82 Progressive Agriculture 



there are many things yet to know and study 

 about timely tillage. 



WHY THIS REMARKABLE STOOLING AND GROWTH? 



Just a little discussion as to why this remarkable 

 growth and stooling may be obtained under such 

 soil, moisture and climatic conditions, as we have 

 endeavored to represent. We fully appreciate 

 that we are wading into a subject the facts of 

 which are not known to anyone, in fact the most 

 persistent investigator does not know. It is just 

 the same as in dealing with electricity, no one 

 knows what electricity really is, yet we do know 

 that by certain mechanical devices we can rely 

 upon specific results, in which we have every 

 reason to believe in fact, say we know, that so- 

 called electricity does this, or does that, and is a 

 controlling element. So too, in discussing the 

 growth of all plants we do not know just what 

 it is. Yet we have found that by certain mechan- 

 ical work under certain soil conditions combined 

 with a certain per cent of air and moisture and 

 with seemingly certain amount of heat, that we 

 do get certain specific marked growth in plants, 

 and for the want of better words to explain, after 

 studying the question carefully, we refer to bac- 

 terial and chemical action as the means of bring- 

 ing about or increasing the elements which pro- 

 mote that marked growth of the plant called 

 fertility or plant food. In going into the details 

 of the How and the Why, we have purposely 

 kept out of chemistry and dealt almost entirely 

 with the physical or mechanical condition of the 



