| 1. |
- Johnsson, Anna-Ida, et al.
(author)
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Specific SCAR markers and multiplex real-time PCR for quantification of two Trichoderma biocontrol strains in environmental samples
- 2011
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In: BioControl. - : Springer Science and Business Media LLC. - 1386-6141 .- 1573-8248. ; 56, s. 903-913
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Journal article (peer-reviewed)abstract
- Several strains from the genus Trichoderma (Ascomycetes, Hypocreales) are commercially used as biocontrol agents, e.g. in formulations containing the two Trichoderma strains IMI206039 (Hypocrea parapilulifera B.S. Lu, Druzhinina & Samuels) and IMI206040 (T. atroviride P. Karst). To quantify the presence of the two isolates after application, we developed primers for SCAR markers (Sequence-Characterised Amplified Region). In order to quantify both fungal strains simultaneously, we also designed fluorophore-labelled probes distinguishing the two strains, to be used in combination with the SCAR primers. In incubations of two different soils, artificially inoculated and maintained under controlled conditions, the quantification through amplification with the SCAR markers in qPCR and through colony-forming units from plate counting correlated well. Further tests of the markers on samples taken from a golf green treated with a product containing both strains indicated that the two biocontrol strains did not establish, either on the golf green or in the surrounding area.
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| 2. |
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| 3. |
- Von Rosen, Dietrich
(author)
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Non-negative estimation of variance components in heteroscedastic one-way random-effects ANOVA models
- 2010
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In: Statistics. - : Informa UK Limited. - 0233-1888 .- 1029-4910. ; 44, s. 557-569
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Journal article (peer-reviewed)abstract
- There is a considerable amount of literature dealing with inference about the parameters in a heteroscedastic one-way random-effects ANOVA model. In this paper, we primarily address the problem of improved quadratic estimation of the random-effect variance component. It turns out that such estimators with a smaller mean squared error compared with some standard unbiased quadratic estimators exist under quite general conditions. Improved estimators of the error variance components are also established.
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| 4. |
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| 5. |
- Skovsgaard, Jens Peter
(author)
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Bog om tarmvridrøn
- 2013
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In: Skoven. - 0106-8539. ; 45, s. 551-551
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Other publication (other academic/artistic)abstract
- Book review N. Mayer & R.T. Klumpp (ed.) 2013: Elsbeere in Österreich – Monographie. Verein zur Erhaltung, Pflege und Vermarktung der Elsbeere - Genussregion Wiesenwienerwald Elsbeere, Michelbach.
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| 6. |
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| 7. |
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| 8. |
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| 9. |
- Messing, Ingmar
(author)
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Land and land use : Natural preconditions
- 2011
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In: Agriculture and Forestry in Sweden since 1900- a cartographic description. - 9789187760617 ; , s. 14-22
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Book chapter (other academic/artistic)
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| 10. |
- Messing, Ingmar
(author)
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Marken i Sverige : Naturliga förutsättningar
- 2011
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In: Sveriges nationalatlas. Jordbruk och skogsbruk i Sverige sedan år 1900: en kartografisk beskrivning. - 9789187760594 ; , s. 14-22
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Book chapter (other academic/artistic)
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| 11. |
- Tunon, Håkan, et al.
(author)
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Kulturarv och hållbar utveckling
- 2010
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In: Bebyggelsehistorisk tidskrift. - : Föreningen Bebyggelsehistorisk tidskrift. - 0349-2834 .- 2002-3812. ; , s. 99–106-
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Journal article (other academic/artistic)
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| 12. |
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| 13. |
- Norman, Johan
(author)
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Skogen – en plats för upplevelser
- 2011
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In: Grön Entreprenör, Naturupplevelse och hälsa – forskningen visar vägen. - 9789157690364 ; , s. 62-75
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Book chapter (pop. science, debate, etc.)
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| 14. |
- Palsdottir, Anna Maria, et al.
(author)
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Nature-Based Therapeutic Interventions
- 2011
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In: Forests, Trees and Human Health. - Dordrecht : Springer Netherlands. - 9789048198054 ; , s. 309-342
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Book chapter (other academic/artistic)
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| 15. |
- Thulin, Carl-Gustaf
(author)
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Utsättning av arter : möjlighet för bevarandebiologin
- 2010
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In: Biodiverse. - 1401-5064. ; 15, s. 8-9
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Journal article (pop. science, debate, etc.)abstract
- Ett halvöppet, lövträdsdominerat landskap med betande hjortdjur, visenter, förvildad nötboskap och vildsvin, jagade av livskraftiga populationer av varg, björn och lo. Utopier och vilda fantasier? Kanske i delar, men något håller definitivt på att hända med bevarandet, återskapandet och skötseln av de europeiska vildmarkerna
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| 16. |
- Messing, Ingmar, et al.
(author)
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Methods to estimate lettuce evapotranspiration in greenhouse conditions in the central zone of Chile
- 2009
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In: Chilean Journal of Agricultural Research. - 0718-5820. ; 69, s. 60-70
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Journal article (peer-reviewed)abstract
- This study evaluates five methods to estimate crop evapotranspiration in greenhouse conditions. It compares their performance in relation to the evapotranspiration directly determined from water balance measurements (ET(lys)) in an irrigated lettuce (Lactuca sativa L.) crop during 9 weeks. Daily values of the reference evapotranspiration (ETo) from Class A pan (CAP), Piche atmometers (ATM), Andersson evaporimeters (ANE), FAO-Radiation (FRE) and FAO-Penman-Monteith (PME) equations were compared. The methods showed similar temporal variations but at different ranges as follows: ANE < CAP < FRE < PME < ATM. Furthemore, ETo had a clear correlation with solar radiation. Crop coefficients (Kc = ET(lys)/ETo) varied somewhat amongst the methods, but trends were identified for two periods: in the first week, the overall mean Kc was 0.3 (+/- 0.1) and in weeks 2 to 9 on average 0.6 (+/- 0.3). The greenhouse values of Kc were lower than those generally adopted for lettuce in field conditions. In terms of irrigation design, crop evapotranspiration can be estimated by the methods in this study, on the condition that the appropriate crop coefficients are applied. The fact that ANE showed values closest to those of ETlys, along with cost and management convenience, makes it an advantageous alternative as compared to the other methods.
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| 17. |
- Messing, Ingmar, et al.
(author)
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Rovdrift på åkermark i Uppsala
- 2012
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In: Upsala nya tidning. - 1104-0173. ; , s. 5-
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Other publication (pop. science, debate, etc.)
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| 18. |
- Carlsson, Anders
(author)
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Plant oils as feedstock alternatives to petroleum - A short survey of potential oil crop platforms
- 2009
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In: Plant Breeding. - : Elsevier BV. - 0179-9541 .- 1439-0523. ; 91, s. 665-670
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Research review (peer-reviewed)abstract
- Our society is highly depending on petroleum for its activities. About 90% is used as an energy source for transportation and for generation of heat and electricity and the remaining as feedstocks in the chemical industry. However, petroleum is a finite source as well as causing several environmental problems such as rising carbon dioxide levels in the atmosphere. Petroleum therefore needs to be replaced by alternative and sustainable sources. Plant oils and oleochemicals derived from them represent such alternative sources, which can deliver a substantial part of what is needed to replace the petroleum used as feedstocks.Plant derived feedstock oils can be provided by two types of oil qualities, multi-purpose and technical oils. Multi-purpose oils represent oil qualities that contain common fatty acids and that can be used for both food and feedstock applications. Technical oil qualities contain unusual fatty acids with special properties gained from their unique molecular structure and these types of oils should only be used for feedstock applications. As a risk mitigation strategy in the selection of crops, technical oil qualities should therefore preferably be produced by oil crop platforms dedicated for industrial usage. This review presents a short survey of oil crop platforms to be considered for either multi-purpose or technical oils production. Included among the former platforms are some of the major oil crops in cultivation such as oil palm, soybean and rapeseed. Among the later are those that could be developed into dedicated industrial platforms such as crambe, flax, cotton and Brassica carinata. The survey finishes off by highlighting the potential of substantial increase in plant oil production by developing metabolic flux platforms, which are starch crops converted into oil crops. (c) 2009 Elsevier Masson SAS. All rights reserved.
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| 19. |
- Nilsson, Marie-Louise, et al.
(author)
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Current-use and Organochlorine Pesticides and Polychlorinated Biphenyls in the Biodegradable Fraction of Source Separated Household Waste, Compost, and Anaerobic Digestate
- 2011
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In: Bulletin of Environmental Contamination and Toxicology. - : Springer Science and Business Media LLC. - 0007-4861 .- 1432-0800. ; 86, s. 60-64
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Journal article (peer-reviewed)abstract
- Several current-use (a parts per thousand currency sign80 ng g(-1) dry weight) and organochlorine pesticides (a parts per thousand currency sign15 ng g(-1) dry weight) and polychlorinated biphenyls (a parts per thousand currency sign18 ng g(-1) dry weight) were found in the biodegradable fraction of source separated household waste, compost, and/or anaerobic digestate. The degradation rates of individual compounds differ depending on the treatment. Dieldrin and pentachloroaniline, e.g., degrade more rapidly than the waste is mineralized and accumulates in the products after all treatments. Many organochlorines degrade at the same rate as the waste and have the same concentrations in the waste and products. Chlorpyrifos degrades slower than the waste and accumulates in all products and ethion during anaerobic digestion. The polychlorinated biphenyls and some pesticides show different degradations rates relative the waste during different processes. Understanding the degradation of the contaminants under different conditions is necessary to develop quality criteria for the use of compost and digestate.
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| 20. |
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| 21. |
- Tasin, Marco, et al.
(author)
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Chemical Ecology and Management of Lobesia botrana (Lepidoptera: Tortricidae)
- 2011
-
In: Journal of Economic Entomology. - 0022-0493 .- 1938-291X. ; 104, s. 1125-1137
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Journal article (peer-reviewed)abstract
- The moth Lobesia botrana (Denis & Schiffermuller) (Lepidoptera: Tortricidae) feeds on grapes (Vitis vinifera L.), reducing yield and increasing susceptibility to fungal infections. L. botrana is among the most economically important insects in Europe and has recently been found in vineyards in Chile, Argentina, and California. Here, we review L. botrana biology and behavior in relation to its larval host (the grapevine) and its natural enemies. We also discuss current and future control strategies in light of our knowledge of chemical ecology, with an emphasis on the use of the sex pheromone-based strategies as an environmentally safe management approach. Pheromone-mediated mating disruption is the most promising technique available on grapes and is currently implemented on approximate to 140,000 ha in Europe. Experience from several growing areas confirms the importance of collaboration between research, extension, growers, and pheromone-supply companies for the successful implementation of the mating disruption technique. In the vineyards where mating disruption has been successfully applied as an areawide strategy, the reduction in insecticide use has improved the quality of life for growers, consumers, as well as the public living near wine-growing areas and has thereby reduced the conflict between agricultural and urban communities.
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| 22. |
- Witzgall, Peter
(author)
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Sex pheromones and their impact on pest management
- 2010
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In: Journal of Chemical Ecology. - : Springer Science and Business Media LLC. - 0098-0331 .- 1573-1561. ; 36, s. 80-100
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Journal article (peer-reviewed)abstract
- The idea of using species-specific behavior-modifying chemicals for the management of noxious insects in agriculture, horticulture, forestry, stored products, and for insect vectors of diseases has been a driving ambition through five decades of pheromone research. Hundreds of pheromones and other semiochemicals have been discovered that are used to monitor the presence and abundance of insects and to protect plants and animals against insects. The estimated annual production of lures for monitoring and mass trapping is on the order of tens of millions, covering at least 10 million hectares. Insect populations are controlled by air permeation and attract-and-kill techniques on at least 1 million hectares. Here, we review the most important and widespread practical applications. Pheromones are increasingly efficient at low population densities, they do not adversely affect natural enemies, and they can, therefore, bring about a long-term reduction in insect populations that cannot be accomplished with conventional insecticides. A changing climate with higher growing season temperatures and altered rainfall patterns makes control of native and invasive insects an increasingly urgent challenge. Intensified insecticide use will not provide a solution, but pheromones and other semiochemicals instead can be implemented for sustainable area-wide management and will thus improve food security for a growing population. Given the scale of the challenges we face to mitigate the impacts of climate change, the time is right to intensify goal-oriented interdisciplinary research on semiochemicals, involving chemists, entomologists, and plant protection experts, in order to provide the urgently needed, and cost-effective technical solutions for sustainable insect management worldwide.
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| 23. |
- Daneshi, Ali, et al.
(author)
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Energy assessment in product chain of pasteurized milk: agronomy, animal farm and processing plant
- 2014
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In: Ecopersia. - 2322-2700. ; 2:3, s. 697-714
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Journal article (peer-reviewed)abstract
- The objectives for this study were first to understand and estimate energy consumption in each stage of production and processing of milk using regional data and second, suggesting improvement opportunities. A cradle to gate assessment of market milk was performed by separating the system into three stages: agronomy, animal farm and processing plant. Data were collected from multiple sources e.g. questionnaire, published papers, national and international databases, and the processing plant database. Throughout the study, ISO framework and International Dairy Federation guideline on life cycle assessment were used. The functional unit (FU) was one liter of pasteurized milk packaged in plastic pouch at the processing plant gate. The average energy demand for producing 1 kg of fat-protein corrected milk at farm-gate was 10.8 MJ, although for the final packaged milk, it was 12.5MJ. Main stages in overall energy use of FU were agronomy 68 %, animal farm 19 % and processing plant 13%. The average energy use for raw milk production was 2-5 times higher than previous European reports. To enhance efficiency in this sector, we need to assess other regions’ potentials for feed and milk production and then to focus on agronomy stage for lower energy use by optimization of irrigation, or even importing energy intensive feed such as barley and alfalfa from other countries.
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| 24. |
- Drottberger, Annie, et al.
(author)
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Alternative Food Networks in Food System Transition-Values, Motivation, and Capacity Building among Young Swedish Market Gardeners
- 2021
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In: Sustainability. - : MDPI AG. - 2071-1050. ; 13
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Journal article (peer-reviewed)abstract
- This study sheds light on a new generation of Swedish food producers, market gardeners, who are attracting attention in terms of food system sustainability, prompted by increasing consumer awareness about the value of healthy and locally produced food. Market gardening is part of a global agroecological movement opposed to industrialized agriculture and its negative impacts on the environment and rural communities. These food producers challenge the incumbent agri-food regime through the building of alternative food networks. This case-based study involving 14 young vegetable producers showed that young people who engage in market gardening are strongly motivated by dual incentives, namely entrepreneurship and transformation to sustainability. Six main competences were identified as important for market gardeners: practical skills related to growing vegetables, business management, innovation and continuous learning, systems thinking, pioneering, and networking. Individuals develop their skills through continuous experiential learning and gain knowledge through peer-to-peer learning using social media. However, they need to acquire certain skills relating to their daily work in the field and to managing a business. Market gardeners currently face a number of barriers erected by the sociopolitical environment, in particular regarding access to research-based knowledge, extension services, and business support.
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| 25. |
- Roleda, Michael Y., et al.
(author)
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Chemical profiling of the Arctic sea lettuce Ulva lactuca (Chlorophyta) mass-cultivated on land under controlled conditions for food applications
- 2021
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In: Food Chemistry. - : Elsevier BV. - 0308-8146 .- 1873-7072. ; 341
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Journal article (peer-reviewed)abstract
- The increasing use of seaweeds in European cuisine led to cultivation initiatives funded by the European Union. Ulva lactuca, commonly known as sea lettuce, is a fast growing seaweed in the North Atlantic that chefs are bringing into the local cuisine. Here, different strains of Arctic U. lactuca were mass-cultivated under controlled conditions for up to 10 months. We quantified various chemical constituents associated with both health benefits (carbohydrates, protein, fatty acids, minerals) and health risks (heavy metals). Chemical analyses showed that long-term cultivation provided biomass of consistently high food quality and nutritional value. Concentrations of macroelements (C, N, P, Ca, Na, K, Mg) and micronutrients (Fe, Zn, Co, Mn, I) were sufficient to contribute to daily dietary mineral intake. Heavy metals (As, Cd, Hg and Pb) were found at low levels to pose health risk. The nutritional value of Ulva in terms of carbohydrates, protein and fatty acids is comparable to some selected fruits, vegetables, nuts and grains.
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