. Better fruit. Fruit-culture. Page 6 BETTER FRUIT March, IQ20 cide. Lead arsenate is valiuibk- not only as an insecticide but in increasing the elTcctiveness of tiie I'linMicidc. A fourth application, in wliidi the same fungicide is used and at the sanie slrcngth as in the preceding applica- tion, should usually follow the "calyx spray" within ten days or two weeks, in order that the protection of the rap- idly growing fruit may be continued. In a dry , however, this applica- tion is less important and may be omit- ted. Lead arsenate should again be ; d<led to the fungicid
. Better fruit. Fruit-culture. Page 6 BETTER FRUIT March, IQ20 cide. Lead arsenate is valiuibk- not only as an insecticide but in increasing the elTcctiveness of tiie I'linMicidc. A fourth application, in wliidi the same fungicide is used and at the sanie slrcngth as in the preceding applica- tion, should usually follow the "calyx spray" within ten days or two weeks, in order that the protection of the rap- idly growing fruit may be continued. In a dry , however, this applica- tion is less important and may be omit- ted. Lead arsenate should again be ; d<led to the fungicide, to control chew- ing insects. The last spray which is generally re- quired should be applied about a month after the "calyx ; Either lime- rulphur solution, diluted 1 to 40, or bor- deaux mixture (3-3-50) may be used, but the latter is reconuiiended for this ap- plication because of the tendency of sulphur sprays to cause injury to fruit and foliage when used during hot wea- ther and intense sunlight. For summer pears, such as the Bartlett, no later spraying ordinarily is necessary in this region, but in the case of varieties that are not picked until after the fall rains begin it is essential to .spray again be- fore the rainy period is expected. By systematically following the spray- ing schedule here described and con- cisely outlined in the table it has been possible to reduce the loss from pear scab to an amount almost negligible from a commercial standpoint as seen in Figure 7. Insect Pests There are several insects which cause a great deal of damage to pears in West- ern Washington and Oregon. The meth- ods of controlling these insects vary, and it is therefore essential that the or- chardist know what insect is damaging his trees or fruit before attempting to remedy the trouble. Otherwise he may be spending his time and trouble for nothing. The table given with this article sum- marizes the control measures recom-. I-iriH, 7--Si\Uiii buKcs of clean pe
Size: 1535px × 1627px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcollect, bookcollectionbiodiversity, booksubjectfruitculture
