﻿NORMAL DAY S WORK FOR VARIOUS FARM OPERATIONS. 



17 



the same proportion as the power, and in part by the apparent ineffi- 

 ciency of 3-horse and 5-horse hitches and the difficulty to the aver- 

 age teamster in handling them. In general, each horse was loaded 

 with 2 feet in width and must harrow 2.5 to 3 acres on freshly plowed 

 land and from 3 to 3.75 acres daily on well-packed land. The duty 

 of each foot in width of harrow is from 1.3 to 1.5 acres daily on 

 freshly plowed land and from 1.5 to 1.8 acres on well-packed land, 

 assuming adequate power at the normal speed of horses. 



In Table VIII original data for the most commonly used widths 

 and teams in disking are presented, together with adjusted factors 

 for these widths and a scale of allowances for other widths. The 

 daily duty for any team and width can be ascertained from this 

 table by inspection. 



Table VIII. — A normal day's work with a disk harrow, giving the average daily acreage 

 reported for the widths most frequently used and adjustments for other widths. 











[Net hours in the field, 9.65 



] 











Width of harrow. 



On freshly plowed land. 



On well-packed land. 



Num- 























ber of 





Most 



Har- 







Allow- 



Har- 







Allow- 



horses. 



Range. 



rowed 



Number 



Adjusted 



ance for 



rowed 



Number 



Adjusted 



ance for 





width. 



per 



day. 



averaged. 



acreage. 



each foot 



per 



day. 



averaged. 



acreage. 



each foot 











in width. 







in width. 





Feet. 



Feet. 



Acres. 







Acres. 



Acres. 







Acres. 



2 



4-8 



6 



7.2 



159 



6.5 



0.50 



7.5 



147 



6.7 



0.60 



3 



5-10 



6 



7.5 



163 



6.8 



.60 



9.1 



165 



8.0 



.70 



4 



6-10 



8 



12.8 



414 



11.5 



.80 



15.4 



432 



14.0 



.90 



5 



7-10 



8 



11.3 



7 



12.0 



.85 



13.4 



7 



14.5 



.95 



6 



7-10 



8 



15.4 



16 



13.5 



1.00 



18.0 



19 



16.0 



1.10 



ROLLING WITH LAND ROLLER. 



The land roller is not an implement of heavy draft, 83 per cent of 

 users finding two horses adequate for a considerable range in width. 

 The 8-foot width is most generally used, while about equal numbers use 

 6, 7, and 10 foot widths. Widths of 12 and 14 feet are not uncommon. 

 A 3-horse team is used by 6 per cent and four horses by 8 per cent of 

 farmers. Where three or four horses are used, the acreage per horse 

 is slightly less than with two horses. With the 2-horse teams each 

 foot in width covers less area daily than with larger teams, indicating 

 that the latter move on the average somewhat more rapidly than 

 two horses. With land rollers it appears to be economical to use the 

 larger sizes, since more land can be covered in a given time without 

 adding greatly to the work of the available horses. A width of 4 or 

 5 feet is a reasonable load per horse and 5 to 7 acres daily per unit of 

 power can be normally expected. The duty of each foot in width is 

 from 1.6 to 1.9 acres daily. 

 5774°— Bui. 3—13 3 



