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Number of results: 6
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Abstract

Czy system rolnictwa integrowanego, harmonijnie łączący postęp techniczny i dbałość o środowisko w uprawie roślin, sprawi, że produkty rolne będą nie tylko smaczne, ale i zdrowe?
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Małgorzata Jędryczka
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Abstract

The experiment consisted in monitoring the count of moulds and three selected Trichoderma sp. isolates (T1 - Trichoderma atroviride, T2 - Trichoderma harzianum, T3 - Trichoderma harzianum) in vegetable (onion and tomato) waste composted with additives (straw, pig manure). Additionally, the aim of the study was to determine the type of interaction occurring between autochthonous fungi isolated from composts after the end of the thermophilic phase and Trichoderma sp. strains applied in the experiment. Number of microorganisms was determined by the plate method, next the identification was confirmed. The rating scale developed by Mańka was used to determine the type of interactions occurring between microorganisms. The greatest count of moulds in onion waste composts was noted in the object which had simultaneously been inoculated with two strains T1 - T. atroviride and T3 - T. harzianum. The greatest count of moulds was noted in the tomato waste composts inoculated with T2 - T. harzianum strain. Microscope identification revealed that Penicillum sp., Rhizopus sp., Alternaria sp. and Mucor sp. strains were predominant in onion waste composts. In tomato waste composts Penicillium was the predominant genus, followed by Rhizopus. The test of antagonism revealed the inhibitory effect of Trichoderma isolates on most autochthonous strains of moulds. Tomato waste composts proved to be better substrates for the growth and development of Trichoderma sp. isolates. The results of the study show that vegetable waste can be used in agriculture as carriers of antagonistic microorganisms.

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Authors and Affiliations

Agnieszka Wolna-Maruwka
Tomasz Piechota
Alicja Niewiadomska
Jacek Dach
Magdalena Szczech
Małgorzata Jędryczka
Agnieszka A. Pilarska
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Abstract

Spitsbergen is the largest island in the Svalbard Archipelago (Norway) that has been permanently populated. The harsh Arctic climate prevents development of large vascular plants such as trees. A two-year aerobiological survey was conducted within the framework of two consecutive polar expeditions (2014 and 2015) in Spitsbergen (Calypsobyen, Bellsund). The air quality was measured continuously from June/July to August using a 7-day volumetric air sampler, Tauber trap and moss specimens. Collected air samples and gravimetric pollen deposits were processed following transfer to sterile laboratory conditions and analyzed with the aid of light microscopy. Days when pine pollen grains were detected in the air were selected for further analysis. Clusters of back-trajectories, computed using the Hybrid Single Particle Lagrangian Integrated Trajectory model in combination with ArcGIS software as well as the Flextra trajectory model, showed the movement of air masses to the sampling location at Hornsund, and thus indicated the likely origin of pollen grains. The GlobCover 2009 and CORINE Land Cover 2012 datasets were employed to establish the distribution of coniferous forests in the areas of interest. Conclusions were drawn based on the analyses of the circulation of air masses, using visualization of global weather conditions forecast to supercomputers. For the first time we have demonstrated that pine pollen grains occurring in pine-free Spitsbergen, could originate from numerous locations, including Scandinavia, Iceland, Siberia and northern Canada. Pollen grains were transported via air masses for distances exceeding ~2000 km. Both air samples and gravimetric pollen deposits revealed the same pattern of Pinus pollen distribution.
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Authors and Affiliations

Małgorzata Jędryczka
1
ORCID: ORCID
Beata Żuraw
2
ORCID: ORCID
Piotr Zagórski
3
Jan Rodzik
3
Karolina Mędrek
3
Irena Agnieszka Pidek
3
ORCID: ORCID
Weronika Haratym
4
ORCID: ORCID
Joanna Kaczmarek
1
ORCID: ORCID
Magdalena Sadyś
5
ORCID: ORCID

  1. Institute of Plant Genetics, Polish Academy of Science, Strzeszyńska 34, 60-479 Poznań, Poland
  2. Department of Hydrobiology and Protection of Ecosystems, University of Life Sciences in Lublin, Dobrzańskiego 37, 20-295 Lublin, Poland
  3. Institute of Earth and Environmental Sciences, Maria Curie-Skłodowska University, al. Kraśnicka 2D, 20-718 Lublin, Poland
  4. Paderewski Private Grammar School, Symfoniczna 1, 20-853 Lublin, Poland
  5. Rothamsted Research, West Common, Harpenden, AL5 2JQ, UK

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