Zobrazeno 1 - 10
of 31
pro vyhledávání: '"Petr Mráz"'
Autor:
Aneta Bokšová, Jan Kazda, Martina Stejskalová, Tomáš Šubrt, Leoš Uttl, Petr Mráz, Jan Bartoška
Publikováno v:
Plant, Soil and Environment, Vol 67, Iss 6, Pp 343-352 (2021)
The honey bee is one of the insects that is significantly endangered by the application of pesticides in the cultivation of crops. Not only is acute toxicity dangerous, but the importance of chronic poisoning by low doses of pesticides in hives is gr
Externí odkaz:
https://doaj.org/article/07feeedc54664fa5bc67b7bc6bb943cb
Autor:
Marian Hýbl, Jan Šipoš, Anna Krejčová, Karolína Sodomová, Ondřej Polák, Ivana Koláčková, Petr Mráz
Publikováno v:
Agronomy, Vol 12, Iss 2, p 370 (2022)
Low plant species richness and abundance, as well as contamination, can lead to a lack of nutrients in the diets of pollinators. This can cause increased oxidative stress, low resistance to disease and reduced detoxification ability. We proposed thre
Externí odkaz:
https://doaj.org/article/eaadc5f49cce4fcc88949c6247e822f0
Autor:
Marek Kopecký, Ladislav Kolář, Kristýna Perná, Radka Váchalová, Petr Mráz, Petr Konvalina, Yves Theoneste Murindangabo, Mohammad Ghorbani, Ladislav Menšík, Miroslav Dumbrovský
Publikováno v:
Agronomy, Vol 12, Iss 1, p 73 (2021)
The present study aims to test and evaluate the efficiency of a new modified method of organic matter evaluation. It allows the assessment of the quality and quantity of the primary soil organic matter and the stable organic fractions separately. The
Externí odkaz:
https://doaj.org/article/f21b5d26482d4b46bc183c10845939a9
Autor:
Marek Kopecký, Ladislav Kolář, Radka Váchalová, Petr Konvalina, Jana Batt, Petr Mráz, Ladislav Menšík, Trong Nghia Hoang, Miroslav Dumbrovský
Publikováno v:
Agronomy, Vol 11, Iss 11, p 2261 (2021)
The properties of black carbon (BC) are described very differently in the literature, even when determined by the same methodological procedure. To clarify this discrepancy, BC was investigated in the clay Cambisols of southern Bohemia, Czech Republi
Externí odkaz:
https://doaj.org/article/e56dfd3784f24f03a90bce135f802a13
Autor:
Marian Hýbl, Andrea Bohatá, Iva Rádsetoulalová, Marek Kopecký, Irena Hoštičková, Alena Vaníčková, Petr Mráz
Publikováno v:
Insects, Vol 12, Iss 11, p 1045 (2021)
Essential oils and their components are generally known for their acaricidal effects and are used as an alternative to control the population of the Varroa destructor instead of synthetic acaricides. However, for many essential oils, the exact acaric
Externí odkaz:
https://doaj.org/article/6d4e9856db244625ba9004bd5712ce0c
Autor:
Petr Mráz, Marian Hýbl, Marek Kopecký, Andrea Bohatá, Irena Hoštičková, Jan Šipoš, Kateřina Vočadlová, Vladislav Čurn
Publikováno v:
Insects, Vol 12, Iss 12, p 1051 (2021)
Western honey bee (Apis mellifera) is one of the most important pollinators in the world. Thus, a recent honey bee health decline and frequent honey bee mass losses have drawn attention and concern. Honey bee fitness is primarily reduced by pathogens
Externí odkaz:
https://doaj.org/article/760a488bce8d48b19169766fd3ca3667
Autor:
Marian Hýbl, Petr Mráz, Jan Šipoš, Irena Hoštičková, Andrea Bohatá, Vladislav Čurn, Tomáš Kopec
Publikováno v:
Insects, Vol 12, Iss 7, p 572 (2021)
Malnutrition is one of the main problems related to the global mass collapse of honey bee colonies, because in honey bees, malnutrition is associated with deterioration of the immune system and increased pesticide susceptibility. Another important ca
Externí odkaz:
https://doaj.org/article/7512b89f4adc403a934e997dd86b91a2
Autor:
Petr Mráz, Marian Hýbl, Marek Kopecký, Andrea Bohatá, Jana Konopická, Irena Hoštičková, Petr Konvalina, Jan Šipoš, Michael Rost, Vladislav Čurn
Publikováno v:
Biology, Vol 10, Iss 5, p 431 (2021)
Ascosphaera apis is a causative agent of chalkbrood, which is one of the most widespread honey bee diseases. In our experiments, the influence of several artificial media and cultivation under different temperatures was evaluated. Concretely, the rad
Externí odkaz:
https://doaj.org/article/6c9f7a2e68804f91a0004e56f60b7637
Autor:
Marek Kopecký, Petr Mráz, Ladislav Kolář, Radka Váchalová, Jaroslav Bernas, Petr Konvalina, Kristýna Perná, Yves Murindangabo, Ladislav Menšík
Publikováno v:
Agronomy, Vol 11, Iss 3, p 445 (2021)
Cultivation of energy crops is a part of modern agriculture. In particular, maize (Zea mays L.) is widely grown in central Europe. However, in terms of erosion risk and high demands on fertilization and protection against diseases and pests, its grow
Externí odkaz:
https://doaj.org/article/d59be0497b454dfba5c1e0b0168ee0b1
Autor:
Marek Kopecký, Ladislav Kolář, Petr Konvalina, Otakar Strunecký, Florina Teodorescu, Petr Mráz, Jiří Peterka, Radka Váchalová, Jaroslav Bernas, Petr Bartoš, Feodor Filipov, Daniel Bucur
Publikováno v:
Energies, Vol 13, Iss 20, p 5270 (2020)
Global deposits of concentrated phosphates, which are a necessary source for the production of phosphate fertilizers, are limited. These reserves keep getting thinner, and every day, large amounts of phosphorus end up in watercourses. In this study,
Externí odkaz:
https://doaj.org/article/6d0190bd71b043f7890d6290d61dfee5