GARDEN YARD ba 
Some crops tend to correct the faults of others. 
It has been proved that the continuous growing 
of one crop injures the soil in some respect, and 
the crop falls off both in quantity and quality. 
Rotation tends to overcome this difficulty. 
Then, too, this rotation works out and evens 
up the inequalities of the soil, partly through the 
different treatment required by the different 
crops. 
Different plants draw different portions of 
food from the soil and at different times. By 
rotation these heavy drafts on the plant food 
do not come at the same times, and the seasons 
get a chance to even up the inequalities. 
Different plant food gets mixed into the soil, 
so that the roots can feed on it, by the decay of 
the parts left in the ground or which are plowed 
under. But the greatest benefit comes from the 
nitrogen compounds through growing plants, 
such as cowpeas, crimson clover, etc.; these 
“Jeguminous”’ plants have little knots or tubers 
on their roots with the mysterious power of 
gathering the free nitrogen out of the soil or 
air, and turning it back again to the soil in 
condition to be used by other plants. Now 
nitrogen is the hardest to keep and the most 
expensive of all the plant foods that the farmer 
has to buy, and to get this nitrogen is sometimes 
