90 uppsatser · sida 6 av 6
… e.g. use of natural grazing areas, maintenance of biodiversity, minor use of fertilizers and pesticides, use of land (pasture/leys) that otherwise would not be used for production of human food for direct consumption (e.g. grain) since the land is not suitable for that. To sum …
… of spruces that were planted on drained peat land and how different amount of fertilizers affects the growth. Potassium deficiency is strongly growth inhibiting, since potassium is important for substance transport in the tree. Potassium is also important for the carbohydrate …
utvärdering och optimering av anläggningen och uppgradering av biogasen
… production and the substrate is transformed into high-quality biological fertilizer. This bachelor thesis focuses on a pig farm in south-western Sweden, where biogas is produced from pig manure, evaluates and suggests ways of optimizing the process and investigates whether …
… used for pulp production, differences in land use, use of pesticides and fertilizers as well as absorption of carbon dioxide differ. Pulp and fibre production should be integrated to reduce energy consumption and the amount of chemicals used. The energy can also be recycled to a …
a case study comparing nutritional and microbiological properties
… The development of organic hydroponics is dependent on replacing synthetic fertilizers with organically derived nutrients, such as those found in aquaculture effluents. Also, in hydroponic cultivation the establishment of a plant pathogen suppressive micro flora is part of the …
… per gram soil and 35 000 spores per gram soil) and three different nitrogen fertilizers, calcium tetrahydrate, ammoniumnitrate and urea were compared in two different levels corresponding 60 N kg/ha and 120 N kg/ha with an unfertilized control. It is considered that there is no …
… production, both small scale and professional. Spreading of phosphorus fertilizers and manure is therefore seen as a necessity in today's agriculture in order to achieve high yield. Manure management, livestock farming and manure storage could contribute to the eutrophication of …
En fallstudie av Himmerfja?rdsverket
… produced every year. The reminder from the biogas production can be used as fertilizer in the farming industry. 56 % of the biogas is sold as fuel and the remaining gas is used for internal processes. Himmerfja?rdsverket could reduce its energy need for heating by half by …
… yeast counts in the fresh crop when manure was used instead of inorganic fertilizer. Silage from the second harvest had shorter aerobic storage stability compared to silage from the first harvest. Also silages with high DM content had shorter aerobic stability than silages with …
… of the chain. The conclusions of the value chain analysis were: - The use of fertilizers and pesticides has a major impact in the value chain but differs widely between the farmers. A more controlled and effective use can have positive effect on both the economy and the …
För att växter ska växa bra krävs det en mix av olika näringsämnen där de två viktigaste näringsämnena normalt sett är kväve (N) och fosfor (P). Det är viktigt att mixen av olika näringsämnen passar växtens behov samt att näringsämnena är möjliga för växten att ta upp. Det får …
Resultat från 3 olika bestånd i Västra Götaland. Åldern på bestånden är 30, 50 och 50 år. Varje provyta var 100 m2. Bestånden har vuxit utan gallring och gödsling och skötts enligt en metod som kallas Hyssnametoden. Syftet med studien var att beskriva, följa upp och utvärdera …
växtnäringsförsök och litteraturstudie
… The literature study shows that comfrey liquid is not sufficient as a total fertilizer. The low nitrogen content makes it less suitable for organic transplant production. However, comfrey liquid can be used in fruit setting crops as tomatoes, peppers and cucumber, from the time …
en bedömning av intresset för nya näringsrika produkter
Sewage sludge contains plant nutrients and has earlier been utilised as fertilizer to cropland. Unfortunately not only plant nutrients but also heavy metals, pathogens and organic contaminants tend to accumulate in sludge. The suitability to use sewage sludge in agriculture has …
In ambition to produce more and better harvests, artificial fertilizers are used to produce a better growth of crops in the agriculture landscape. This contributes to leakage of nutrients. Our forests also exhibit a leakage of nutrients. Air pollution contributes to more …
