22 APPLE BLOTCH IN SOUTHERN ORCHARDS. 



sprouts of unpruned trees, and these are an ever present source of in- 

 fection for the fruit. Careful pruning will not only remove a large 

 portion of the diseased twigs but will greatly facilitate thorough 

 spraying. 



COMBINATION TREATMENT FOR APPLE BLOTCH AND OTHER 



DISEASES." 



The treatment for apple blotch conforms closely to that for apple 

 bitter-rot and with one or two additional applications all the other 

 important fruit and leaf troubles may be controlled. The follow- 

 ing course of treatment is therefore recommended for orchards in 

 southern sections, especially where apple blotch and bitter-rot occur. 



First application. — When the cluster buds are well out, just before 

 the blossoms open. This is the first treatment for apple scab and is 

 of special importance for badly scabbing varieties, such as the Wine- 

 sap, Arkansas, Arkansas Black, and Red June. It may be omitted 

 from the Ben Davis, Gano, Jonathan, and York Imperial, which scab 

 very little or not at all in most southern sections. This application 

 also constitutes the treatment for the spring canker worm. 



Second application. — Immediately after the petals fall. The work 

 may be commenced when about two-thirds of the petals have dropped 

 and should be finished within a week or ten days, that is, before the 

 calyx lobes close. This constitutes the second application for scab 

 and the first for the codling moth and is the most important treat- 

 ment for both. 



Third application. — Three to four weeks after the petals have 

 fallen. This is the first and most important application for apple 

 blotch and is the second treatment for the codling moth. 



Fourth application.— Eight to nine weeks after the petals have 

 fallen, or not later than June 25. This is the first treatment for 

 bitter-rot, the second for blotch, and the third for the codling moth. 



Fifth application. — Two to three weeks after the fourth applica- 

 tion. This is the second treatment for bitter-rot, the third for blotch, 

 and is also important for the codling moth. 



Sixth application— Three weeks after the fifth application. This 

 is the last treatment for bitter-rot and blotch and is important to pre- 

 vent late infections. It is also very important for the control of the 

 second brood of the codling moth. 



The course of treatment given above is intended for the control of 

 all the important apple troubles, such as scab, bitter-rot, blotch, leaf- 

 spot, codling moth, and canker worm, and does not apply to all 



a Mr. A. L. Quaintance, of the Bureau of Entomology, is the authority for 

 that portion of this schedule of treatments relating to the codling moth. 

 144 



