34 



BULLETIN 614, U. S. DEPARTMENT OF AGRICULTURE. 



The most economical method of making furrows is with the 6-foot 

 cultivator, using a crew of one man and two horses. (See fig. 6.) This 

 crew will cover 9.9 acres in 10 hours, making the usual number of fur- 

 rows, six, at a cost of $0.55 per acre. A little more time is required to 

 make the furrows with the same size crew using a shovel plow, although 

 fewer furrows are to be made between rows. A crew of one man and 

 one horse with a shovel plow making the usual number of furrows, 

 four, will cover 6.02 acres in 10 hours, at a cost of $0.67 per acre. 

 Table XXVIII gives the average number of acres creased in 10 hours 

 with different implements and crews." 



Fig. 6. — Furrowing out ditches for irrigating in a 4-year-old orchard in the Nob Hill section. The 

 scarcity of leaves near the tops of the branches is due to rosette, a disease brought about by soil 

 conditions. 



Table XXVIII.— Average number of acres creased with different crews and implements 

 in 10 hours and the cost per acre. 





Clean -cultural management. 



Mulch-crop management. 



Implement. 



Num- 

 ber 

 of 

 rec- 

 ords. 



Num- 

 ber 

 of 

 fur- 

 rows. 



Man. 



Horse. 



Acres 

 in 10 

 hours. 



Cost 

 per 

 acre. 



Num- 

 ber 

 of 

 rec- 

 ords. 



Num- 

 ber 

 of 



fur- 

 rows. 



Man. 



Horse. 



Acres 

 in 10 

 hours. 



Cost 

 per 

 acre. 



6-foot cultivator 



28 

 28 

 13 



6 

 4 

 5 



1 

 1 



1 



2 



1 

 2 



9.90 

 6.02 

 7.30 



SO. 55 

 .67 

 .75 



5 



16 

 18 



6 

 5 

 5 



1 

 1 



1 



2 

 1 

 2 



10.99 

 5. 75 

 5.59 



SO. 50 

 .70 



Do 



.98 







Considering all records under clean-cultural management, What- 

 ever implement or crew is used, the annual charge for all creasings 

 is 4.79 man-hours and 7.23 horse-hours per acre, at a cost of $2.27. 



