THE INFLUENCE OF ECOLOGICAL FACTORS FROM NORTHWESTERN PART OF ROMANIA ON DIABROTICA VIRGIFERA VIRGIFERA LE CONTE (WESTERN ROOT CORN WORM) SPECIES
Journal Title: Natural Resources and Sustainable Development - Year 2011, Vol 1, Issue 1
Abstract
Western corn root warm (Diabrotica virgifera virgifera Le Conte) over 10 years since it occurrence in Romania it is considered at this hour an very important pest for the maize which produce economical damage at regional level. Increasing of pest adults population year by year can be evaluated through a monitoring system. This paper presents the results regarding of pest evolution in correlation with main ecological factors between 2009-2011 at Agricultural Research and Development Station Oradea. The frequency of adults was variated depending on the year of sowing and the ecological condition. The maximum number of captures were between 175 and 223 adults / trap/day registered in the first decade of July with an average between 28,5 and 30,51 but with a large variability. Analysis of correlations between daily dynamics of adults and ecological factor show significant positive correlation with air temperature and soil temperature and negative correlation with air humidity. Significant and positive correlation were registered with quantity of rainfalls in 2009 and 2010 and weak signification were registered in 21011 when rainfalls from July were over multiannual average. In conclusion we can notice that when rainfalls and humidity are high, the number of adults decrease because they are favorized by an high air temperature and short rainfalls.
Authors and Affiliations
Cornelia Ciobanu, Gheorghe Ciobanu, Cornel Domuta, Maria Sandor, Cristian Domuta, Ramona Albu, Adrian Vuscan, Constantin Popov
Keywords
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- EP ID EP272111
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