<trans-abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml">For the on-farm assessment of protein and energy supply of dairy cows, specific management tools based on milk protein and urea content are used. In order to determine the degree of agreement between estimates from the so-called 9-fields table or the updated 6-fields table and the actual protein and energy supply, data from a feeding trial were used (chi-square fit test, sensitivity, specificity and likelihood ratios). The optimum supply range for both crude protein and energy was defined within ±10% of daily requirement. For the first ten weeks of lactation the proportions of correct estimates were 17.2% and 27.6% for the 9-fields and the 6-fields table, respectively. Sensitivity ranged from 0.00 to 0.50 and from 0.00 to 0.56, respectively. In addition, the false assessments were compared with their effective classification. It was found that these are not always located in the adjacent fields. Therefore a mere adaptation of thresholds for milk urea, milk protein or the fat to protein ratio will not substantially improve the reliability of the assessment. Due to the high proportions of seriously false estimates, the tools tested in the present study cannot be recommended for assessment of energy and protein supply of individual dairy cows.</trans-abstract>

Department für Nachhaltige Agrarsysteme, Institut für Nutztierwissenschaften

Höhere Bundeslehr- und Forschungsanstalt für Landwirtschaft Raumberg-Gumpenstein, Institut für Nutztierforschung

Assessment of the protein and energy supply of early lactating dairy cows based on milk components

<abstract xmlns="http://www.w3.org/1999/xhtml">
Profile-differentiated soils of the Precarpathian region were formed due to the combined effect of such processes as podzolization, lessivage, gley-eluvium. For the diagnosis of these soils, researchers have used different diagnostic features. The most controversial is the diagnosis of the lessivage process. Based on our own field and analytical studies, it is suggested to use the granulometric composition compared to the contents of the horizon and the silt content in argillanes for the diagnosis of lessivage argillanes within the illuvial horizon. A reliable feature of lessivage is the equal distribution of the montmorillonite group minerals within the profile, which is diagnosed by the ratio of SiO2:Al2O3 in the silty fraction, the accumulation of Fe2O3 and R2O3 in the illuvial horizon in comparison with the rock and positive values of eluvial-accumulative coefficient of oxides in the silty fraction in the illuvial part of the soil profile.
</abstract>

Diagnostic criteria for lessivage of profile-differentiated soils of the Precarpathian region (Ukraine)

<abstract xmlns="http://www.w3.org/1999/xhtml">
Most recirculation aquaculture systems (RAS) use aerated biofilters to maintain suitable water quality for fish production. However, application of non-aerated biofilters may provide opportunities to lower aeration costs, water usage and concentration of all nitrogenous wastes in the effluent water. Our study aimed at comparing the biofiltration performance characteristics of two biofilters: a conventional aerated biofilter and a non-aerated biofilter receiving the same effluent water from a small-scale RAS. The two biofilters were evaluated in triplicate and tested concurrently for seven months. Water quality parameters were monitored at the biofilter inlets and outlets and in the fish tanks. At the beginning of the experiment, the concentration of ammonia at the two biofilter outlets were not significantly different. However, the concentrations decreased with time reaching mean values of 1.33 ± 0.02 mg L−1 and 1.23 ± 0.21 mg L−1 N-NH4 in the aerated and non-aerated biofilters, respectively. Whereas phosphorus and nitrate levels were significantly high in the aerated biofilter. There was no significant difference in the growth of fish between the aerated and non-aerated biofilters. The results suggest that non-aerated biofilters can be as effective as aerated biofilters in maintaining suitable water quality for <italic>O. niloticus</italic> production.
</abstract>

Institute of Hydrobiology and Aquatic Ecosystem Management

University of Natural Resources and Life Sciences

Jomo Kenyatta University of Agriculture and Technology

Department of Fisheries and Natural Resources

Department of Zoology, Entomology and Fisheries Sciences

Effects of aerated and non-aerated biofilters on effluent water treatment from a small-scale recirculating aquaculture system for Nile tilapia (<italic>Oreochromis niloticus</italic> L.)

<abstract xmlns="http://www.w3.org/1999/xhtml">
Soybean crop management have not been studied much in Central Europe as compared with cereals. We assessed the effect of variety, row spacing, seeding rate and nitrogen (N) fertilization on yields and yield components of soybean in a two-year experiment in Gleisdorf, Austria. The varieties Lenka, Naya and Xonia were tested in row spacings of 13 cm, 38 cm and 76 cm with 30 germinable seeds m−2. Additionally, 60 seeds m−2 were tested at 13 cm row spacing, and 38 cm row spacing was additionally established with N fertilization. Faster soil coverage was obtained with a high seeding rate or narrower row spacings. First pod height differed between varieties and increased with higher seeding rate. Grain yield was not affected by treatments but yield components differed. The widest row spacing resulted in a lower plant density but more pods plant−1, grains plant−1, grains pod−1 (in one year) and a higher thousand kernel weight (TKW). The higher seeding rate resulted in a higher plant density but less pods plant−1 whereas grains pod−1 and TKW did not differ. N fertilization did not affect the grain yield. Correlation analysis showed a high adaptability of soybean to different seeding rates and row spacings through modulation of yield components.</abstract>

University of Natural Resources and Life Sciences Vienna (BOKU)

Department of Crop Sciences, Institute of Agronomy

Chamber of Agriculture in Styria, Division of Agronomy

Effect of row spacing, seeding rate and nitrogen fertilization on yield and yield components of soybean

<abstract xmlns="http://www.w3.org/1999/xhtml">
This paper aims to analyze urban consumer preferences for Albanian honey, focusing on key product attributes such as origin, type, location and price, using a conjoint choice experiment and latent class approach. Origin and location-landscape were found to be the most important factors for most surveyed consumers. Albanian consumers prefer honey produced in mountainous forests and on pastures. Moreover, multi-flower honey is preferred compared to chestnuts honey. These results can be used to producers’ advantage when local branding and well-perceived certification (e.g., producer associations’ brands) would be applied in order to increase the consumer awareness and strengthen the intrinsic features of the product especially for small producers. Labeling should be clear and emphasize the origin as well as the natural landscape where beehives are kept. Furthermore, in its regionalization economic development policy, the government may consider supporting honey produced from the mountainous areas.
</abstract>

Alma Mater Studiorum - University of Bologna

Department of Natural Resources and Environmental Management

Analysis of urban consumer preferences for honey in the context of a transition economy – A case study for Albania

Buchbesprechung

AHEAD OF PRINT

Volume 74 (2023): Issue 2 (December 2023)

Volume 74 (2023): Issue 1 (March 2023)

Volume 73 (2022): Issue 3 (September 2022)

Volume 73 (2022): Issue 2 (June 2022)

Volume 73 (2022): Issue 1 (March 2022)

Volume 72 (2021): Issue 3 (September 2021)

Volume 72 (2021): Issue 2 (June 2021)

Volume 72 (2021): Issue 1 (March 2021)

Volume 71 (2020): Issue 4 (December 2020)

Volume 71 (2020): Issue 3 (September 2020)

Volume 71 (2020): Issue 2 (June 2020)

Volume 71 (2020): Issue 1 (March 2020)

Volume 70 (2019): Issue 4 (December 2019)

Volume 70 (2019): Issue 3 (December 2019) Special Issue: with invited papers from the 47th International Symposium „Actual tasks on Agricultural Engineering“ (ATAE), 5th – 7th March 2019, Opatija, Croatia, http://atae.agr.hr/, Editor: Prof. Andreas Gronauer

Volume 70 (2019): Issue 2 (June 2019)

Volume 70 (2019): Issue 1 (March 2019)

Volume 69 (2018): Issue 4 (December 2018)

Volume 69 (2018): Issue 3 (September 2018)

Volume 69 (2018): Issue 2 (June 2018)

Volume 69 (2018): Issue 1 (March 2018)

Volume 68 (2017): Issue 4 (December 2017)

Volume 68 (2017): Issue 3 (September 2017)

Volume 68 (2017): Issue 2 (June 2017)

Volume 68 (2017): Issue 1 (March 2017)

Volume 67 (2016): Issue 4 (December 2016)

Volume 67 (2016): Issue 3 (September 2016)

Volume 67 (2016): Issue 2 (June 2016)

Volume 67 (2016): Issue 1 (March 2016)

Die Bodenkultur: Journal of Land Management, Food and Environment

“Die Bodenkultur: Journal of Land Management, Food and Environment” is an interdisciplinary forum dedicated to all aspects of research in the rural area. Our aim is to provide an international outlet for new results in all disciplines of land management, food, environment and related sciences.  The journal publishes in an open access model.  Rejection Rate   10 % (2014)   Archiving  Sciendo archives the contents of this journal in Portico - digital long-term preservation service of scholarly books, journals and collections.  Plagiarism Policy  The editorial board is participating in a growing community of Similarity Check System's users in order to ensure that the content published is original and trustworthy. Similarity Check is a medium that allows for comprehensive manuscripts screening, aimed to eliminate plagiarism and provide a high standard and quality peer-review process.  Copyright Policy  The work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.  Peer Review process  The journal uses a double-blind reviewing process, thus authors remain anonymous to referees and referees remain anonymous to authors. 

Die Bodenkultur: Journal of Land Management, Food and Environment

Volume 70 (2019): Issue 4 (December 2019)

Research Articles

Assessment of the protein and energy supply of early lactating dairy cows based on milk components

Diagnostic criteria for lessivage of profile-differentiated soils of the Precarpathian region (Ukraine)

Effects of aerated and non-aerated biofilters on effluent water treatment from a small-scale recirculating aquaculture system for Nile tilapia (Oreochromis niloticus L.)

Effect of row spacing, seeding rate and nitrogen fertilization on yield and yield components of soybean

Analysis of urban consumer preferences for honey in the context of a transition economy – A case study for Albania

Non-research papers (editorial notes, news, obituaries, book reviews)

Buchbesprechung

Search

All Volumes and Issues in this Journal