244 



FUNDAMENTALS OF AGRICULTURE. 



that persist and develop in moist weedy places; care- 

 ful selection of varieties to get those that are most re- 

 sistant to disease and otherwise satisfactory; careful 



TOBACCO PLANTS FROM DISEASED AND RESISTANT STRAINS OF SEED. 



attention to seed and nursery stock to be sure that cer- 

 tain diseases are not transmitted through them; pre- 

 vention of insect injury and other wounds which open a 

 way for infection by fungi. 



