140 



IHKIGATIOX FARMING. 



trees along the ditches on the lower side. Professor 

 Blount of New Mexico lays out his orchards on a grnxle 

 of one inch to one hundred feet east and west, and on a 

 level north and south. He admits water at the north- 

 west corner of his quincunx plantation, and by double 

 furrows his trees are irrigated on all sides, as displayed 

 in Figure 50, and by which means his rootlets are uni- 

 formly watered. 



FIG. 50. DOUBLE FURROW ORCHARD SYSTEM. 



In all furrow operations it is best to allow the water 

 to trickle gently through them until the land is well 

 moistened at a spade's depth between the furrows. Be- 

 fore allowing to dry, hoe back the earth into the furrows, 

 and cultivate as soon as the land will admit. By irrigat- 

 ing in this way evaporation will be reduced, water will 

 be economized, the earth will be moistened to a depth of 

 at least two feet, and one irrigation of this kind will last 

 as long as two or three by flooding. 



