140 
The Philippine Journal of Science 1922 
TABLE 9.—Cost of labor in spraying operations; 238 trees—Continued. 
Third application, August 24 and 25: Yen. 
Men: 66 hours = 11 6-hour days, at Y 1.20 per 
day 13.20 
Work animals: 11 hours = 18 6-hour days, at Y 
3 per day 5.50 
Total 18.70 
Cost per tree 0.06 
Total cost for season 60.55 
Total cost per tree for season 00.2544 
The above figures include the time émployed for the prepara- 
tion of the spray mixtures, time lost because of unfavorable 
weather, and time required in repairing pump, harness, etc. 
The cost is representative of what would actually be the case 
in farm operations. Spraying in a commercial orchard, with 
but one mixture and without regard to plats of a limited number 
of trees, would undoubtedly result in lower labor costs. 
TABLE 10.—Cost of spray materials for the season. ‘ 
Quan-| Cost Cost 
ay Spray used. oe co ig org Pe Remarks. 
Gals. | Yen. Yen 
1| No spray -----. ps AB Sects 
2 Lime sulphur 1-40_._._- 80 1.10 22, 0.05 | Trees smaller than average in 
orchard. 
3 | Bordeaux 4-4-50 80 1.54 22 | 0.07 Do. 
4 | Bordeaux neutral _-____- 65.5 1.12 22 | 0.051 Do. 
6 | Basgwndy 82.5 | 1.67 22 | 0.071 
6 | Lime sulphur--_.-..--.- 87.5 1.20 22 | 0.055 
7 | Bordeaux 4-4-50_....... 92.5 1.78 22 0.081 | Rather large trees above aver- 
age in orchard. 
8 | Bordeaux neutral _____. 105 1,81 22 | 0.082 Do. 
9} Bargundy .o.42.02. 2.2. 85 1.51 22 0.069 Do. 
10 | No treatment > 5 Seatac Do. 
11 | Formalin 1-100 -........| 10 16.38 22 0.745 
12 | No treatment iu Se ionupawes 
18 | Bordeaux neutral_.....| 29.5] 0.52 10 | 0.052 
i4 | Botgundy.3. 0... .2 5.5: 87.5 | 0.67 10 | 0.067 
15 | Lime sulphur 1-40._....| 87.5 0,52 10 | 0.052 
16 | Bordeaux 4-4-50___.___- 42.5} 0.82 10 | 0.082 
17 | Nospray pee pa Bee Ba 
18 | No treatment » 20 oo 
19 D6. ee gk, 50-4555. 3355 
«A number of these trees were Unshiu (Satsuma) or Valencia orange trees. Although 
fruits from these plats did not enter into the experimental data, they were nevertheless 
sprayed in passing down the orchard rows; their number therefore is necessarily included in 
estimating the cost of the spraying operations. 
