ARID AGRICULTURE. 



429 



may be worked in to advantage and rows of wil- 

 lows find a place in such plantings. Plant the 

 inside rows closer together. A low trench left 

 by furrowing with a lister or by back furrowing 

 leaving the soil higher between the rows, will 

 cause the moisture to run toward the newly 

 planted young trees in the trenches. Shelter 

 belts also catch drifting snows and are often 

 more successful than single rows or narrow wind- 

 breaks. 



COMBINED 



WIND- 

 BREAK AND 

 FOREST 



In many parts of the West the growing of 

 trees for commercial purposes is becoming profit- 

 able. In California, Eucalyptus plantations are 

 grown for wood, and harvested in five or six 

 years from planting. In part? of Kansas, Ne- 

 braska and Colorado, plantations of Catalpa and 

 Black Locust are being set out for the production 

 of railroad ties and fence posts. It is expected 

 they will reach sufficient size in twelve to 

 eighteen years. Some are even setting out black 

 walnut groves for future lumber with the knowl- 

 edge that there must be a wait of from fifty to 

 eighty years to reap what has been sown. 



Such timber plantations, if located with the 

 object in view, furnish both wind-breaks and 

 stock shelter. 



FENCE 

 WIND- 

 BREAKS 



Board, pole, log or brush fences are often 

 used by range sheepmen to protect their flocks at 

 night or during storms. Such fences make 



