ANALYSIS METHODS FOR IDENTIFICASION OF RED ACARIAN OF TREES PANONYCHUS ULMI KOCK IN THE AUTUMN OF THE YEAR 2009 FROM A FRUIT-GROWING FARM IN THE SIBIU COUNTY PUBLISHEDCristina Stanca-Moise, Maria Tănase
The present work represents a study about the biological reserve of the red spider Panonychus ulmi Koch accomplished to a private fruit-growing farm from the county Sibiu, from a surface of 30 tchick. In order to recomand a treatment against this spyder, we accomplished researches regarding the digital density of the winter eggs layng, on the unit of the surface/ branches on lots from the farm. The reserches regarding the digital density of the winter eggs layng pest, were made after the prelevation of 10 cm branches for an easier analize with the maginifing glass binocular. The red acarian Panonychus ulmi Koch, is a pholyphagic species frequently pointing out the in orchards fruit-growing and winegrowing, species of dendrologic plant. Presents 5-6 the generation on year depending on the climatic conditions. Hibernates in the stage of egg, on branches, around his buds in the cracks barks. The haching of the larvs from the hibernante eggs is in progress when is exceeded the inferior development the shold 8ºC and is achieved a sum of temperature of 20-50ºC. The female has the oval body the curved dorsal and when it appears has a brown color. With the time becomes brown to red. The whole body is covered with wintergreens, the one disposed on the dorsal part by-path in number of 26, thread on warts of white color.the body length is variating from 0,3-to 0-5 mm. The male has the oblong body that sharpness on the posterior part. He is less than female. As much as the female the male form male 4 couples of feet. The egg is cepiform, striate dorsal, he is foreseed with a fine pedicel. The winter one has a red shining color, and a diameter of 0,15 mm. The summer one has a yellow color. The larva is red, with three pairs of feet, with a length of 0, 1-0 1-0 2MM. Depending on the attack degree of the prove of analize we recommended the fitosanitare measures of prevention and struggle harmful.
Panonychus ulmi Koch; fruits farm; prevention and control