74 CELERY CULTURE 



or some hardpan that will prevent the escape of the 

 water. Openings to the tiles should be provided at 

 least every loo feet for the admission of the water, 

 and the watering may be accomplished by inserting 

 the end of a hose and allowing the water to run into 

 the tile for a short time. By this method the water 

 finds its way into the soil through the joints of the 

 tiles, while the surface soil may be kept quite dry 

 and under frequent cultivation. A cross-section of 

 soil showing the proper arrangement of tiles is 

 shown in Fig. 28. 



The subirrigation system of watering is being 

 applied on rather a large scale by the celery growers 

 around Sanford, Florida. Here the celery fields are 



I I 



I I I I I I I - > 



VEGETABLE GARDEN 



B 



I I I I I I I 1 I 1 I I I [ I I I ~~\ 



be 



WALK 



BERRIES 



FIG. 29 — PLAN OF SUBIRRIGATION SYSTEM ADAPTED TO BACK-YARD 

 GARDEN 



