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403 Uppsatser om Agricultural hydrology - Sida 17 av 27
Effect of Bacillus mediated priming on different natural genetic variants of Arabidopsis thaliana
In two feeding experiments Bacillus induced priming of plant defense was tested for its effect against the generalist insect pest Spodoptera littoralis. The main hypothesis for the study was that Bacillus induced priming would enable the plant Arabidopsis thaliana to defend itself
better against this insect herbivore since this priming seems to involve jasmonic acid, known to be important for plant defense to insects. A secondary objective of the study was to examine if any differences in a primed defense capability could be seen between different natural genetic variants (ecotypes) of A. thaliana reflecting habitat differences in pest pressure.
The methods used for plant cultivation and Bacillus inoculation were aimed at reflecting conditions that can be expected in an agricultural cropping system. This meant that all plants were cultivated in soil, and the feeding experiments were conducted with the plants growing intact in the soil system.
Beslut om investering i alternativ energi : en studie om hur lantbrukare fattar beslut vid investering i halmpanna
Interest in alternative energies is high in Sweden today, particularly in the agricultural sector. According to the Swedish lantbruksbarometern (2009), almost all respondents consider the use of some form of alternative energy from the farm. While interest in alternative energies is large, attention to the alternative energy straw has fallen and is almost nowhere mentioned in the literature today. Three years ago, in the Lantbruksbarometern nearly 44% of the farmers would be willing to invest in straw as heating system on the farm. How do the farmers decide to invest in alternative energies? With this information a problem is presented for this paper.
Resistenta rapsbaggar :
Oilseed rape crops are an important in southern Sweden because of the high intensity
of wheat growing. Pollen beetles are the most important pest in oilseed rape and
causes often economic losses. Therefore it?s of great importance that we can control
the population density, e g by using insecticides if necessary, to avoid mayor yield
losses.
In year 2000 pollen beetles were numerous in the province of Östergötland. The
farmers sprayed with insecticides several times, but with low effects on the beetles.
Field trials and laboratory experiments showed that pollen beetles had developed
resistance against pyrethroids.
Presence of Japanese Encephalitis virus vectors in Can Tho City
Japanese encephalitis virus (JEV) is a significant vector-borne zoonotic pathogen, causing devastating encephalitis in humans. Its geographical range includes a majority of Asian countries and has also been recognized in some western Pacific areas. The main vectors of JEV are mosquitoes belonging to the genus Culex. Birds and pigs function as hosts and virus amplifiers, whereas humans are accidental hosts. Japanese encephalitis is commonly regarded as a rural disease.
Stadsdelsparken Skälby i Kalmar : historia, nuläge och framtida utveckling
Skälby park is situated approximately 2,5 km
northwest of the central parts of Kalmar and is
one of fi ve town part parks. Originally Skälby
consisted of a village of four farms. In 1965
the municipality in Kalmar bought Skälby and
the agriculture ceased to appear. The land was
parcelled out into plots and new roads. Only
the area surrounding the old buildings remained,
turned to a park.
Diabetes hos hund : en uppföljning av behandlade hundar ur ett djurägarperspektiv
Diabetes Mellitus is one of the most common endocrinologic disorders among
dogs. The disorder has a complex background, and successful treatment requires a
well-functioning co-operation between pet owners and the veterinarian. The
purpose of this study is to investigate the owners? perspective of diabetic
treatments offered, and to estimate expected length of survival post-insulin
therapy. The research findings are based on a survey mailed to 77 pet owners,
whose dogs were diagnosed with diabetes between 1999 and 2003 at the small
animal clinic of the Swedish University of Agricultural Sciences.
The median survival for the dogs that underwent insulin treatment was 31 months,
i.e.
?Livsformernas strukturering av mäns och kvinnors vardagsliv på landsbygden : ?En studie kring könsstrukturerna i djurhållande företag i Kalmar län.
AbstractThis study is performed by studying seven livestock businesses in the agricultural sector. The focus of the essay has been put on the structures that limit and enable the lives of the farmers in this study. One of these major structures that affect everyday life is the gender structure and to this day the housewife role exists where the women are responsible for the home, family and domestic pets while the men are responsible for the production, machinery and the heavier tasks on the farm. This is grounded in the history and the development that agriculture has gone through, but also in the strong patriarchal power structure that exists in this industry. In this essay I also show how the life form analysis of Liselotte Jakobsen and the independent life form can not be fully applied to the farmer as he is not completely independent in his work.
Hybridlärkens tillväxt i Snogeholm : hur påverkas produktionen i blandbestånd jämfört med trädslagsrena bestånd?
The hybrid larch (Larix x eurolepis Henry) is a fast growing tree species and was introduced in Sweden for about 50 years ago. The high growth and expected resistance to diseases are probably the main reasons of introducing the tree species into the Swedish forests.
The purpose of this thesis was to document the production of hybrid larch planted in the Snogeholm landscape laboratory and to compare the production in the pure hybrid larch stand with the mixture together with pedunculate oak (Quercus robur).
The data collection in Snogeholm since the establishment has been carried out by the Swedish University of Agricultural Science (SLU). The fieldwork for the thesis was carried out in 3 stands, containing hybrid larch, pedunculate oak and a mixture of hybrid larch and pedunculate oak, in order to be able to compare the total stand production of the areas.
The results show that the total production of hybrid larch in the mixed stand only is 35 % compared with the total production of hybrid larch in the pure stand. Therefore, the hypothesis that the total production of hybrid larch is equal to the planted mixture with pedunculate oak was rejected.
The other hypothesis that the total production of a 2 hectare large stand containing a mixture of hybrid larch and pedunculate oak would be greater than the total production of two pure stands of 1 hectare containing hybrid larch and oak each was also rejected. In the studied case the total production was 45 % greater if hybrid larch and pedunculate oak was planted in pure stands.
The results from the case-study only indicate that the total production of hybrid larch and oak under the investigated conditions can be higher when planting the two species in pure stands compared with a mixture of the two species.
3D-modellen som kommunikationsverktyg
If one looks at physical planning in Sweden today one can see that while talking about densification of existing development, reduced emissions and careful use of important land, urban sprawl is a fact with development of sheer residential districts in the urban edges and shopping malls in each and every municipality. As sustainable development is an essential goal for physical planning to strive towards, it is worth questioning if the direction of today?s planning will lead to the goal. A sustainable development can be seen as an obvious to goal aim at. In reality the aim means a hard and complex work.
Förändring av nitratläckage och växtproduktion från låglänt jordbruksmark vid en ny reglering av vattennivån i Mälaren
The water level of Lake Mälaren has been regulated since the 1940?s. A recentinvestigation suggests that the current regulation needs to be adjusted in order toprevent a decline in water level, salt water from infiltrating from Lake Saltsjön,and risk of floodings. In addition to these preventions, the new regulation couldpotentially effect the natural environment and agriculture practices in the lowlands that surround the lake. The new regulation proposal calls for an increase invariations in Mälaren?s water level during seasons, while the annual mean waterlevel will remain the same.
Är rättvisemärkt värdeskapande? : en kvantitativ undersökning ur ett studentperspektiv
Background: There is no guarantee that products should be equitable produced. Many products in today's trade is produced by minors, resulting in poor working environment, and gives the workers low payment. Fairtrade is the only label on the market that ensures that farmers receive fair payment for their products.
Aim: The central aim with our work is to see what the future consumers, in other words students from Lund's university, Malmö College and The Swedish University of Agricultural Sciences in Alnarp, think about products labeled with Fairtrade, and what they consider is value creation for food products. Students are often relatively young; they educate themselves and have new thoughts and valuations about how the world should be.
Ett rikt odlingslandskap ? en utopi? : behovet av förändring för att uppnå miljökvalitetsmålet
Arbetet för rika odlingslandskap i Sverige har pågått under 15 år efter antagandet av miljökvalitetsmålet Ett rikt odlingslandskap. Trots det bedöms målet inte vara nåbart till 2020, det år riksdagen har beslutat att miljökvalitetsmålen ska vara uppnådda till. Syftet med uppsatsen är att analysera hur rådande diskurser påverkar möjligheten att uppnå miljökvalitetsmålet, utifrån hur det framställs i politiska texter. För att ta reda på det görs en diskursanalys av fyra politiska dokument, med utgångspunkt i att språket har stor betydelse för vad texterna förmedlar och hur det görs. Därför grans-kas texternas språkliga innehåll, både det som nämns och utelämnas i dokumenten.
Diskursanalysen utgår från vilken syn som förmedlas på människan, naturen och förändring i texterna om miljökvalitetsmålet.
The economic consequences of Striga hermonthica in maize production in Western Kenya
Kenya is a country of 35 million people and is situated in Eastern Africa. 70% of thepopulation works within the agricultural sector and for many of them food insecurity is amajor problem. Maize and beans are today the staple food for many households. Goodfarming conditions enable two harvests per year and a potential maize yield of 4-5 tons perhectare.A major problem for many farmers in this area is the increase of the weed striga. The weedcauses severe yield losses, and has a major economic impact on smallholders.
Restaurering av vattendrag :
SAMMANFATTNING
Rinnande vatten har över en lång tid spelat en väsentlig roll för
landskapets geomorfologiska processer och utgör viktiga livsmiljöer
för djur och växtsamhällen. Vattendrag har bidragit till människans
utveckling och välstånd. Sedan urminnes tider har vattendrags miljöer
nyttjats som boplats, för vinning av energi, transport och fiske. Likt
allt liv på vår planet är människan beroende av vatten. Betydelsen av
vattendragen, som del av den hydrologiska cykeln, kan därför inte
betonas nog.
Genom mänsklig aktivitet har dock rinnande vattens egenskaper
och landskapsbilden som helhet i många områden förändrats
drastiskt.
Att föda kön och klass. En studie av modersmotivet i Alfred Kämpes "Trälar"
The purpose of this text is to show how the mother motif is portrayed in four selected novels by Alfred Kämpe, but the thesis also serves the purpose of emphasizing the fact that the mother motif can be seen interacting with the class motif.This text will account for a new insight into the motifs in Alfred Kämpe?s Trälar. Known as one of the first authors to write in the genre of working-class literature in Sweden Kämpe?s texts provide motifs common for this genre such as class, identity and solidarity. As this thesis shows there is yet another motif that should be included among these typical Swedish working class literature motifs: the mother motive.