melilotus was the one case in 

 which an advantage was distinctly seen as the result of treat- 

 ment. 



III.— Crops Grown in the Open Ground. 



These were grown either (a) in small field or garden plots, or 

 (b) in accordance with actual agricultural practice. It is to these 

 experiments mainly that one must look for an indication of the 

 practical value of these inoculating preparations to farmers in 

 this country. Reports have been sent in from thirteen centres, 

 on experiments conducted on some forty-five farms in different 

 parts of England, Scotland, and Wales. 



The results are as follows : — 



Aberdeen. — (a) Garden plots 6 ft. x lift. 



Soil fairly fertile loam in good condition ; turnips and oats 

 were grown in two previous years. No manure was given to 

 plots. Moore's culture was used. 



The yield of Alsike and red clover indicated failure of inocu- 

 lation on these crops. The effect of inoculation on beans, peas, 

 and lucerne was distinct and quite appreciable to the casual 

 observer. The difference is indicated by the weights of green 

 produce : — 



Beans inoculated ... ... ... ... ... ... 130 lb. 



,, uninoculated... ... ... ... ... ... 122 ,, 



Peas inoculated ... ... ... ... ... ... 57 ,, 



uninoculated ... ... ... ... ... ... 52 ,, 



Lucerne inoculated... ... ... ... ... ... 7i >> 



uninoculated ... ... ... ... ... 5f >> 



The difference in weight is less than might reasonably have 

 been expected from the appearance of the crops. 



(b) Field tests. — Twelve farmers on whose land clover some- 

 times failed to grow, or never grew freely, were presented with 



Weight of 

 green crop, 

 grams. 



64-85 

 53-28 

 84-06 

 83-13 



17-18 

 21-08 



25-90 

 30-37 



Percentage of 

 untreated. 



100 

 82 



100 

 98 



100 

 123 

 100 

 117 



