RESEARCH ON THE ATTACK CAUSED BY SPECIES OF THE GENUS EURYGASTER IN SOME WHEAT CROPS IN IASI COUNTY

Abstract

Observations and analyses on the attack produced by species of the genus Eurygaster on wheat crops. from 10 nearby localities in Iasi County. To apply the research methodology, laboratory analyses were carried out on wheat samples (15 in number) that were randomly taken from different points of the lots at various depths. From the samples selected from all 10 locations in 2020, a very high incidence of the degree of attack could be observed, practically all the grains showed traces of the insect attack, with the exception of the samples from the localities of Mosna, Tutora, Gorban and Cozmesti where variable quantities of unaffected grains were recorded. In 2021, there was a significant increase in the quantity of grains analyzed compared to the previous year. In the samples analyzed in 2022, the frequency of affected grains showed a decrease as well as a different distribution of the pest attack. This trend of decreasing attack frequency suggests a possible efficiency of the applied control measures or less favorable climatic conditions for the development of the pest.