16 CALIFORNIA AGRICULTURAL EXTENSION SERVICE [CIRC. 42
proper spray materials should be obtained with the view of securing
the best for the particular pests to be combatted. While it is sometimes
advisable to make sprays at home it is now generally considered more
satisfactory to purchase proven proprietary compounds from reliable
spray companies. With standard materials and average sized trees, it
costs from 6 to. 8 cents per tree including labor for each application.
This application of the sprays or dusts to the trees is a most
important consideration. Too many growers slight this operation.
It is well for the grower to study the pests and to learn about their
habits in order to apply control measures more intelligently. The
proper timing of the application is sometimes more important than
anything else. Thoroughness is another warning that must be repeated.
The spray or dust should be applied to completely cover the parts of
the tree where the pest is or will be expected.
TABLE 3
EXPENSES PER ACRE ON FULL BEARING ORCHARDS IN SraNIsLAUS COUNTY,
1925-192823
Item
Pruning and brush disposal...........cccccccoocccorcricornn
IrTigation. ooo
COI TOP rssssssicsnis ia TRA mer eesterscossesescmtasen
CULVALION. cov. eres
PLOPDIDE cover cece
ES E:8 CA oT SA
Hauling to eanmery.............o.ccoooeeo
SDLAYINE errerrecrirrriririmeis eerie seers eee oes
MiSCRIIANEOUS. c.....covvcvvvvrroriore eee
General eXDPenses. .......ccooovivv.ooocecrooes ooo
IELTZALION TAXES. covrerereerrirereeroeeee eee eoooeeeooooo
COUNY EBXOE...occrores reverence ees
Average
annual costs
$26.47
6.50
3.12
15.89
28.32
4.26
54.04
14.83
13.85
4.97
7.72
5.84
8.07
Average sub-total... $187.16
Interest and depreciation on trees... 41.98
Interest and depreciation on improvements............. 1.03
Interest and depreciation on equipment... 5.46
Interest on investment in land... 20.84
Total ost... $356.48
Total acres in study... 156.91
COSTS OF PEACH GROWING
The cost of producing peaches is profoundly modified by many
variable factors. The most accurate and far reaching information
regarding costs is that now being obtained by the Aericultural Exten-
2s Data for tables 3, 4, and 6 taken from: Fluharty, L. W., F. R. Wilcox, and
A. A. Jungerman. Summary of the peach efficiency study for Stanislaus County,
1925-28. (Mimeographed.) Agricultural Extension Service, University of Cali-
fornia. 1920.