44 



DFVTSION OF WATER RESOURCES 



TABLE 19 



SUMMARY OF DATA RELATING TO THE PRE-HARVEST COST PER ACRE OF PRODUC- 

 ING GRAPES, INCLUDING FIXED CHARGES. BUT WITH NO 

 ALLOWANCE FOR IRRIGATION WATER OR INTEREST 



Data obtained from 101 enterprise eflSciency studies made by the agricultural extension service in Fresno, Tulare and 



Kern counties, 1926 to 1929. 



overhead, are not treated on a uniform basis. In one case especially 

 (Table 24) the conditions nnder which the crop were grown were 

 unrepresentative. In spite of the difference involved, the material is 

 included because it shows sometliing of the variation in the data which 

 must be expected in such a study as that reported herein. The sum- 

 mary of the data in Tables 20 to 24, given in Table 25, facilitates 

 comparison. 



TABLE 20 



COST PER ACRE OF PRODUCING 20 ACRES OF EMPEROR GRAPES, AS ESTIMATED 

 BY A SUCCESSFUL GROWER AND SHIPPER NEAR PORTERVILLE 



Pruning - $8 00 



Brush disposal ji 1 50 



Tying 1 75 



Twine - 50 



Sulphur .---.---- 3 00 



Labor in sulphuring (seven applications) 2 50 



Plowing 3 00 



Cultivating, including irrigation furrowing 5 00 



Irrigation labor 3 00 



Suckering (three times) and thinning 3 50 



Miscellaneous - 5 00 



Total pre-harvest cost, not including fixed charges, interest or irrigation 



water --- J41 75 



TABLE 21 



LABOR AND MATERIAL COSTS PER ACRE ON LARGE ACREAGE OF VINEYARD AT 

 DELANO, 1929, NOT INCLUDING IRRIGATION WATER AND WITH NO 

 ALLOWANCE FOR INTEREST OR FIXED CHARGES 



Varieties included Thom[>son, White Malagas, Emperor, Muscat and others. 



Pruning 16 14 



Tying 2 76 



Thinning and suckering.... . . 5 91 



Irrigation lal)or 4 19 



Plowing furrows 59 



Sulphur 34 



Horing . 36 



Tractor work .. 1 18 



Pulling leaves 2 06 



Hrush disposal 1 87 



Miscellaneous 10 



ToUL... $26 50 



in addition to the above, 120 tons were made into raisins at a cotit per ton of $13.70 for picking, turning and hauling. 



