MANURES AND FERTILIZERS. 109 



growing crop. Fortunately for the reputation of the 

 crop, the market was then satisfied with a grade of leaf 

 entirely different from that now demanded. The ques- 

 tion of quality was, of course, important, but the class 

 of goods demanded was not so fine and delicate as is 

 now imperative, and what was a fine leaf then could not 

 now be profitably raised. 



Now we find that the soil must be made rich in all 

 elements demanded by the plant, and these elements 

 should be in such a thoroughly soluble and available con- 

 dition that the plants can assimilate them without hin- 

 drance. The plant is really "forced," just as market 



FIG. 12. BRUSH ARRANGED FOR BURNING WHEN PLA&T BED IS TO BE 



MADE. (Tennessee, Kentucky.) 



garden crops are forced, by promoting a luxuriant growth 

 through the superabundance of fertility, kept in a state 

 of constant availability by thorough cultivation. Tillage 

 and fertilizing go hand in hand in the production of 

 the crop. 



What not to Use. It is important to avoid applying 

 to the soil substances which might injure any desirable 

 quality in the leaf. For instance, it is going too far to 

 assert that the use of chlorides invariably produces to- 

 bacco of inferior quality, for occasional experiments 

 demonstrate the contrary, but growers will do well to 



