32 VEGETABLE GAKDENING. 



in withholding, or reducing, any material which, if 

 present in undue proportion, would tend to nullify 

 the good effects otherwise obtainable. 



The above-mentioned fertilisers may be used in 

 alternate years with farmyard manure, or they may 

 be used to supplement light dressings of farmyard 

 manure when an ample supply of that material 

 cannot readily be obtained. It is, as already in- 

 dicated, unnecessary in most cases to apply' all 

 three ingredients, especially in addition to farmyard 

 manure ; and the use of fertilisers should be on the 

 following lines, applying them in the quantities 

 already stated : 



Potatoes. Apply phosphates and potash in early 

 spring, and a light dressing of sulphate of ammonia 

 at the time of planting if the soil is poor. 



Peas and Beans. Apply phosphates and potash 

 only, either in early spring or immediately before 

 sowing. 



Cabbage Family. Dress the ground in winter or 

 early spring with phosphates, and apply sulphate of 

 ammonia before planting, or later as a top-dressing. 



Beet, Carrots, Parsnips, and Radishes. Apply sul- 

 phate of ammonia and potash in spring before sow- 

 ing, or top-dress with these later between the rows. 



Onions, Leeks, Turnips, and Celery. Apply phos- 

 phates and potash in winter or early spring, and 

 sulphate of ammonia before planting or sowing. The 

 latter may also be used later as a top-dressing. 



Lettuce and Spinach. These respond to an appli- 

 cation of sulphate of ammonia to the soil before 

 sowing, or as a top-dressing during the period of 

 growth. 



