22 BULLETIN 693, U. S. DF^PARTMENT OF AGRICULTURE. 



Table X. — Harroiving 'practice (spike-tooth). 



Distiet. 



Year. 



Num- 

 ber of 

 farm 

 records. 



Acres 

 har- 

 rowed 

 per 

 farm. 



Num- 

 ber of 

 times 

 har- 

 rowed. 



Average crew. 



Hours per acre. 



Cost 

 per 





Man. 



Horse. 



Man. 



Horse. 



acre. 



Garland 



1914-15 



1914-15 



1915 



78 

 50 

 34 



18.8. 

 14.9 

 19.9 



2.82 

 2.57 

 3.40 



1 



1 



1 



3.2 

 2.7 

 3.1 



2.02 



2.6 



2.2 



6.39 

 5.50 

 6.80 



$0.98 



Prove 



Idaho Falls 



1.04 

 1.12 







The harrowing was done during the months of March, April, and 

 May. Under average conditions the land was harrowed approxi- 

 mately three times with implements about 10 feet in width. The 

 typical crew consisted of one man and three horses. This size was given 

 for 95 out of 162 estimates. A crew of one man and four horses 

 was second in importance, appearing in 35 records. There were 31 

 reports which contained information on the use of 1-man 2-horse 

 crew. Nineteen of these were in the Provo district. In this area 

 about 10 acres were considered a day's work with the spike-tooth 

 harrow. The Garland growers averaged about 14 acres per day, 

 while at Idaho FaUs 15 acres was the average area covered in 10 

 hours. Only a few farmers at Idaho Falls used the spring-tooth — 

 a fact which undoubtedly accounts for the greater use of the spike- 

 tooth in comparison with the Utah districts. 



Table XI. — Harrowing practice (spring -tooth). 





Year. 



Num- 

 ber of 

 farm 

 rec- 

 ords. 



Acres 

 har- 

 rowed 

 per 

 farm. 



Num- 

 ber of 

 times 

 har- 

 rowed. 



Average crew. 



Hours per acre. 



Cost 



District. 



Man. 



Horse. 



Man. 



Horse. 



per 

 acre. 



Garland 



1914-15 



1914-15 



1915 



35 

 29 



7 



17.9 

 11.05 

 11. 40 



1.60 

 1.77 

 1.80 



1 

 1 

 1 



3.48 

 2.89 

 3.70 



1.76 

 2. .50 

 1.74 



6.08 

 7.20 

 6.30 



$0.90 

 L20 





.98 







Spring-tooth harrowing was reported in 71 farm records, the 

 majority of these being divided about equally between the Garland 

 and Provo districts, Comparuig the work done with the spring- 

 tooth with that done with the spike-tooth harrow, it will be observed 

 that the fields were not gone over so frequently with the sprmg- 

 tooth. The average width of the latter was about 6| feet. Forty- 

 six records gave a crew of one man and three horses. In the Garland 

 area 18 reports were based upon a 1-man and 3-horse crew, while 17 

 were applicable to a 1-man and 4-horse crew. Provo farmers covered 

 about 7 acres per day with this type of harrow, while the Garland 

 operators averaged 9 acres. 



