-8- 



quart of Staley Insecticide Bait #2 per 100 gallons water per acre in one plot, 

 and Malathion plus a quart of Bait #7 in the other on July lA, July 24, and 

 August 4. 



Flies trapped in the unsprayed area average 125 per trap during the period 

 of July 18 to August 28, compared to 29 per trap in the bait-sprayed area. Quart 

 samples examined for maggots in early August showed 48 maggots per quart in the 

 check area and per quart in the Bait #2, and one per quart in the Bait #7 

 sprayed areas respectively. 



This is not meant to condemn the present spray chart recommendation which 

 has given good control when applied on time, as indicated by results in 1955 

 and results in New Jersey. Where adverse conditions make dusting on time from 

 the air impossible, this bait spray application will definitely do the job. We 

 will be trying further refinement of the bait spray as a concentrate applied by 

 airplane, helicopter, or ground concentrate spray rig. 



Other pests frequently encountered and giving trouble in 1958 were the 

 cranberry and the cherry fruitworms in several fields, currant fruit weevil in 

 one field, and a small amount of trouble from plum curculio and cranberry weevil 

 in several fields. Japanese beetle was less troublesome than usual because of 

 cool, wet weather in 1958 following the dry season of 1957, but look out in 1959 

 because survival of what eggs were layed will be high. 



- — William E. Toralinson, Jr. 



I I I I I I I I I I I I I I I I 



ORCHARD PEST CONTROL BY AIR DUSTING 



There are some distinct disadvantages to air dusting. Perhaps some of the 

 following are only precautions. At any rate, a grower who is considering the use 

 of the airplane for orchard pest control should go into the practice with a full 

 knowledge of the following: 



1, Very capable pilots who also understand your pest control problems are a 

 necessity. They must have the courage and ability to fly at treetop level, 

 fly early and late, and fly during times of bad weather. A locally owned, 

 fully financed and reputable operation will greatly insure grower satisfactionT' 



2, Dust schedules from a materials standpoint are more expensive because dusts 

 themselves are higher in cost and more applications may be needed, especially 

 for insect control. This factor is usually easily offset by some of the 

 advantages we have already covered, 



3, The weather is a factor. Good weather forecasting is essential to help you 

 plan your scheduling and to help the operators plan their work. Except for 

 low ceilings caused by fog, I do not believe adverse weather conditions have 

 been a limiting factor in air dusting any more than with ground spray semi- 

 concentrate methods in our state. 



4, A good air operator should have standby plane equipment in the event of plane 

 failure or accident. You as an orchardist might well keep a spray or dust rig 

 in standby status at least until your air operator has proved to be reliable. 



