Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2025 (vol. 73), issue 1

Pauesia silana Tremblay, 1969: Biological control agent for the Maghreb pine aphid Cinara magherbica Mimeur, 1934 on Pinus halepensis Mill., 1768 in Algeria

Leila Bourouba, Malik Laamari

Acta Univ. Agric. Silvic. Mendelianae Brun. 2025, 73(1), 7-18 | DOI: 10.11118/actaun.2025.001  

The presence of Pauesia silana Tremblay, an aphid parasitoid (Hymenoptera: Braconidae: Aphidiinae), has been recorded in Algeria. This parasitoid was found in association with Cinara pini Linnaeus, which infests Pinus nigra Arn. and Pinus halepensis Mill. This study, conducted from 2019 to 2021, aimed to identify the natural enemies of the Maghreb pine aphid, Cinara magherbica Mimeur, in the Aleppo pine forests (Pinus halepensis Mill.) in the Khenchela province. Specimens were collected from mummified aphid colonies, randomly sampled across three forest areas. The study analyzed the correlation between aphid densities and ecological parameters, including...

Effect of vermicompost-based preparations on yield formation, production and quality of sunflower

Alexandra Zapletalová, Tomáš Vician, Ivan Černý, Dávid Ernst, Ivan Ravza, Rastislav Bušo

Acta Univ. Agric. Silvic. Mendelianae Brun. 2025, 73(1), 19-26 | DOI: 10.11118/actaun.2025.002  

The research was carried out on fields of farm AGRO SAP s.r.o. located in Nenince near the town Veľký Krtíš in 2020-2022. The design of experiment was based on randomized split plot method in three repetitions, with a plot size 3 m × 20 m. The aim of experiment was found out effect of two vermicompost-based preparations T1 and T2 on two sunflower hybrids H1 and H2. Evaluated parameters were yield-forming elements (number of plants, diameter of heads, weight of head, thousand seed weight), seed yield and oil content. Use of vermicompost-based preparation T2 had significant impact on increase of yield-forming elements (diameter of head 17.29 ± 1.41...

Effects of Salt Stress on Origanum majorana and Improvement via Association with Halophytes Plants: Spergularia salina and Aptenia cordifolia

Issam El-Khadir, Yassine Mouniane, Ahmed Chriqui, Mohamed Kouighat, Driss Hmouni

Acta Univ. Agric. Silvic. Mendelianae Brun. 2025, 73(1), 27-35 | DOI: 10.11118/actaun.2025.003  

This study explores the effect of salinity on the growth of oregano (Origanum majorana) and the potential mitigating effects of co-cultivation with the halophytic plants Spergularia salina and Aptenia cordifolia. Morphological parameters such as biomass and length of aerial part (LPA) were measured, along with physiological parameters such as leaf water content, chlorophyll content, proline and sugar levels. Under saline conditions, the biomass of co-cultured oregano increased by 15% compared to that grown alone, while LPA increased by 10%. In addition, co-culture resulted in a 20% increase in leaf water content and a 15% rise in chlorophyll levels...

Urban Soil Chemistry and Tree Nutrition under the Impact of Winter Maintenance Salts Application on Pavements

Aleš Kučera

Acta Univ. Agric. Silvic. Mendelianae Brun. 2025, 73(1), 37-50 | DOI: 10.11118/actaun.2025.004  

Urban soil is under the influence of winter maintenance of roads and pavements using de-icing salts. Water-soluble salts (chlorides mainly) are typical of high mobility and effect on soil chemistry and plants. This study deals with the impact of de-icing salts applied to winter maintain the pavement and road surface on soil chemistry and tree nutrition. Soil chemistry was observed in the Třinec city (Czech Republic) during two winter seasons with three soil sample collection periods (December 2018; February 2019 and February 2020; 8 sampling zones - streets and parks; the sampling depths of 5-15 cm in the 0.5 to 7 m distance from pavements). The tree...

Features of the photosynthetic apparatus of chlorophyll-deficient mutants of various types and their impact on productivity traits in linseed

Іryna Poliakova, Viktoriia Kolesnyk, Оlena Boikа, Viktor Lyakh

Acta Univ. Agric. Silvic. Mendelianae Brun. 2025, 73(1), 51-60 | DOI: 10.11118/actaun.2025.005  

The unique phenotypic expression and diverse changes in chlorophyll-deficient mutants make them ideal model objects for physiological, biochemical, and genetic studies, particularly in the context of photosynthesis in various cultivated plants. The paper presents the results of a comparative study of two chlorophyll-deficient mutations of linseed types, chlorina and xantha, obtained from gamma irradiation of seeds and their initial genotypes. It was found that in the xantha type mutation, the disorders affected the morphology of chloroplasts, causing their elongation and, as a result, a change in shape from oval to cylindrical. A decrease in the content...