20 BULLETIN 1252, U. S. DEPARTMENT OF AGRICULTURE. 
A part of the water is now added and the boiling continued until 
the mixture will dissolve in cold water. This will require about an 
hour. The remainder of the water is then added slowly and the 
mixture thoroughly stirred. For use add 1 quart to 200 gallons 
of spray. , 
CASEIN. 
Commercial caseinate spreaders may be obtained on the market, 
or an equally satisfactory product may be prepared at home. To 
prepare a casein spreader, proceed as follows: 
(CASOIN oo coe oa git ee pend ae Se ee 1 pound. 
1 By ES WORE aS 8] Ec nian ages SheMale ad ES Mind es Stata aay Meets oes nae 8 3 ounces. 
AVY SAMS IEE © 2p ES AE IS 5 NS SEE ETRE AE ee 1 gallon. 
Mix the ingredients thoroughly and let stand for at least an hour 
before using. For use add 1 quart of the casein solution to 200 gal- 
lons of spray. 
If the casein is of coarse granular consistency the above method 
will not be satisfactory, and caustic soda (ordinary lye) should be 
substituted for the baking soda and added to the water first. This 
soda solution should then be heated to the boiling point and the 
casein slowly added while stirring carefully to prevent the forma- 
tion of lumps. The resulting solution should be diluted for use, 
as directed above. These liquid casein preparations do not keep 
well and consequently should not be made up in greater quantity 
than is required for a particular application. 
SPRAYING SCHEDULE. 
In order that the grower may have before him in a concise form 
the recommendations for spraying prunes and cherries offered in 
this bulletin, a condensed spraying schedule is given in Table 7. 
The first column of this table shows the character of the applica- 
tion and the time of applying it, stated in terms of the condition 
of the trees. The second column specifies the most satisfactory 
spray material for use on prunes, together with the proper strength 
to be used. The third column in similar manner specifies the most 
satisfactory spray material for sweet cherries. 
Taste 7.—Spraying schedule for the control of brown-rot on prunes and sweet 
cherries in western Washington and Oregon. 
Application and time. For use on prunes. | For use on sweet cherries. 
First brown-rot Spi (bud spray): | ; : 
Apply when blossom buds are white and | Bordeaux mixture 44-50. 
before full bloom (PI. ITT, fig. 1). | Lime-sulphur 1 to 50. 
Bordeaux mixture 44-50. 
Lime-sulphur 1 to 50. 
Second brown-rot spray (calyx spray): 
Apply as soon as most petals have fallen. 
Third brown-Trot spray: 
Apply as soon as the husks are shed. 
Fourth brown-rot spray: 
Apply two to three weeks before fruit is 
ripe. 
Self-boiled lime-sulphur 8-8- 
| 80. 
Sulphur dust. 
Bordeaux mixture 4—4+—50. 
Lime-sulphur 1 to 50. 
Self-boiled lime-sulphur 8-8- 
50. 
Sulphur dust. 
Self-boiled 
8-8-50. 
lime - sulphur 
Bordeaux mixture 4-4-50. | 
Sulphur dust. 
Self- boiled lime-sulphur | 
8-—S- 50 . 
Bordeaux mixture 44-50. 
| Sulphur dust. 
Sulphur dust. 
Bordeaux mixture 4—4-50. 
Lime-sulphur 1 to 50. 
Sulphur dust. 
Lime-sulphur 1 to 50. 
Sulphur dust. 
Lime-sulphur 1 to 50. 
| Sulphur dust. 
TT 
