00 CAMPBELL'S SOIL CULTURE MANUAL 



by our method and the heavy rains of 1903 stored in the 

 soil and reserved for the long dry spring of 1904. Do 

 not confound summer culture with summer fallowing. 

 They are different. 



Summer culture previous to seeding to alfalfa will in- 

 sure a positive and even catch and a fair crop the first 

 season. 



Summer culture for the storing of the rain waters in 

 the soil, although comparatively new as outlined, is a most 

 important adjunct in farming in the West. 



Begin your summer culture as early in the spring as 

 the conditions will let you on the ground with your disk 

 harrow. Don't let the weeds grow, thinking they are 

 valuable as a fertilizer to turn under. The moisture they 

 take from the ground is worth far more to you in growing 

 the next crop. 



The purposes of summer culture are many, but the 

 most prominent of all that it never fails to bring about to 

 a most marvelous degree is to change a field of very normal 

 crop growing ability to one of almost incomprehensible 

 producing powers in just ordinary seasons. So marked 

 are the results that all sorts of doubting Thomases appear 

 and present many theories, but we urge the student to 

 throw away all skeptical influences. Study well the prin- 

 ciples and apply them with as much correctness as pos- 

 sible and draw your own conclusion as to certainty of 

 results and causes of results. 



