Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2022 (vol. 70), issue 4-5

Chemical Diversity of Essential Oils from Aerial Parts of Eight Species of Zingiberaceae Family from Vietnam

Hong Thien Van, Sao Mai Dam, Uyen Thuy Xuan Phan, Thi Ngoc Anh Nguyen, Thi Bao Tran Nguyen, Tan Loc Tran, Thao Nguyen Luu, Van Son Le, Nguyen Tuong An Huynh

Acta Univ. Agric. Silvic. Mendelianae Brun. 2022, 70(4-5), 273-281 | DOI: 10.11118/actaun.2022.020  

The objective of this work was to analyze the content and the chemical diversity of the essential oils from the aerial parts of eight species belonging to Zingiberaceae family collected in Binh Chau-Phuoc Buu Nature Reserve, Vietnam. The essential oils were isolated by hydrodistillation and their constituents were investigated by gas chromatography-mass spectrometry. The essential oils from the aerial parts of eight studied species, including Zingiber zerumbet, Zingiber pellitum, Curcuma pierreana, Globba macrocarpa, Globba globulifera, Alpinia conchigera, Stahlianthus campanulatus and Amomum sp. were obtained in a yield of 0.01%, 0.008%, 0.01%, 0.012%,...

Trends in Air Temperature and Precipitation in Southeastern Czech Republic, 1961-2020

Mat�j Ors�g, Milan Fischer, Miroslav Trnka, Jan Brotan, Gabriela Pozn�kov�, Zden�k �alud

Acta Univ. Agric. Silvic. Mendelianae Brun. 2022, 70(4-5), 283-294 | DOI: 10.11118/actaun.2022.021  

This study presents a summary of sixty years of air temperature and precipitation measurements at the �ab�ice weather station, located in the southeastern Czech Republic and operated by Mendel University in Brno. An instrumental dataset spanning two climatological normal periods (1961- 1990 and newly established 1991-2020) is analyzed for long term linear trends with monthly data presented in full span in Appendices. In the new climate normal period, the mean annual temperature increased from 9.3 �C to 10.3 �C with growing trend of 0.34 �C/10 years (p < 0.001). Every calendar month of year is warmer, with the highest and fastest increase in August...

Economic Evaluation of the Selected Ecologically Significant Element in Agriculture

Ivo Hor�k, Petr Marada

Acta Univ. Agric. Silvic. Mendelianae Brun. 2022, 70(4-5), 295-306 | DOI: 10.11118/actaun.2022.022  

Ecologically significant elements are essential not only for the development and quality of life in rural areas, but also for agricultural management. Services provided by these ecosystems ensure water retention in the landscape, a protection against erosion and an increase in biodiversity. In the context of current political debates, the importance and necessity of highlighting the value of ecologically significant elements is desirable from the farmer's point of view. This study inquires into costs and benefits while implementing a selected ecologically significant element - landscaping orchard in an agricultural area, taking into account not only...

Influence of Feeding Wormwood (Artemisia Capillaris) on Quail Meat Productivity

Ildus Ibatullin, Mykhailo Sychov, Dmytro Umanets, Igor Ilchuk, Ivan Balanchuk, Ruslana Umanets, Tetiana Holubieva, Lubov Andriinko, Volodymyr Otchenashko, Kostiantyn Makhno, Olena Tytariova, Oksana Kuzmenko

Acta Univ. Agric. Silvic. Mendelianae Brun. 2022, 70(4-5), 307-316 | DOI: 10.11118/actaun.2022.023  

Recently, the requirements for the quality and safety of poultry products have significantly increased, what has notably limited the use of antibiotics in feeding poultry. This is one of the reasons for the growing interest in the use of phytogenic feed additives. We have conducted an experiment to determine the influence of Artemisia capillaris on young quail meat productivity. To carry out the experiment, we have formed five groups, each counting 100 quail heads. During the experiment, which lasted for 35 days, dried powdered wormwood (Artemisia capillaris) in the amount of 0.5%, 1.0 and 1.5% by weight of compound feed was introduced into the feed...

Nutrient Balance from Agricultural Pollution Sources on Selected Tributaries to the �vihov Reservoir

Petra Oppeltov�, Tom� Kv�tek, Pavel Kasal

Acta Univ. Agric. Silvic. Mendelianae Brun. 2022, 70(4-5), 317-335 | DOI: 10.11118/actaun.2022.024  

Agriculture is the leading source of non-point sources of water pollution, especially in terms of the runoff process. Agricultural management promotes extensive water contamination, soil erosion and sedimentation in streams and reservoirs. The water reservoir �vihov on the �elivka river supplies drinking water to more than 1.5 million people. The catchment area of the water supply reservoir is intensively used for agriculture, more than 55% of the catchment area is arable land. Nutrients such as phosphorus and nitrates in the upper water-ways of tributaries are a huge problem. The aim of the research is to evaluate concentration trends and losses of...