170 



Fertilizers 



FORMULA No. 3 



POUNDS 



Ammo- Phos. p_j.- u Plant- 

 nia Acid Pota8h food 



Amount Material 



600 Ibs. tankage 



contains 30 90 



400 Ibs. kainit contains 50 



1000 Ibs. make- 

 weight contains 



Price 

 100 Lbs. 



120 costs $1.60 

 50 costs .65 



Cost 



$9.60 

 2.60 



30 90 50 170 and costs 



2000 Ibs. mixture 



contains 

 ^ 20 = 100 Ibs. 



mixture contains 1.5 4.5 2.5 8.5 and costs 

 Guaranteed 



composition 1.5 4.5 2.5 



$12.20 

 .61 



1200 Ibs. tankage 

 contains 



800 Ibs. kainit con- 

 tains 



FORMULA No. 4 



60 180 240 costs $1.60 = $19.20 

 100 100 costs .65 = 5.20 



2000 Ibs. mixture 



contains 60 180 100 340 and costs $24.40 



-^ 20 = 100 Ibs. 



mixture contains 3.0 9.0 5.0 17.0 and costs 1.22 



Guaranteed 



composition 3.0 9.0 5.0 



Formula No. 1 shows a high-grade product, both in 

 respect to quality of plant-food and concentration, while 

 No. 2 is high-grade only in respect to quality. In order 

 that the plant-food may be distributed throughout a ton 

 of material, it is necessary to add what is called "make- 

 weight," or a diluent. These usually consist of substances 

 that possess no direct fertilizing value. High-grade 

 mixtures cannot be made from low-grade materials, and 



