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Paper presents results of studies on the impact of group effect and food kinds upon the morphofunctional status of Dendrolimus pini L. caterpillars. Significant impact of group effect was found, especially in older instars of caterpillars (L3 and L4), and a favourable influence of using a more appropriate food of two years old needles during spring feeding and one year needles during autumnal feeding upon caterpillars. No significant differences were found in the morphofunctional status of caterpillars fed with the foliage of Scots pines coming from stands in the II and VI age-classes and with I and III site indices.
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Projects co-financed by:
Operational Program Digital Poland, 2014-2020, Measure 2.3: Digital accessibility and usefulness of public sector information; funds from the European Regional Development Fund and national co-financing from the state budget.