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… review the possibilities to reduce nitrogen leachingby adjusting the nitrogen fertilizer rates according to variations within fields croppedwith cereals.Calculations of the differences in leaching between uniform applications and sitespecificones were done with the leaching …
… NPK is spread every year in the spring. The strategy with annual NPK-fertilizer in thespring has proven to be better for the crop, the environment and the farmers economy.In the NPK-system the crop responds with higher yields and better quality, especially in thespring cereals …
… boron in Swedishforest fertilization. Boron has been added to Swedish forest fertilizers since the beginning of the1980s. This makes the fertilizers more expensive and therefore has the necessity of boron inSwedish forest fertilization been raised.The Swedish bedrock generally …
En aktörsanalys
… plantnutrients is that finite recourses are used in the production of mineral fertilizers. Forinstance the limited economical life-span of phosphorus rock might lead to globalconsequences such as unequal distribution of the fertilizers which can increase thehunger around the …
nulägesanalys och utvecklingsförslag
… this a farmer can grant him- or herself, if using sewage sludge as a phosphorusfertilizer. Possible differences in plant availability between sludge phosphorus precipitatedby iron, aluminum or calcium integrations were studied in a sandy soil at two pH levels.The sludges were …
krukförsök i växthus där järn-, aluminium- respektive kalkfällt slam använts som fosforgödselmedel
… this a farmer can grant him- or herself, if using sewage sludge as a phosphorusfertilizer. Possible differences in plant availability between sludge phosphorus precipitatedby iron, aluminum or calcium integrations were studied in a sandy soil at two pH levels.The sludges were …
… resource, rich in plant nutrients, which could replace parts of the commercial fertilizers used in Sweden today. Sewage sludge may contain large amounts of pathogens, such as Campylobacter and Salmonella, why use can cause severe spreading of infections, both to animals and …
… the cotton production is very stressful for the environment. Toxic chemicals, fertilizers and big amounts of water are used during the cultivation. As the cotton crop is extremely resource intensive all clothing companies must demonstrate their commitment to this issue. This can …
a study of the input factor market in Kenya
… that already use other inputs such as animal manure, hired labor and chemical fertilizer should also have a demand for improved seeds according to Liebig's law of minimum and expansion path theory. The regression showed that income, the use of chemical fertilizer, animal manure …
… 830 kg ha-1 nitrogen, 408 kg ha-1 phosphorus and 736 kg ha-1 potassium as NPK fertilizer during six consecutive years. Results showed that fertilization had contributed to a 20% significantly larger tree biomass. The results also indicated a higher nutrient content in the …
substance flow analysis on a regional level
… combustion. Agriculture contains the largest Nr flows, consisting of mineral fertilizer, deposition and nitrogen fixation. In agriculture, animal production creates an internal flow in the form of manure and feed from agricultural land. Scania has a large food production, where …
påverkar de ekonomin på växtodlingen
… that service. It is difficult to decide the manure value. It depends on which fertilizer you compare with. In this degree project we have compared the manure with three different fertilizers. We have also interviewed five egg producers that value the manure different.
… clay soils. With equipment like steam ploughs and the possibility to obtain fertilizers, the harvest increased considerably. This increased prosperity provided estate Stureholm with a beatuiful corps de logi, a manor. The trends prevailing in Europe around the turn of the …
… have a high P-retention ability and which after saturation may be used as fertilizers. Four potentially suitable filter materials were tested in batch- and column experiments in this study. In the batch experiments, the following materials were shaken with waste water in time …
… to roughly 125 000 SEK. This report also looks at other bark uses such as soil fertilizer or decontaminator of oil. These alternatives have also been assessed in an investment analysis. They were less profitable than using the bark fore energy. Summing up, the bark is a resource …
