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CAMPBELL'S SOIL CULTIKK MANUAL 



In seasons of normal rainfall with the usual dry period 

 in May or June, the condition as shown would bring a small 

 yield of wheat. The action of a press wheel is somewhat 

 coarse and loose, or we might say the soil as it is found 

 by ordinary fitting is not what most farmers imagine. The 

 shape of the packed portion is much the shape of an egg 

 little end down, as shown in the cut. The result is a rapid 



Cut No. 17. Effect of Seeding with Three Kinds of Drills. 



early growth of roots and a liberal stooling; the roots and 

 rootlets, however, are mainly confined within the finer and 

 more packed portion as shown in cut. This fact we as- 

 certained by cutting a deep trench across two rows thus 

 planted and with a fine stream from the nozzle of a small 

 hand-pump, such as is usually used to wash buggies with, 

 we brought out the conditions shown. Now the trouble 

 usually is soon apparent when a dry period comes on after 

 the early rank growth when all the plants and all the stools 

 are obliged to depend mainly on this narrow packed strip, 



