Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2022 (vol. 70), issue 2
Feeding Behaviour of Eurasian Beavers (Castor fiber) Along Small Streams in an Agricultural Landscape
Ondřej Mikulka, Miloslav Homolka, Jakub Drimaj, Jiří Kamler
Acta Univ. Agric. Silvic. Mendelianae Brun. 2022, 70(2), 71-82 | DOI: 10.11118/actaun.2022.007 
In areas with high population density, the Eurasian beaver may be forced to utilise sparsely forested landscapes where living conditions may not be optimal for the species. Here, we examine the feeding strategy of Eurasian beavers along a number of small (mainly) forested streams in the Czech agricultural landscape. Diet availability in these sparsely forested landscapes is characterised by a lack of woody plants but a large supply of herbaceous vegetation, including agricultural crops grown close to the watercourse. The beaver has adapted to such conditions by building dams on low-water streams, allowing it to move between scattered diet resources....
Suitability of Using Mechanization Means for the Maintenance of Grass Stands by the Method of Mulching
Luboš Staněk, Tomáš Krajíček, Tomáš Dvořák
Acta Univ. Agric. Silvic. Mendelianae Brun. 2022, 70(2), 83-95 | DOI: 10.11118/actaun.2022.008
This study aims to provide comprehensive and practical information on particular mechanization means used in the maintenance of permanent grass stands, namely grass cutting technologies without the collection of cut grass biomass - mulching. A sample consisting of six machines classified into three categories (uniaxial tool carriers, single-axle small tractors, cutting machines with a zero turning radius) was tested in practice and functional and operational aspects of the machines were studied on different localities of permanent grass stands. Data measured in the individual machines were used to calculate consumption [l/ha], consumption [l/mth],...
Phyllonorycter cerris (Gregor), Taxonomy, Biology and Distribution (Lepidoptera: Gracillariidae)
František Gregor, Hana Šefrová, Aleš Laštůvka, Zdeněk Laštůvka
Acta Univ. Agric. Silvic. Mendelianae Brun. 2022, 70(2), 97-108 | DOI: 10.11118/actaun.2022.009
Species independence of Phyllonorycter cerris (Gregor, 1952) is evidenced by differences in coloration, results of molecular analysis, and trophic specialization. The differences between P. cerris and P. quercifoliella (Zeller, 1839) lie in the basic appearance of the forewings, and in the location and shape of some strigulae. The genetic distance (COI) between Phyllonorycter cerris and P. quercifoliella is 2.5%. The larva of Phyllonorycter cerris mines only Quercus cerris L. in central Europe, P. quercifoliella mines oligophagously Quercus spp. of the section Robur Reich. Phyllonorycter cerris is redescribed, data on biology, population densities,...
Limiting Factors of Agronomic Characteristics for Maize Through Nutrient Omission Techniques
Elli Afrida, Koko Tampubolon
Acta Univ. Agric. Silvic. Mendelianae Brun. 2022, 70(2), 109-118 | DOI: 10.11118/actaun.2022.010
The deficiency of primary macronutrients can inhibit the vegetative growth of the plants. The study aimed to obtain the influence of nutrient omission techniques fertilization (NOTF) on the agronomic characteristics, nutrient uptake and to determine the growth limiting factors for maize. This research was located on the farmer field in Padang Bulan, Medan Baru, North Sumatra, Indonesia, from December 2020 to March 2021. This research was applied the Randomized Block Design within the single factor through NOTF that has been converted (urea: superphosphate: KCl = 0.15: 0.10: 0.025 g kg-1). The treatment using F0 = control; F1 =...