THE .MANURING OF MARKET-GARDEN CROPS. 



1001 



A 



LIGHT DUNG and PHOSPHATES 



with 



2 cwt. nitrate per acre. 

 No Potash. Potash. 



B 



LIGHT DUNG and PHOSPHATES 



with 



4 cwt. nitrate per acre. 



1 



No Potash. Potash. 



C 



NO DUNG ; PHOSPHATES 



with 



8 cwt. nitrate per acre. 

 No Potash. Potash. 



I 



LIGHT DUNG an 



wi 



6 CWt. NITRA' 



No Potash. 



) 



d PHOSPHATES 

 th 



ce per acre. 



Potash. 



E 



LIGHT DUNG 



(25 loads, or 12| tons, 

 per acre). 



F 



HEAVY DUNG 



(50 loads, or 25 tons, 

 per acre). 



Each of our plots, A, B, C, D, E, and F, is, as a rule, one-fiftieth of 

 an acre in area. Each of the first four is subdivided into two, one half-plot 

 receiving potash salts, the other half-plot receiving no potash salts — the 

 dressing otherwise on each half -plot being uniform. 



In the case of some crops clung is intermitted, in accordance with 

 ordinary market garden practice. The dung in all cases is purchased town 

 dung from London. 



We vary the kind of phosphates by using sometimes superphosphate 

 and sometimes basic slag. Since phosphates are required by all crops 

 and are cheap, no particular interest attaches in market gardening to 

 whether a hundredweight or two more or less of phosphates is used per 

 acre, provided only that a sufficiency be given ; and, as no harm is likely 

 to arise from giving an excess, we have given liberal dressings. Of 

 superphosphate we have usually used from 4 cwt. to 6 cwt. per acre, 

 6 cwt. per acre being adopted latterly. When basic slag has been used, 

 we formerly applied 7 cwt.' per acre, but latterly we have increased our 

 dressings to 10 cwt. per acre. The actual dressings of phosphates per 

 acre in the various years were as follows : — 



1894. 4 cwt. Superphosphate and 4 cwt. Basic Slag, mixed. 



1895. 4 cwt. Superphosphate. 



1896. 6 cwt. Superphosphate. 



1897. 7 cwt. Basic Slag. 



1898. 4 cwt. Superphosphate. 



1899. 6 cwt. Superphosphate. 



1900. 10 cwt. Basic Slag. 



1901. 6 cwt. Superphosphate. 



1902. 6 cwt. Superphosphate. 



As a source of potash, kainit has sometimes been used, at the rate of 

 4 cwt. per acre ; but latterly we have used sulphate of potash at the rate 

 of 1 cwt. per acre. 



It has been necessary, owing to the large number of crops under 



