CHAPTEK III. 



ROTATION, SOWING, AND TRANSPLANTING. 



Rotation of Crops. Before fertilisers are applied 

 the ground should be marked off, mentally at least, 

 for the various crops, and provision made for plant- 

 ing the latter in groups, and manuring them accord- 

 ing to their special needs ; in each case withholding 

 the fertiliser least required if the ground was suitably 

 manured for the previous crop and properly treated 

 during the winter. Assuming this to have been done, 

 there is no advantage, for example, in applying 

 additional nitrogen to pod-bearing crops, phosphates 

 to root crops, or potash to green crops. 



In allocating the vegetable crops each year, atten- 

 tion should be paid to carrying out as far as pos- 

 sible a sound system of rotation, based on the food 

 requirements of crops and the effects which the growth 

 of each produces on the soil. This is an important 

 factor for continued success in vegetable growing ; 

 and both general experience and special experiments 

 prove that it is not good practice to grow the same 

 kind of crop, or crops requiring the same manurial 

 treatment, on the same ground year after year. This 

 practice, if persisted in, causes far-reaching changes 



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