254 



IRRIGATION PRACTICE 



place in the rotations for maintaining the fertility of 

 irrigated land. 



In general, oats and wheat may be treated alike. The 

 quantity of seed should be carefully regulated with respect 

 to the available water. The cultivation, methods and 



DRAINAGE DITCH. 



FIQ. 62. Plan of rice irrigation. 



time of irrigation are practically the same as those dis- 

 cussed under wheat. The duty of water for oats is about 

 the same as for wheat, although oats is rather more sensi- 

 tive than wheat to over-irrigation. Oats of high quality 

 may be grown abundantly by the moderate appli- 

 cation of water. We are quite safe in saying that the 



