194 



Formula* for tobacco. 





XT „ i n 



JNo. iy. 



XT oA 



No. 20. 





Founds. 



Pounds. 



©table manure ... ... 



QAA 





JFine horso or cow manure, rich mould, or similar material ... 





AAA 



Acid phosphate ... 



500 





Acid phosphate or dissolved bone 





600 



Fish scrap or tankage 





350 



Sulphate of ammonia ... ... 



100 





Sulphate of potash 



300 



150 



Sulphate of magnesia 



100 





Plaster (gypsum) 



100 





The following dry mixture is recommended by the North Carolina 

 Station for cotton and corn : 



Pounds. 



Acid phosphate ... ... 800 



Muriate of potash ... ... 100 



Sulphate of ammonia ... ... 60 



Finely pulverised manure from henhou*e3, hors e or cow stables 1,040 



2.000 



In experiments on tomatoes, sweet potatoes, and peaches, annual 

 applications of 10 tons per acre of barnyard manure, supplemented by 

 160 pounds of dissolved boneblack, 80 pounds of muriate of potash or 

 sulphate of potash, and 100 pounds of nitrate of soda, supplied sepa- 

 rately ; and 20 tons of manure, with double the amounts of the other 

 materials, have given good results. 



The fermenting of peat with stable manure was formerly practised 

 to a considerable extent. Where such a compost is desired the mate- 

 rials should be laid down in alternate layers in the proportion of about 

 ire parts of peat to one of manure. 



LASTING OR CUMULATIVE EFFECT OF BARNYARD MANURE. 



Barnyard manure is probably the most efficient means at the disposal 

 of the farmer to permanently improve his soil. No other fertiliser 

 possesses to so great a degree the power of restoring worn soils to pro- 

 ductiveness and giving them lasting fertility. It accomplishes this 

 result, however, not so much by the actual fertilising constituents which 

 it supplies as by improving the physical properties of the soil, increase 

 ing the amount of humus, which is generally deficient in worn soils, 

 improving its texture, and increasing its water-absorbing and water- 

 holding power. Experiments have shown that the influence of manure 

 may be perceptible twenty years after application. Observations at 

 Hothamsted, England, during forty years on barley unmanured, manured 

 continuously, and manured during the first twenty years only showed 

 that " there was gradual exhaustion and reduction of produce without 

 manure, and gradual accumulation and increase of produce with the 

 annual application of farmyard manure. But when the application was 

 stopped, although the effect of the residue from the previous applica- 

 tions was very marked, it somewhat rapidly diminished, notwithstand- 

 ing that calculation showed an enormous accumulation of nitrogen as 

 well ae other constituents." 



