CULTURE OF THE SUGAR BEET. 



101 



advantage of moderate applications of stable manures, and the choice 

 that should be made in the supplementary compounds that should be 

 applied: 



Influence of manures on yield in weight and richness in sugar.* 



Xo. of 



tho 

 plots. 



Manure distributed per acre. 



Sugar pro- 

 diiced per 



acre. 



9 tons stable manure 



18 tons stable manure 



36 tons stable manure 



36 tons stable manure and 890.7 pounds superphosphate of 

 lime 



"Without manure 



356 pounds nitrate of soda, distributed in one sowing 



356 pounds nitrate of soda, distributed in four sowings 



356 pounds nitrate of soda and 356 pounds superphosphate, 

 in one sowing 



356 pounds nitrate of soda and 356 pounds superphosphate, 

 in four sowings 



1,068 pounds nitrate of soda, distributed in four sowings 



356 pounds sulphate of ammonia, distributed in one sowing. . 



356 pound ssulphate of ammonia, distributed in four sowings. 



356 pounds sulphate of ammonia and 356 pounds superphos- 

 phate, in one sowing 



350 pounds sulphate of ammonia and 356 pounds superphos- 

 phate, in four sowings 



356 pounds superphosphate withhout nitrogen or manure 



1, 068 pounds sulphate of ammonia, in four sowings 



Pounds. 

 2, 351. 80 

 2, 228. 60 



1, 896. 59 



2, 137. 78 



2, 257. 04 



2, 184. 01 

 2, S.n. 79 



2, 415. 40 



2, 5GS. 24 

 2. 367. 4'.> 

 2, 336. 25 

 1, 002. 45 



1, 722. 15 



1, 827. 17 

 1, 990. 93 

 1, 693. 57 



* Journal des Fabricants de Sucre, Xovember 13, 1878. 



Joulie * also found, in his experiments with stable manure and the dif- 

 ferent fertilizing compounds made according to his formula, that the 

 largest yield was obtained "with the complete manure containing all the 

 leading elements. The next best yield was secured "with the complete 

 manure without potash ; the next "with nitrate of soda alone. The yields 

 •with the others decreased regularly in the order in which they are named. 

 Without phosphate and without lime ; with sulphate of ammonia ; with 

 stable manure ; with nothing ; with guano. From his experiments he 

 concludes as follows : 



1. The manure especially suited to the beet and which establishes the best condi- 

 tions, as well for the yield per acre as lor quality, is the complete manure B, of which 

 the following is the composition : 



assimilable 

 insoluble 



Per cent. 

 6.500 



6.500 



8.000 



Soda 9.000 



Lime 14.800 



Water, sulphuric acid, silica, and other accessory elements 55. 200 



Nitric acid 



Phosphoric acid, \ ' 

 I i 

 Potash 



Total 100.000 



The nitrogen corresponds to ammonia 8. 000 



The phosphoric acid corresponds to tricalcic phosphate 14. 200 



Guide pour Vachat et VEm-ploi des Engrais Chimiques, pp. 250 and 251. 



