The Bulletin. 73 



A study of the experiments in tobacco growing, and a consideration 

 of the experiences of good tobacco growers, show that the amounts of 

 ammonia and potash in the average tobacco fertilizers, as stated above, 

 are not as large as are needed to give the best results. It would 

 appear that the largest amount of ammonia (10 per cent) in any of 

 these "specials" is greater than is required for bright tobacco, while 

 the maximum quantity of potash (5 per cent) in any of the 108 

 brands is less than is used by numbers of our best bright tobacco 

 growers, especially in the eastern part of the State. A considerable 

 number of these growers either mix their own tobacco fertilizers or 

 else have them put up according to formulas of their suggestion. Be- 

 low are given eight formulas for mixing fertilizers for tobacco. The 

 grade of those fertilizers will be higher and they will, of course, cost 

 more than the goods that are generally used in the State on tobacco, 

 but we feel confident that the increased yield will more than justify 

 the additional expense. In The Bulletin of the Department of 

 Agriculture, and in our correspondence with farmers, we have been 

 recommending formulas of about the composition of these for a num- 

 ber of years, and evidence is accumulating which shows that the char- 

 acter of tobacco fertilizers is undergoing quite a considerable change. 



No. 1— 



Acid phosphate, 14 per cent 750 pounds 



Cotton-seed meal 900 pounds 



Nitrate of soda 100 pounds 



Sulphate of potash, high grade 250 pounds 



2,000 pounds 



This mixture will contain : available phosphoric acid, 6.3 per cent ; 



potash, 6.9 per cent; nitrogen, 3.7 per cent (equal to ammonia, 4.5 



per cent). 



No. 2— 



Acid phosphate 1,065 pounds 



Dried blood, high grade 500 pounds 



Nitrate of soda 125 pounds 



Sulphate of potash, high grade 310 pounds 



2,000 pounds 



This mixture will contain : available phosphoric acid, 7.4 per cent ; 

 potash, 7.7 per cent; nitrogen, 4.3 per cent (equal to ammonia, 5.2 

 per cent). 



No. 3— 



Acid phosphate 875 pounds 



Fish scrap 725 pounds 



Nitrate of soda 100 pounds 



Sulphate of potash, high grade 300 pounds 



2,000 pounds 



This mixture will contain : available phosphoric acid, 7.2 per cent ; 

 potash, 7.5 per cent; nitrogen, 3.8 per cent (equal to ammonia, 4.6 

 per cent). 

 r> 



