that they were in 193S. European red nite is picking up and this 

 dry v/eather is ideal for them. Its control is a difficult problem. 

 Suinraer oil (3/4'/') is the most effective spray but cannot be used 

 on a heavy sulfur deposit and nay cive a dull finish to fruit if 

 applied in August. Rotenone sprays kill the active stages but 

 not eggs, and also kill beneficial insects and spiders which are 

 more helpful in controlling late red mite infestations than they 

 are generally given credit for. Soap, '4 pounds dry or 10 pounds 

 of 40/& anhydrous liquid in 100 gallons, seens good but has given 

 both satisfactory and unsatisfactory results. It is safer than 

 oil, hovvever." 



There are plenty of apple rcaggot flies in sone orchards 

 to cause heavy infestation, as evidenced by the taking of 23 flies 

 fron a small cage in eastern Llassachusetts on July 2A-. This rep- 

 resented about a week's emergence from an area of approximately 

 4 souare feet where some maggot infested apples were dumped last 

 fall. 



The absence of rain between July 10 and July 25 in most 

 parts of the state resulted in more than the usual amount of pro- 

 tection from the Third Cover spray. The July rainfall record in 

 Aniherst up to July 31 is as follows: The nuiviber in parenthesis- 

 indicates inches of rainfall. July 8 (.17), 14 (.76), 27 (.14), 

 28 (.07), 29 (.64), 30 (.18).- Total 1.96 inches, or less than 

 half the norraal July rainfall, 4.1 inches. 



A Few Facts About Oriental Fruit I.Ioth 



Peach growers will be interested in these items con- 

 cerning the behavior of the Oriental fruit moth, furnished by 

 A. I. Bourne. 



The moths begin to emerge about the middle of Kay and 

 continue until about the middle of June. There are three broods 

 and sometimes a partial fourth during the season. The life 

 cycle in mid-sur.:mer reojiires 32 days. The first brood is re- 

 sponsible for injury in the tips of the twigs. It attacks the 

 twigs alone. The second brood attacks twigs and fruit. The 

 third brood attacks the fruit alone. 



First brood larvae feed from late May through June. 

 Second brood larvae feed from early July to mid-August ( som.e 

 hibernate). Third brood larvae begin feeding about the middle 

 of August (most hibernate). If a fourth brood appears, the lar- 

 vae feed from September on. 



I^oths begin laying eggs a few days after emerging and 

 lay for 7 to 10 days. They are active tov/ard dusk on warm days, 

 m.uch the sai-ae as codling m.oth. Each f empale lays from 36 to 50 

 eggs, occasionally up to 70 eggs. The eggs hatch in 4 to 6 days 

 if warm and 7 to 14 days if cool. In late season the tine is 

 about 21 days. The pupal stage recuires only ?. to 4 days in hot 

 weather (1st and 2nd brood) and up to 11 days later. 



The adult life of the I'acrocontrus parasite is about 

 26 days while the adult life of the Oriental fruit moth is slight- 

 ly longer. Lov; temperatures inhibit the activity of the parasites. 

 Below 60 degrees F, they are inactive. From 65 to 80 degrees 

 they are active in parasitizing the Oriental fruit moth. 



