ioo Fruitgrowing under Irrigation 



the soil at places where there is defective under- 

 drainage, due to a subsoil that is more or less 

 impervious to water. Seepage is often brought about 

 by the excessive use of irrigation water, in saturat- 

 ing the subsoil with water at a quicker rate than it 

 can drain away ; therefore water should always be 

 applied with moderation and should never be in 

 excess of the requirements of the plants. 



The remedy for seepage troubles is an effective 

 system of under-drainage by means of earthenware 

 pipes. These should be put down in a similar man- 

 ner as described in the remarks made upon the 

 drainage of alkaline lands ; but in this case no 

 leaching of the top soil is necessary, as there is 

 already a surplus of water, and all that is wanted is 

 an efficient drainage system to carry the water 

 away. 



