CROPS ON ALKALI LAND, HUNTLEY PROJECT, MONTANA. 



15 



Table XII. — Approximate cost per acre of reclaiming land on the Worden tract by the 



third method — -Continued. 



Year and item of cost. 



Cost. 



Total. 



1911. 



Irrigating (once, in spring) 



Manuring (20 loads, at 50 cents a load) 



Plowing rye under 



Grading and bordering plats 



Irrigating (2 times, at 40 cents each) 



Cultivating and leveling (3 times, at SI. 50; . . 



SO. 40 

 10.00 

 4.00 

 4.00 

 .80 

 4.50 



Total for 1911 . 



1312 



Manuring (20 loads, at 50 cents a load) 



Plowing 



Double disking 



Harrowing 



Leveling 



Irrigating (6 times, at 40 cents) 



Cultivating and leveling (6 times, at $1.50) . 



10.00 

 4.00 

 1.00 

 .25 

 .75 

 2.40 

 9.00 



Total for 1912.... 

 Total for 3 years . 



S23.70 



27.30 



59.95 



COMPARISON OF THE THREE METHODS. 



Effect on salt content. — -In comparing the efficiency of the different 

 methods of reclaiming this land, the effect on the amount of total 



■6 6-/2 Z2-24- 



24-36 



-40 



Fig. 7.— Diagram showing the average total salt content of the soil at six depths in 1913 on plats which 

 had received treatment according to the first, second, and third methods, respectively, and of adjacent 

 virgin soil. 



salts contained in the surface 4 feet of soil will be considered first, 

 Table XIII gives the average salt content to a depth of 4 feet in 1913, 

 and figure 7 shows graphically the same results. These samples we r e 

 taken on May 2, June 5, July 16, September 3, and October 23, 4-foot 

 borings being made on each date. 



