SPRAYING THE APPLE ORCIIAKI). 53 



the apple through the calyx and feed in the cavity before 

 boring into the apple. It is therefore of the utmost im- 

 portance that the calyx cavity be well filled with the poison, 

 so that the first meal of the young worm may be his last. 

 If the spraying be delayed until the calyx has closed, but 

 few of the apple worms will be killed. In an experiment 

 made in the orchard of Prof. F. W. Hooper at Walpole, 

 N. H., the past season, the spraying was unavoidably de- 

 layed until after the calyxes had closed. As a result the 



sprayed trees were 

 practically as wormy 

 as those not sprayed, 

 though the spraying 

 effectually checked the 

 scab (see page 39). 



If there be much of 

 the "brown spot" (see 

 page 41), so common 

 on the Baldwin, or 

 other diseases, it will 

 be Avell to spray again 



67fhe'Jod!mg moth!^ *° "^'^'' about ten days or two 



weeks after the last 

 spraying, in the same manner, and this spraying will usu- 

 ally be found profitable where it can conveniently be made. 



Spray next (whether the last, or fourth, spraying is 

 given or not) about three weeks after the blossoms fall. It 

 is at this time that the apple worms are hatching and some 

 will be killed by the poison on the foliage, and it is this 

 spraying which most effectually controls the "brown spot" 

 of the Baldwin, and other varieties. 



Further sprayings will not usually be necessary unless 

 the fruit be attacked by bitter rot, when two more spray- 

 ings at intervals of ten days should be given. 



If but two sprayings can be given, spray just after the 

 blossoms drop and three weeks later, but apply the two 

 sprayings before the blossoms open if possible. 



Fig. 34.— Cal 

 for 



