414 



Market-Garden Soils mid Crojtx 



Map 25. Legumes (clover, sainfoin, lucerne) ; heavier types of 

 soil, but also with the old brown gravel soil formation. 



Map 26. Cereals; wide distribution, but heavier soils more closely 

 associated with them than otlier soil formations. 



Map 8. Pasture ; alluvial, pure Oxford clay and pure boulder clay 

 soil formations. 



The following tabh? has been prepared to show the extent to which 

 tiie various soil formations are used for market-gardening. The 

 percentages given are the percentages of arable land on each soil forma- 

 tion, occupied by (1) market-garden crops as a whole, (2) farm crops. 

 For this purpose brussels sprouts and late potatoes have been considered 

 as market-garden crops. 



Below a graph has been drawn to show the relationship of market- 

 gardening, as a whole, to the texture of the various soil formations. 

 For this purpose the percentage of arable land devoted to market- 

 gardening, on each soil formation, has been plotted against the per- 

 centage of clay and fine silt, together, in the soils of each formation. 

 It will be noticed that the area devoted to market-gardening decreases 

 fairly regularly with an increasing percentage of the finer particles. 

 There are four exceptions which are shown by dotted lines on the graph. 

 The redland and the boulder clay on greensand soil formations fall 

 considerably below the main line. This is due to the fact that both 

 these soil formations are difficult to cultivate owing to their property 



