ISSN 1392-3196
Zemdirbyste-Agriculture, vol. 100, No. 1 (2013), p. 99–104
UDK  633.584.3:632.951:631.826 / DOI 10.13080/z-a.2013.100.013

Evaluation of damage and control of cream-bordered green pea (Earias chlorana Hübner) caterpillars in a 4-year old plantation of common willow (Salix viminalis L.)



The aim of the current study was to assess the degree of damage caused by the cream-bordered green pea (Earias chlorana Hübner), belonging to the family Noctuidae, as well as evaluate the potential control of this pest in a 4-year old plantation of common willow (Salix viminalis L.). Analyses were conducted in the years 2010 and 2011 at the Research and Education Centre Gorzyń, Złotniki Branch, Poznań University of Life Sciences. The occurrence of cream-bordered green pea on clone 1100 of common willow (Salix viminalis L.) was evaluated in two unifactorial experiments. The aim of the first experiment was to assess the residual effect of sewage sludge applied in the year of plantation establishment, while the second experiment analysed the effect of insecticide applications. Analysis of variance did not show any significant residual effect of sewage sludge on the proportion of shoots damaged by the pest, while the application of chemicals significantly limited the volume of damage caused by cream-bordered green pea caterpillars. In both 2010 and 2011, the greatest efficacy in the reduction of the damaged shoots by the cream-bordered green pea (87.2% and 87.8%, respectively) was obtained after the application of esfenvalerate. The highest yield increment in comparison to the control was recorded in 2010 (6.9 t ha-1, 32.7%).

Key words: Earias chlorana, insecticide application, Salix viminalis, sewage sludge.

Full text: 100_1_str13.pdf