Publications
NIBIOs employees contribute to several hundred scientific articles and research reports every year. You can browse or search in our collection which contains references and links to these publications as well as other research and dissemination activities. The collection is continously updated with new and historical material.
2021
Authors
Darius KviklysAbstract
No abstract has been registered
Authors
Ran Nisim Lati Jesper Rasmussen Dionisio Andújar Jose Dorado Therese With Berge Christina Wellhausen Michael Pflanz Henning Nordmeyer Michael Schirrmann Hanan Eizenberg Paul Neve Rasmus Nyholm Jørgensen Svend ChristensenAbstract
The adoption of site-specific weed management (SSWM) technologies by farmers is not aligned with the scientific achievements in this field. While scientists have demonstrated significant success in real-time weed identification, phenotyping and accurate weed mapping by using various sensors and platforms, the integration by farmers of SSWM and weed phenotyping tools into weed management protocols is limited. This gap was therefore a central topic of discussion at the most recent workshop of the SSWM Working Group arranged by the European Weed Research Society (EWRS). This insight paper aims to summarise the presentations and discussions of some of the workshop panels and to highlight different aspects of weed identification and spray application that were thought to hinder SSWM adoption. It also aims to share views and thoughts regarding steps that can be taken to facilitate future implementation of SSWM.
Abstract
No abstract has been registered
Abstract
Horticultural production systems are under pressure to find environmentally friendly growing media. Peat is currently the most popular substrate for fresh potted herbs production; however, this raw material is not sustainable due to the large amount of greenhouse gases released during its harvesting. Therefore, the goal of the study was to test the performance of various commercial wood fiber products and compare them with peat and coir in an ebb-and-flow production system with basil (Ocimum basilicum L. 'Marian'). Basil plants were grown in three different pot sizes (6, 9 and 12 cm in diameter) and under various fertigation regimes (EC 1, 2 and 3). Height and biomass of the plants were recorded when the best performing plants reached the commercial stage. The tallest plants and greatest biomass were produced in peat and coir, however, the results confirm that wood fiber can be a promising substrate alternative. Further research is needed to study, among others topics, how to modify some properties of wood fibers to fulfil their potential as a replacement for non-sustainable growing media in production of herbs in pots.
Authors
Radosav Cerović Milica Fotirić Akšić Milena Đorđević Mekjell MelandAbstract
No abstract has been registered
Abstract
The aim of this study was to demonstrate how aquacultural sludge can be processed and utilized as an organic nutrient solution (ONS) for hydroponic lettuce production. By using a previous developed method, approximately 80% of the processed sludge was reclaimed as a clear, nutrient-rich solution. The performance of the recovered nutrient solution on lettuce growth was assessed in a nutrient film hydroponic system. The results were compared to the results obtained using a conventional nutrient solution (CNS). Yield, fresh weight, water consumption, and nutrient and heavy metal content in leaf tissue were measured. In spite of a 16% lower average fresh weight obtained in ONS compared to the weight obtained in CNS, there was no statistical difference of the yield of lettuce among the two nutrient solutions. After the cultivation period, 90% of the lettuce heads grown in ONS exceeded the marked weight of 150 g. Foliar analysis revealed a similar or higher content of all nutrients, except of magnesium and molybdenum in the leaves of lettuce grown in the ONS compared to lettuce grown in the CNS. This study shows that nutrients recovered from aquacultural sludge can be utilized as fertilizer, thereby reducing the dependency on mineral fertilizer in hydroponic and aquaponic systems.
Authors
Caroline Chylinski Sokratis Ptochos Berit Marie Blomstrand Håvard Steinshamn Inga Marie Aasen Karl-christian Mahnert Stig Milan Thamsborg Spiridoula AthanasiadouAbstract
Subclinical parasite infections in livestock production have huge economic impact on the farming industry, leading to decreased animal welfare and reduction in meat, milk and wool production. The global spread of anthelmintic resistance has exacerbated the threat of gastrointestinal nematode (GIN) infections to small ruminant health and production. Phytochemicals, such as condensed tannins (CT), have shown promising anthelmintic potential, and could complement other management practices to reduce anthelmintic use for parasite control. Conifer bark is a rich source of CT. Studies have shown that the content of CTs in Norway spruce and Scots pine varies, but on average they contain around 4% CTs. This study explored the anthelmintic activity of bark from Norwegian conifers over two seasons, extracted with three different solvents (water, acetone, methanol), against two sheep GIN, Teladorsagia circumcincta and Trichostrongylus colbriformis. Bark extracts were analysed to determine their total CT content and tested in vitro, with the aim to quantify their impact on egg hatching and L3 larval motility. Results show significant variation in efficacy of the extracts on egg hatching in a dose dependent manner. The CT content of the bark extracts were not always associated with LD50 values, indicating that other plant compounds may have additional anthelmintic effects. Preliminary results of the L3 larval motility test showed that incubation in the bark extracts had a smaller impact on this parasite stage at the concentrations tested. This research brings new insights into the potential anthelmintic activity of different phytochemicals and discusses the potential of bark extracts as a tool in the sustainable control of GIN in small ruminants.
Abstract
Water consumption along value chains of goods and services has increased globally and led to increased attention on water footprinting. Most global water consumption is accounted for by evaporation (E), which is connected via bridges of atmospheric moisture transport to other regions on Earth. However, the resultant source–receptor relationships between different drainage basins have not yet been considered in water footprinting. Based on a previously developed data set on the fate of land evaporation, we aim to close this gap by using comprehensive information on evaporation recycling in water footprinting for the first time. By considering both basin internal evaporation recycling (BIER; >5% in 2% of the world’s basins) and basin external evaporation recycling (BEER; >50% in 37% of the world’s basins), we were able to use three types of water inventories (basin internal, basin external, and transboundary inventories), which imply different evaluation perspectives in water footprinting. Drawing on recently developed impact assessment methods, we produced characterization models for assessing the impacts of blue and green water evaporation on blue water availability for all evaluation perspectives. The results show that the negative effects of evaporation in the originating basins are counteracted (and partly overcompensated) by the positive effects of reprecipitation in receiving basins. By aggregating them, combined net impacts can be determined. While we argue that these offset results should not be used as a standalone evaluation, the water footprint community should consider atmospheric moisture recycling in future standards and guidelines.
Authors
Qianwen Ding Zhen Zhang Yu Li Hongliang Liu Qiang Hao Yalin Yang Einar Ringø Rolf Erik Olsen Jihong Liu Clarke Chao Ran Zhigang ZhouAbstract
No abstract has been registered
Authors
Michal Sposob Radziah Wahid Keno FischerAbstract
No abstract has been registered