EFFECTS OF FERTILIZERS OX SORGHOI. 



175 





Cost of fertilizers per acre . -. 

 Poan<l« of sorsham peracre 

 Pounds of stripped and topped 



eaiie per acre 



Percent of i nice extraf-te<1 from 



stripped and toppetl cane 

 Pounds of juice extracted per 



acre 



Per cent of su?ar in juice. 



Pounds of exiractable sugar per 



acre . . 



Pounds of sugar extracted per 



ton of cane 



Pounds of clean seed per acre 



.•JoO 



2| 690 



51 6,10P 

 9 73 



591 



1S4 

 1,235 



cJ 



]2,.3tJ6 



9,501 

 683 



6.491 

 9.73 



632 



133 



las-j- 



J20 10 

 13,260 



9,812 



689 



6.760 

 944 



638 



1-30 

 1.34^ 



$36 39 

 14,006 



10,913 

 67.8 



7.113 

 12 01 



S91 



168 

 1,278 



Professor Magnus Swenson, of the University of Wisconsin, at 

 Madis>a, gives the following as the result of his experiments with fer- 

 tilizers in 1882. 



One plot of one and a quarter acres, was used for experiments with fertilizera. 



Each kind of fertilizer was pot on a plot of cane of one-twentieth of an acre, 

 a;id these plots were separated from each other bj gnard rows, where no fer- 

 tilizer was used. Each lot was cut and brought to the mill separately, and a 

 sample from the defecated juice was taken for analysis. 



The following table g^ives the results: 



Fertilizers. 



Xitrosen 

 on plat. 



Cane 

 suirar. 



Glucose. 



j Strir>ped 



stalks. 



Xo. 1. 



No. 2. 



No. 3. 



No. 4. 



No. 5. 



No. 6. 



No. 7. 



No. 8. 



No. 



NO. 

 No. 

 No. 

 No. 

 No. 

 So. 

 No. 



No ^l;^nare 



2i?9 pounds barn-yard manare 



Nitrugen mixture -- 



Superphosphate ^lo pounds) 



Chloride of potassium (Tfi pounds) 



» Nitrate of sotlium .Tij p^mnds) > 



) Superphosphate ,15 pounds) i 



» Nitrate of sodiiim (T^^ p<iunds) \ 



I Chloride of potassium "(15 "Jk'unds) > 

 * Superphosphate (15 pounds) ) 



^Chloride of potassium (7>i poiinds)^ "" 



Barn-yard manure 



No manure 



Mixed minerals and nitrogen 



Mixed minerals and two-thirds nitrogen. 



Mise<i minerals and one-third nitrt^en 



Mixed minerals and one-sixth nitrogen.. 



Mixed minerals and one-twelfth uitrT<gen 



Mixed minerals and no nitrogen. 



Pound.'. 



1.2 



1.2 

 12 



1.2 

 .8 

 .4 



Per cent. 

 10 91 

 10 19 

 10.57 

 10 51 

 10% 



10 77 

 10 17 



10 83 



10 87 



11 63 

 11 34 

 10 92 

 10 41 



10 10 



11 59 

 10 47 



Per ernt. 



2m 



2.77 

 2.77 

 2 80 

 2 78 



2.56 



2 78 



28S 

 2S5 

 2 76 

 2 SO 

 2 94 

 2 S6 

 2 90 



Pounds. 

 82S 

 861 

 796 

 762 

 910 



776 

 856 



778 



578 

 616 

 472 

 578 

 548 

 560 

 618 

 590 



• The "nitrogen mixture" consisted of sodium nitrate, ammonium sulphate, and 

 dried blood in equal parts. 



