To determine the efficacy of the product against the western corn root worm, since the spring of 2007 was organised an experimental field in the area Tărtăria, Alba County (Romania). The experiments were made according to the experimental technique. It should be noted that it was located in an area where the pest has been reported since 2002, under monoculture. Sowing date varied from year to year depending on climatic factors and weather conditions. In 2008 sowing took place on April 21, May 1 in 2009, and April 30 in 2010.  As a result of research carried out in 2008-2010 can be seen  that among the four products used in preventing and fighting Diabrotica virgifera virgifera species larvae, we obtained best results with products applied to the seed. In the  experimental period, the larvae attack symptoms were manifested by the appearance of "goose neck", in control plot, the attack frequency being about 15.46% in 2008, 25.33% in 2009 and 26,88% in 2010. Biobit bioproduct applied only to the seed reduced the incidence of attack to 5.76% in 2008 (about 63% less compared to the control, 8.12% in 2009 (about 68% less compared to the control) and 6.23% in 2010. Of the four products used in preventing and fighting Diabrotica virgifera virgifera larvae species, we obtained best results with products applied to the seed. The best results in the fight against larvae and adults were obtained with the bioproduct Biobit  applied to seed and vegetation. The research was supported by the Research Program PD-PN II, Contract no. 186/2010.

pest, western corn root worm, biological control, bioproduct, corn

Presentation: oral