Fertilize Heavily. 89 



injury they work when they are allowed to 

 grow amid crops that are thin and poor. 

 When the soil sustains a vigorous growth, 

 the useful crops leave many forms af weeds 

 behind in the race, especially in the early 

 part of the season. Where the growth is 

 vigorous in the early stages of the crop, 

 the weeds have much less opportunity of 

 monopolizing the growing area. Growing 

 good crops is synonymous with good farm- 

 ing; that Is, the raising of good crops is in 

 itself a great hindrance to the multiplica- 

 tion of weeds. This agrees with the well- 

 known fact that the spread of W'Ceds is usu- 

 ally much more rapid and complete in 

 impoverished farms than elsewhere, hence 

 those who desire clean farms will have done 

 much to secure the desired end when they 

 adopt such measures as will also maintain 

 them in a high state of fertility. Much 

 may be done in the w^ay of securing this 

 fertility by growling catch crops for feed- 

 ing off or plowing under after the earlier 

 crops of the season have been removed. In 

 all localities wdiere the climate is not too 

 severe, peas, buckwheat, and rape may all 

 be grown as catch crops. The cultivation 

 requisite for preparing the ground for these 



