20 



TRUCK-FARMING AT THE SOUTH. 



mus, and green manuring is the most efficacious and 

 cheapest manner of supplying the land with large quan- 

 tities of this necessary ingredient. 



It should be practised by gardeners, irrespective of the 

 supply of stable manure they may be able to command. 

 But for those located at a distance from cities, and there- 

 fore not able to secure a sufficiency of barn-yard manure, 

 green manuring becomes an absolute necessity. 



It has been estimated that after the removal of a crop 

 of clover and other plants, there remained in the soil, as 

 shown in the following tables, a large amount of roots: 



TABLE SHOWING THE QUANTITY OP ROOTS LEFT IN THE GROUND AFTER 

 HARVESTING THE CROPS ALSO THE AMOUNT OF NITROGES AND ASH. 



ANALYSIS OF THE ASH OF THE ROOTS IN THE FOREGOING TABLE. 



