Int. J. Agr. & Agri. R. International Journal of Agronomy and Agricultural Research (IJAAR) ISSN: 2223-7054 (Print) Vol. 2, No. 1, p. 35-39, 2012 http://www.innspub.net RESEARCH PAPER OPEN ACCESS The effects of the thermal and pluviometric regime over the adults reserve from the soil of the colorado beetle (Leptinotarsa decemlineata Say) in the climatic conditions from Suceava area Ioan Gontariu 1* , Ioan-Catalin Enea 2 , Amelia Buculei 3 , Ioana Rebenciuc 4 1 Faculty of Food Engineering, Stefan cel Mare University, Street. Universitatii no. 13, 720229, Suceava, Romania 2 Agricultural Research and Development Station of Suceava, B-dul 1 Decembrie 1918, 15, Suceava, Romania 3 Faculty of Food Engineering, Stefan cel Mare University, Street. Universitatii no. 13, 720229, Suceava, Romania 4 Faculty of Food Engineering, Stefan cel Mare University, Street. Universitatii no. 13, 720229, Suceava, Romania Received: 11December 2011 Revised: 17 December 2011 Accepted: 19 December 2011 Key words: Soil surveys, biological reserve, low temperatures, losses. Abstract In our experiment we observe the autumn and spring surveys. After these surveys we can determine the way in which has evolved the pest during winter and we can quantify the biological reserve from the soil. There were made some surveys on the lots cultivated with corn, barley, autumn wheat and spring mash and potato cultures. The results of the surveys show that in the analyzed winters only 29% were registered significant losses of the hibernate adults. The homogeneity of the values could suggest that during the less cold winters, the biological reserve could be diminished with approximately half from the number of the hibernated adults from the potato cultivated field. * Corresponding Author: Ioan Gontariu ioang@fia.usv.ro Gontariu et al. Page 35