Kathleen Lemanski

• Dr. rer. nat.
• PostDoc Position at Julius Kühn-Institut

Biological control is a recognized and well-implemented strategy to protect crops from pests and diseases, and there is an urgent need to expand biocontrol-based crop protection further, also in Germany. Specially, the use of invertebrate biological control agents (IBCA) is considered as a fundamental method in integrated pest management and organi...

In a pot experiment, we investigated synergistic interaction of N and P fertilisation on barley biomass (Hordeum vulgare) on both shoot and root level with the aim to determine whether N-P interaction would be the same for all levels of N and P fertilisation. We further aimed to determine whether there was a critical level of N and/or P fertilisati...

Non-native invasive arthropod species threaten biodiversity and food security worldwide, resulting in substantial economic, environmental, social and cultural costs. Classical biological control (CBC) is regarded as a cost-effective component of integrated pest management programmes to manage invasive arthropod pests sustainably. However, CBC progr...

Soil microbial C:N:P stoichiometry and microbial maintenance respiration (i.e. metabolic quotient, qCO 2 ) were monitored along a nutrient gradient in soils from a 52-year space-for-time chronosequence of reclaimed agricultural land after brown-coal mining. Land reclamation produced loess soils of initially low (0.2%) SOC. Consecutive agricultural...

Aim Depending on the availability and stoichiometry of nutrients in soil, microbes and plants can compete for the same resources. In this study we aimed to test how microbial nutrient limitation in agricultural systems can be linked to fertilizer regimes and sugar beet yield. Methods We measured the dynamics of microbial growth responses by monito...

Roots and root-derived C compounds are increasingly recognised as important resources for soil animal food webs. We used (13)C-labelled glucose as a model C compound representing root exudates to follow the incorporation of root-derived C into the soil animal food web of a temperate grassland over a period of 52 weeks. We investigated variations in...

In permanent grassland the influence of NPK fertilizer addition and sward composition (proportion of plant functional groups) on soil microorganisms and the incorporation of 13C labelled glucose into microbial tissue were studied for 52 weeks. Microbial biomass was analysed by chloroform fumigation–extraction (CFE), soil microbial community structu...

In Europe, grasslands are among the most important agricultural systems which are subject to continuous management intensification, potentially threatening ecosystem services. We analysed the impact of management of permanent grassland, i.e. fertilizer addition (-NPK and +NPK), cutting frequency (one and three cuts per year) and herbicide applicati...