Preece ROPrS FOR 
PNERICRING. THE SOIL 
V ETCHES-CLOVERS-ALFALFA 
These are legumes for Fall planting. 
With them, as with other legumes, nitrogen- 
fixing bacteria, developing on the roots of 
the plants, form swellings or nodules in 
which the nitrogen taken from the air is 
converted into nitrates in a form suitable 
for plant food. These nitrates are not 
merely supplied to the treated crop itself, 
but also increase the supply of nitrates in 
the soil for other crops. 
This is the reason such crops “rest” and 
restore the land. 
The legume crops are the only ones 
which can add nitrates to the soil, but they 
do this only when supplied with the right 
bacteria. The bacteria are present in 
many soils, but seldom in sufficient quan- 
tity or in the right condition. The need 
is to supply strong, active bacteria of the 
right kind for the particular crop planted. 
FARMOGERM 
FARMOGERM is a pure culture of these 
nitrogen-fixing bacteria, carefully selected 
for the special crop to be treated, and 
“bred-up” in the laboratory to the highest 
