CHAPTER VI 



FREQUENCY, AMOUNT AND MEASUREMENT OF WATER 

 FOR SINGLE IRRIGATIONS 



To have become able to apply water to crops at 

 the right time, in the right amounts and in the best 

 manner is to have attained the acme of the art of 

 irrigation. Unfortunately, it is no more possible to 

 bear a man to this position on the vehicle of language 

 than it is a cook to the art of making the best bread. 

 Both arts are founded upon the most rigid of laws, 

 which may be readily and certainly followed when the 

 conditions have been learned. But the minutia3 of 

 essential details are so extreme that words fail utterly 

 to convey them to the mind, and they must be per- 

 ceived through the senses, to be grasped with such 

 clearness as to lead unerringly to the right results. 

 There are, however, general principles underlying the 

 art, which may be readily stated, and, when com- 

 prehended, place one in position to more quickly grasp 

 the details essential to complete success in the appli- 

 cation of water to crops. 



THE AMOUNT OF WATER FOR SINGLE IRRIGATIONS 



In humid climates, there is always more or less 

 soil -leaching, resulting from . super -saturation of the 



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