I82 



IRRIGATION FARMING. 



grade, as this precaution will save much subsequent 

 trouble. 



A new furrow in orchards or vineyards should be 

 plowed every time an irrigation is to occur, for the 

 closely following cultivation which is the most impor- 



FTG. 51 — DISTRIBUTING GATES OF IRRIGATION CANAL. 



tant part of this work will close over and obliterate the 

 •furrows. Make a furrow on each side of the trees and 

 give an irrigation that is calculated to carry the water 

 well down into the soil — lower than the roots if possi- 

 ble, and for this reason the writer advises sub-soiling 

 before the planting is done. The first year after plant- 



