338 Fertilizers 



The formula containing 



Nitrogen 3% 



Phosphoric acid 9% 



Potash 3% 



is also recommended, since an application of 700 pounds 

 per acre will furnish the amounts and proportions of the 

 elements indicated as the maximum by the Georgia sta- 

 tion. This formula is also well suited for corn, if intro- 

 duced into a rotation as previously suggested. 



TOBACCO. (See Fig. 32, Plate XVI.) 



Tobacco is another special crop grown only in cer- 

 tain localities, favored either by reason of climate or 

 character of soil, or both. It is, however, a very im- 

 portant crop in this country, and one which requires 

 very careful attention in reference to the amounts and 

 kinds of fertilizers applied, because the fertilization exer- 

 cises an influence upon both the yield and quality of the 

 crop. It is an exhaustive crop, drawing heavily upon 

 both nitrogen and potash. A crop yielding 1000 pounds 

 of leaf to the acre will contain, in round numbers, 67 

 pounds of nitrogen, 9 of phosphoric acid and 85 of potash : 

 amounts equivalent in nitrogen to over 400 pounds of 

 nitrate of soda, of phosphoric acid equivalent to 75 pounds 

 of acid phosphate, and of potash equivalent to 170 pounds 

 of muriate of potash. It is a fact, too, that tobacco of the 

 best quality, or that best suited for cigar wrappers, can 

 be grown to advantage only on light, sandy soils, those 

 not naturally well supplied with the fertilizing constit- 

 uents. Thus, if large crops are to be secured, the soil 

 must receive liberal supplies of food from artificial sources. 



