... found in the field In most cases, only the upper parts of the plants showed slight damage The chemical control proved to be effective Assessment of non-target organisms Maize plants: The data ... 7,879 of them were found on the Bt plots and 5,083 on the control plots With the exception of one field, more ground beetles per trap and per week were found on the Bt plot However, this was ... assessed on the Bt plots, since a maximum infestation of 0.02 larvae per plant can be expected due to varietal impurity of around percent Assessment of non-target organisms Maize plants: Three maize...