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Bogs were scouted weekly by the IPM coordinator and summer scouts, from 

 the beginninR of May until September. This scouting involved monitoring insect 

 pests with the use of sweep nets, pheromone traps, and vine and berry samples. 

 Diseases and weed pests were also identified and monitored. Growers were 

 notified via telephone or in person regarding the pest status of their bogs and 

 recommendations for control. Copies of weekly reports were given to growers. 

 In September, growers received graphs and reports for cranberry fruitworm and 

 pests which were monitored with pheromone traps. Also in September, bogs were 

 sampled for weed problems to aid in making spring and fall herbicide 

 recommendations. Berry and vine samples were collected to determine end-of- 

 season damage (particularly upright dieback, berry rot, cranberry fruitworm, 

 and cranberry tipworm damage). 



Insect monitoring is related to host plant phenology. The following 

 pests are most prevalent in spring and early summer and are damaging to the 

 vine uprights. They are leaf feeders; however, they are most destructive when 

 they damage developing buds. Sampling with sweep nets (25 sweeps/acre) was 

 conducted weekly, from mid-May through the end of bloom. 



gypsy moth blossom worm black headed fireworm 



Sparganothis fruitworm cranberry sawfly false armyworm 

 yellow headed fireworm cranberry weevil spanworms 



The adult flight activity of the following pests were monitored with the 

 aid of pheromone traps. Traps were set out in late May and were changed and 

 counted weekly, until early to mid August. 



cranberry girdler 

 Sparganothis fruitworm 

 blackheaded fireworm 



Southern red mite is a potential pest throughout the growing season, 

 although its populations are highest during the summer. It was monitored by 

 collecting and inspecting 10 to 15 uprights/acre for eggs, immatures, adults, 

 and damage. Large populations may also be seen during sweeping. Cranberry 

 tipworm is a potential pest during most of the growing season, damaging the 

 tips of uprights. Uprights were collected and inspected in the laboratory for 

 the presence of eggs, larvae, pupae, and damage. Following the first two 

 cranberry fruitworm sprays, which are timed depending on when the plant is 50% 

 out-of-bloom, 50 berries/acre were collected every five to seven days and 

 inspected for the presence of viable cranberry fruitworm eggs until there was 

 no longer the danger that viable eggs were being deposited. The percentage of 

 parasitized eggs was also determined at this time. 



Just prior to harvest, 50 berries/acre and 10 vines/acre were collected 

 and brought into the laboratory for inspection. Insect, disease, and 

 mechanical damage were identified. 



This article is intended to be an introduction to the Cranberry IPM 

 program, some of the cranberry pests, and the procedures used during pest 

 monitoring. More detailed results will be presented in future issues. 



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