Abstract
The Effects of Water Extracts from Lemon Balm on Pea Leaf Weevil and Black Bean Aphid Behaviour
Highlights
Application of chemical means of pest control is increasingly contributing to the emergence of pest resistance to the active substances contained in these compounds, resulting in their reduced effectiveness [Hansen 2008, Pimentel et al 2009, Wawrzyniak et al 2015]
The extracts from dry matter of Melissa officinalis L. were prepared at concentration assumed conventionally as 2%, 5% and 10% and at the concentrations of 10%, 20% and 30% for fresh matter
The extracts prepared from dry matter of the lemon balm at the two highest concentrations (5% and 10%) at all dates of observations, led to a significant reduction in the feeding by males of pea leaf weevil (Table 1)
Summary
Application of chemical means of pest control is increasingly contributing to the emergence of pest resistance to the active substances contained in these compounds, resulting in their reduced effectiveness [Hansen 2008, Pimentel et al 2009, Wawrzyniak et al 2015]. The odour of a host plant could be the principal factor determining their behaviour and the possibility to locate their host plant For this reason, the substances which prevent the identification of the host plant by the pest, or have a deterrent effect on the latter are increasingly often applied in plant protection [Korczyński and Koźmiński 2007]
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