ANALYSIS OF CORRELATIONS BETWEEN WCR ADULTS RECORDED AT DIFFERENT ALTITUDES AND CLIMATE FACTORS PUBLISHED

Ioana Grozea, Alin Cărăbeţ, Ramona Ştef, Ana Maria Vîrteiu, Codruţa Chiş, Sven Dinnesen
Studies covered the topic of this paper continue work started in 2008 in western part of Romania, actually refers to comparative studies between different localities. This approach is original and is the subject of research project. During 2010, as well as during previous year, the monitoring of Diabrotica virgifera virgifera (WCR) was done continuing the implementation of a usual protocol. For establish of adults number were used Hungarian pheromone traps (Csalomon ® Diabrotica v.v. pane type /2pieces). The traps were installed from June to September, in three repetitions (Trap1, Trap2, Trap3/place). The frequency of Diabrotica virgifera virgifera Le Conte adults was based on readings directly in fields, in 19 localities from 8 counties (Timiş, Arad, Hunedoara, Bihor, Cluj, Satu Mare, Sălaj, Caraş Severin, Alba, Mureş) situated in western part of Romania. For installing of traps we used the common methods and for finding the location the GPS was used. The researches were made in conventionally maize, untreated against target pest. The movement to experimental fields was made used the car from Entomology and Zoology Agricultural of BUASVMT. The air temperature, soil temperature, relative humidity and moisture constituted ecological factors from basis of correlations between adults’ number and climatic conditions from different altitudes. The data were taken from Weather Stations associated each county studied. From analyzing the data obtained (averages of adults captures) in accordance with climatic factors apparent significance differences. After analyzing correlations with climatic factors reveals positive correlations compared with air temperature (r=0,324, r=0,005) soil temperature (r=0,373, p=0,015) and negative correlations compared with humidity (r=0,279, p=0,015). In conclusion, registered values of adults captured increase when humidity is low and high temperature or decrease if the humidity increases and temperature decreases.We acknowledge the Ministery Education financed this work within the framework of PN-II-ID-PCE-2007-1/RO project and Weather Stations from each county taken in study.
WCR, adult, correlation, captures, humidity, temperature, maize
Presentation: oral

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