April, '11] 



o'kane: apple maggot control 



177 



A survey of the records indicates that to answer this question 

 it is advisable and practicable to group the apples into three classes: 

 early or summer varieties; fall varieties; and late fall or winter 



f{Atc gf £mer^eMcfi 

 <jf Larwac from Drobs 



SuiCtt 



Fail Varieties 



^ne. 



f;^urtS a/tfnj ^'nCS of eurVCi 



CLirrci baicti Qn season totat^. 



Fig. 1 



varieties. The question is easier if we chart the average performance 

 of the varieties observed. 



So doing, we find that the August Sweet, Early Harvest and Red 



Rafc of Emergence. 

 of La.rira.c ffom Dro^S 



Lar* Fa.ll and Winlir 

 Variftf leS 



Fi^urtt a-UnJ linn ,i 

 fit.- tt..y»«f,</ <yi-o>i. 



"•/■•!?■ 



Fig. 2 



Astrachan, typical of summer friiit, describe a curve that rises fairly 

 rapidly the first week. The Early Harvest shows the sharpest rise, 

 and is also the earliest fruit. The Red Astrachan shows the least 

 angle of rise, but, in proportion to the total, this angle is considerable. 

 Evidently the first week is productive of trouble in this class of fruit. 



