Naslov
Comparison of the Pherocon AM trap and "The Whole Plant Count" data for estimating WCR adult densities in two regions in Central Europe

Autori
Bažok, Renata ; Sivčev, Ivan ; Igrc Barčić, Jasminka ; Kos, Tomislav ; Kiss Jozsef

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
23rd IWGO Conference& 2nd International Conference of Diabrotica Genetics / Kuhlman, Urlich - München : IOBC(IWGO, 2009, 13-13

Skup
23rd IWGO Conference& 2nd International Conference of Diabrotica Genetics

Mjesto i datum
München, Njemačka, 05.04.2009. - 08.04.2009

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Corn; Pherocon AM; the whole plant count; western corn rootworm

Sažetak
Pherocon AM (PhAM) trapping and visual counting are widely used methods for identifying corn fields with economic levels of western corn rootworm adults in USA, . The aim of our investigation was to compare the adult WCR data obtained by PhAM trapping and by “ The whole plant count” in Croatia and Serbia. The investigations were carried in 2006 on 38 fields (Croatia) and on 22 fields (Serbia). Three to six PhAM traps were established in each corn field average size form 0.5 and 4 ha. Traps were inspected every two weeks in the period between July 15th and August 30. Visual count was conducted the same day as the trap inspection. Five pairs of corn plants were scouted three times (every 15 day) in Croatia, while in Serbia it was done once. Adult densities on PhAM traps were correlated to adult densities on the whole plant. In Croatia significant (P=0.0001) medium positive correlation (r2 =0.43) was established. In Serbia significant (P= 0.0001) strong positive correlation (r2 =0.87) was established. The regression curves were linear with equation y=0, 0226x + 0, 107 for Croatia and y = 0, 022x - 0, 03 in Serbia. Visually determined 1 adult/plant corresponds to 40 (in Croatia) and to 50 (in Serbia) adults/trap/week which is similar or somewhat higher than already established and used in the USA. Comparison of PhAM trapping and visual” whole plant count” method through statistical analyses showed that there is strong correlation between them. It means that both methods can be used with equal value in population estimation at WCR densities experienced in our region

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija)

POVEZANOST RADA