532 



THE IRKIGATION AGE. 



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(Continued from Page 508) 



quickest and most efficient manner. 

 Many western irrigators use too much 

 water and too little cultivation. Many 

 injure their crops and soils by allow- 

 ing the water to run too long on one 

 place, drowning the plants and alkaliz- 

 ing the soil. A quick application of 

 water which thoroughly soaks the 

 land and then removing it, to give the 

 soil opportunity to become aerated 

 again, is best. 



In the arid regions systems of irri- 

 gation and cultivation which induce 

 plants to send their roots deep into 

 the soil are important. Deeply rooted 

 plants are not so subject to drouth 

 and find a comparatively large soil 

 pasture from which to gather moist- 

 ture and plant food. Deep and con- 

 tinuous cultivation from the time the 

 nlant is started until the crop has 

 become thoroughly established, will 

 do much to secure deep rooting. This 

 is important in orchards and tree 

 plantations. The cultivation must be 

 continuous, however, for if left for 

 a long enough season of growth most 

 of the plant roots will be thrown into 

 the surface soil, after which cultiva- 

 tion would so severely prune the roots 

 as to set back the growth and injure 

 the plants. Light or superficial irri- 

 gation which simply puts enough 

 moisture into the soil to wet the sur- 

 face induces plants to throw out 

 surface roots instead of those which 

 should go deeper into the sub-soil. 

 It also starts evaporation from the 

 surface which causes loss of water. 

 Deep and thorough irrigation causes 

 deep rooting. 



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When writing to advertisers please mention The Irrigation Age. 



