﻿NORMAL DAYS WORK FOR VARIOUS FARM OPERATIONS. 



11 



When the sulky plow data were grouped by teams working at 

 reported depths with the widths averaged, the width decreased as 

 the depth increased and the same was true of the acreage per day and 

 per horse. On account of the greater width of sulky plows as com- 

 pared with walking plows, the cross section increases rapidly with 

 increased depth, thus limiting the implement to more shallow work 

 with a given amount of power. When four horses are used, the 

 acreage per 1,000 pounds of horse was practically the same at all 

 depths reported, indicating that a cross section of about 26 inches 

 and a daily acreage of 0.65 acre is a comfortable and reasonable task 

 for each 1,000 pounds of horse with this implement. 



Comparison of the data for walking and sulky plows indicated that 

 for the same widths and depths with the same number of horses in 

 the teams the sulky plow is somewhat more efficient than the walking 

 plow from the standpoint of area covered in a day, but that the sulky 

 type is limited to more shallow plowing. 



In Table III the data for sulky plows have been brought together 

 by horses in the team and under each team the averages for the 6-inch 

 depths are given for the 12, 14, and 16 inch widths. This table is in 

 all respects similar to Table II. The daily duty of any team, width, 

 and depth can be ascertained by inspection of the fourth and fifth 

 columns. 



Table III. — A normal day's work with a sulky plow, giving the daily acreages reported 

 at 6-inch depths for each width, adjustments for these widths, and a scale of allowances 

 for other depths. 



[Net hours in the field, 9.65.] 



Team and width. 









Allow- 



Plowed 

 per day. 



Number 

 averaged. 



Adjusted 

 acreage. 



ance per 



inch for 



other 



depths. 



Acres. 

 1.84 

 1.93 

 2.31 



11 



18 

 4 



1.65 

 1.75 

 1.85 



Acres. 

 0.10 

 .12 

 .15 



1.93 

 2.41 

 2.94 



7 



59 

 171 



2.20 

 2.40 

 2.60 





 .10 

 .12 



3.00 

 2.83 

 3.19 



1 



6 



25 



2.30 

 2.50 

 2.80 











.10 



Prac- 

 ticable 

 depths. 



Two-horse teams: 



12 inches 



14 inches 



16 inches 



Three-horse teams 



12 inches 



14 inches 



16 inches 



Four-horse teams: 



12 inches 



14 inches 



16 inches 



Inches. 

 3 to 8 

 3 to 7 

 3 to 6 



3 to 10 

 3 to 9 



3 to 8 



3 to 12 



3 to 12 

 3 to 10 



Compilation of the data for gang plows indicated that 58 per cent 

 of the gang plows used have 14-inch bottoms, 30 per cent use two 

 12-inch bottoms, while only 12 per cent use other sizes. A limited 

 number use a light gang with two 10-inch bottoms. It was seen also 

 that deep plowing is practiced less with gang plows than with sulky 

 plows, 29 per cent reporting 5 inches deep, which percentage would 

 doubtless be largely increased if correction were made for concentra- 

 tion on the 6-inch depth. Less than 2 per cent reported depths 



