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FIEST YEAR SCIENCE 



Crops are usually planted only every other year, two 

 years' moisture being retained for one crop. The soil is, 

 however, kept thoroughly cultivated all the time. Of 

 course plants requiring the least amount of moisture are 

 best adapted to dry farming. 



Irrigation is the most efficient means of raising crops in 

 regions of insufficient rainfall or of droughts. Water is 



IRRIGATION IN SQUARES. 



brought to the land from distant sources, or from flowing 

 artesian wells, or is pumped from wells which have been 

 sunk to an available water table. In this way water can 

 be supplied to plants whenever needed. Where the 

 ground is quite level it is often flooded, sometimes in 

 larger or smaller squares, with little ridges separating the 

 squares. A great deal of water is lost in this ..way by 

 evaporation. 



Another way is to plow furrows eight to ten inches 



