90 



TOBACCO LEAF. 



son used for comparative purpose a crop of rye yielding 

 32 bushels of grain and 3800 pounds of straw, corn 

 yielding 75 bushels of grain and 8000 pounds of stalks 

 and leaves, 2f tons of hay, and 300 bushels of potatoes. 

 Davidson compared the yield of 1000 pounds of Virginia 

 leaf per acre (and 353 pounds of stalks) with 30 bushels 

 of corn and stover, or oats, 30 bushels and straw : 



Table II. PLANT FOOD REMOVED FROM AN ACRE OF LAND BY 

 TOBACCO AND OTHER CROPS. 



Under a rational system of husbandry, cornstalks, 

 oat straw, wheat straw and hay are fed to stock, and 

 their ingredients return to the soil in manure, just as 

 tobacco stalks return to the land. Hence, we should 

 only compare plant food removed in the grain alone 

 with that taken off in the tobacco leaf alone. Eye 

 straw, however, is usually sold, also potatoes, so that the 

 total quantity these crops take from the soil may be 

 compared with the plant food in tobacco leaf. 



Table III. POUNDS OF PLANT FOOD TAKEN FROM THE SOIL BY AV- 

 ERAGE YIELDS PER ACRE OF SO MUCH OF TOBACCO AND OTHER 

 CROPS AS IS NOT RETURNED TO THE LAND. 



