Articles
MONITORING INSECT AND PEST DAMAGE IN PECAN IN ARKANSAS
Article number
1070_17
Pages
151 – 157
Language
English
Abstract
The numbers of brown stink bugs [Euschistus servus (Say)] per baited yellow pyramid trap were compared across pecan groves [Carya illinoinensis (Wangenh.) K. Koch] as part of a survey to establish benchmarks in Arkansas.
After mid-June 2012, biweekly counts were made from three pyramid traps set on ground at four sides and the center in each of seven pecan groves that differed in adjacent crops.
Each trap was baited with Euschistus aggregation pheromone and captured mostly brown stink bugs, Euschistus servus. The Humphrey, AR grove had soybeans planted along 50% of the perimeter and from late-August to mid-October had higher brown stink bug trap counts and percentage nut damage than recorded in the other six groves.
A grove in Blackwell, AR had a significant trap location effect with greater counts of brown stink bugs in the center than perimeter locations on five sample dates.
The perimeter of this grove was cropped as follows: 50% fallow or pasture; 30% in rice, 20% in soybean.
Trap location had less effect on stink bug trap catch in the other six groves.
Percentage damage by stink bug, pecan nut casebearer [Acrobasis nuxvorella (Neunzig)], hickory shuckworm [Cydia caryana (Fitch)] and pecan weevil [Curculio caryae (Horn)] are reported for these seven groves in 2012. In the future, we will relate biweekly changes in nut damage to counts of stink bugs both in the pecan canopy and in ground pyramid traps and describe how stink bug damage differs among pecan cultivars at different phenological stages.
After mid-June 2012, biweekly counts were made from three pyramid traps set on ground at four sides and the center in each of seven pecan groves that differed in adjacent crops.
Each trap was baited with Euschistus aggregation pheromone and captured mostly brown stink bugs, Euschistus servus. The Humphrey, AR grove had soybeans planted along 50% of the perimeter and from late-August to mid-October had higher brown stink bug trap counts and percentage nut damage than recorded in the other six groves.
A grove in Blackwell, AR had a significant trap location effect with greater counts of brown stink bugs in the center than perimeter locations on five sample dates.
The perimeter of this grove was cropped as follows: 50% fallow or pasture; 30% in rice, 20% in soybean.
Trap location had less effect on stink bug trap catch in the other six groves.
Percentage damage by stink bug, pecan nut casebearer [Acrobasis nuxvorella (Neunzig)], hickory shuckworm [Cydia caryana (Fitch)] and pecan weevil [Curculio caryae (Horn)] are reported for these seven groves in 2012. In the future, we will relate biweekly changes in nut damage to counts of stink bugs both in the pecan canopy and in ground pyramid traps and describe how stink bug damage differs among pecan cultivars at different phenological stages.
Authors
B. Cowell, D.T. Johnson, R. Mizell, M.E. Garcia
Keywords
pheromone trap, brown stink bug, Carya illinoinensis
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