Pherocon AM trapping and the “Whole plant count” method — A comparison of two sampling techniques to estimate the WCR adult densities in Central Europe

Bažok, Renata; Sivčev, Ivan; Kos, Tomislav; Barčić, Jasminka Igrc; Kiss, J.; Janković, Saša

doi:10.1556/crc.39.2011.2.14

Cited by 8 publications

(15 citation statements)

References 10 publications

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“…Pherocon AM trapping and visual counting are two commonly used methods for identifying the maize fields in the USA that contain the number of adult WCR sufficient to cause economic root damage by larvae in the following year. The most appropriate period for sampling was during the first half of August (Bažok et al 2011). According to our results, during the first half of August almost the whole WCR population did not move from its place of emergence, and the real migration to new plots (fields) started after August 19.…”

Section: Discussionmentioning

confidence: 70%

Seasonal dispersal of the Western corn rootworm (Diabrotica virgifera virgifera) adults in Bt and non-Bt maize fields

Cagáň¹,

Roşca²

2012

Plant Prot. Sci.

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Section: Discussionmentioning

confidence: 70%

Seasonal dispersal of the Western corn rootworm (Diabrotica virgifera virgifera) adults in Bt and non-Bt maize fields

Cagáň¹,

Roşca²

2012

Plant Prot. Sci.

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“…Prema Bažok et al [4] tjedni ulov od 40 odraslih odgovara jednoj zlatici utvrđenoj vizualno po biljci. Pod pretpostavkom da je norma sjetve 70.000 biljaka po hektaru tjedni ulov od 40 odraslih s pedesetpostotnim udjelom ženki na mamcu odgovara 35.000 ženki po polju.…”

Section: Raspravaunclassified

ESTIMATION OF WESTERN CORN ROOTWORM (Diabrotica virgifera virgifera LeConte) EGG ABUNDANCE BASED ON THE PREVIOUS YEAR ADULT CAPTURE

Kos¹,

Bažok²,

Varga³

et al. 2013

JCEA

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“…Bažok et al. () suggested that the commonly used methods of visual counting and PhAM sampling are also effective to estimate the population densities of WCR in the Central European region. Hein and Tollefson () suggested that the PhAM traps should be installed during the last 3 weeks of August.…”

Section: Introductionmentioning

confidence: 99%

“…Bažok et al. ). In general, the ETs used by Midwestern USA farmers are one beetle/plant for whole‐plant counts or the capture of 40 beetles/PhAM/week.…”

Section: Introductionmentioning

confidence: 99%

“…Hein and Tollefson (1985) demonstrated that the PhAM was as effective as a practical tool for sampling rootworm because of its compactness, easy installation and use, commercial availability and low cost. Bažok et al (2011) suggested that the commonly used methods of visual counting and PhAM sampling are also effective to estimate the population densities of WCR in the Central European region. Hein and Tollefson (1985) suggested that the PhAM traps should be installed during the last 3 weeks of August.…”

Section: Introductionmentioning

confidence: 99%

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Western corn rootworm adult captures as a tool for the larval damage prediction in continuous maize

Kos

Bažok

Gunjača

et al. 2012

J Applied Entomology

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Continuous maize production in Croatia and Central Europe is at serious risk from western corn rootworm (WCR) (Diabrotica virgifera virgifera, LeConte) activity. When alternatives to sowing continuous are not feasible, farmers will need a reliable tool that will allow them to choose fields for continuous cultivation. The decision could be based on assessing the adult populations in fields from the previous year. Non-baited yellow sticky traps [Pherocon AM (PhAM)] could be utilized as a practical tool for sampling. The main objective of this study was to determine which WCR adult population data collected by PhAM traps could most reliably predict the subsequent WCR larval population and damage. Adult WCR population densities in 30 cornfields were determined weekly over a 74 day period each year (24th to 35th week) from 2006 to 2009. In addition to root damage and plant lodging measurements, soil and root sampling were conducted to measure the WCR larval population in continuous maize fields. Larval infestation is best predicted by maximal weekly capture (MWC) but, root damage is better predicted by capture of adults in the 31st week of previous year. For the prediction of plant lodging, MWC, average daily capture (ADC) and the capture of adults in 29th week were found to be equivalent. To save money and to shorten the sampling period, farmers should employ PhAM traps between the 29th and 32nd week. The estimated WCR adult capture that could cause significant larval infestation is ! 22 adults/trap in the 29th week. Significant future root damage is predicted if ! 41 adults/trap are captured in the 31st week. Plant lodging is predicted if ! 36 adults/trap (for 90% of upright plants) or ! 32 adults/trap (for 10% of partially lodged plants) are captured in 29th week. Findings will help to develop economic threshold models and improved decision-making for WCR management.

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Pherocon AM trapping and the “Whole plant count” method — A comparison of two sampling techniques to estimate the WCR adult densities in Central Europe

Cited by 8 publications

References 10 publications

Seasonal dispersal of the Western corn rootworm (Diabrotica virgifera virgifera) adults in Bt and non-Bt maize fields

Seasonal dispersal of the Western corn rootworm (Diabrotica virgifera virgifera) adults in Bt and non-Bt maize fields

ESTIMATION OF WESTERN CORN ROOTWORM (Diabrotica virgifera virgifera LeConte) EGG ABUNDANCE BASED ON THE PREVIOUS YEAR ADULT CAPTURE

Western corn rootworm adult captures as a tool for the larval damage prediction in continuous maize

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