110 uppsatser · sida 6 av 8
dikningens och gödslingens betydelse vid beskogning på en avslutad torvtäkt i Värmland
… and height growth were observed in the areas where the highest dose of phosphorus and potassium (200g/seedling) was given. The results indicate that the average site growth capacity during a rotation period is 7-8 m3ha -1yr-1 . This is about 40 % higher than the average for all …
ett praktikfall
… used, this gives a cost between 1700 ? 2600 SEK/ha for the equipment. The phosphorus and potassium needs are provided by pig-manure and this improves the profit of the pig-production. I have also investigated which economic prerequisites the farm has to refine the products …
… with high starch and good stalk strength. The corn got 129 kg nitrogen, 28 kg phosphorus and 100 kg potassium. The plant nutrition was given as liquid manure, start nutrition with mineral fertilizers and Nitrogen 27 sulphur. The planting time was the 28 of April, when the soil …
Förutsättningar för återföring av näringsämnen i humanavlopp till odlad mark; Norrköpings kommun som exempel
Studien undersöker om återföring av näringsämnen, huvudsakligen makronäringsämnena kväve och fosfor, från humanavlopp i Norrköpings kommun kan komma att ske på ett sätt som är i linje med naturvetenskapliga kretsloppsprinciper. Frågan om återföring av näringsämnen och dess …
Identifiering av problem samt förslag på åtgärder
… concentrations of BOD and SS. Large releases of oils and greases, nitrogen and phosphorus are also fairly common, as are too high or too low pH levels. The food industry is the most contaminating sector, but also tanneries have great problems with effluents exceeding limits. All …
… pH and alkalinity, but no signs of an ongoing leaching of mineral nitrogen or phosphorus from the surrounding peat. High levels of iron were found, especially in small secondary streams from the peaty lands and also further downstream in Fredstorpsbäcken. Microscope studies of …
… equal to the ones for private sewer systems. The demand for purification of phosphorus was adjusted to if the system was equipped with chemical precipitation or not. Subsurface filters are left without measures. The focus of demands on systems of that kind is set to new …
Höje å
… project started which aimed to reduce high levels of nitrogen and phosphorus that was found in Höje-å by recreating and constructing new ponds and wetlands along the watercourse.The changes, which have taken place, make a difference in the experience of the watercourse. By …
… NK-90 (96 m3 ha-1) followed by control treatment (101 m3 ha-1). Despite extra phosphorus the trial has not reach the target ratio for this nutrient and because of this the trail has potential for higher growth. No visual effect was visible on the root system between broadcast …
… 0.23 mg/kg. The increase is mainly due to anthropogenic activities such as phosphorus fertilizing, liming, import of feed, and atmospheric deposition from industrial emissions. Cadmium in the soil will be taken up by crops and is thereby transferred to humans via food. Carrot is …
… bones but that can only be reached if the cow is in great need of calcium or phosphorus, it's a hormonal regulated process that induces catabolism of bones. Free and available sources of Mg are found in soft tissues and in the extra cellular fluids that includes cerebrospinal …
… because of an interaction between the different nutrients in thefertilizer. Phosphorus increase the crops nitrogen efficiency and potassium increase thephosfor efficiency.Leakage of phosphor must be reduced in order to prevent the ongoing eutrofication of lakes,seas and streams …
… cover. Sewage sludge contains essential nutrients such as nitrogen and phosphorus. Nitrogen is limiting growth on solid ground in Sweden and can therefore be used as fertilizer to increase productivity. In order that the sludge can be spread to forest land it requires first a …
… Mg, Mn, Mo, Na, Ni, P, Pb, S, Zn. The most abundant minerals were potassium, phosphorus and calcium with the values ranging between 34.8 - 3637.6, 29.5 - 255.3 and 7.21 - 94.31 mg/kg respectively. The amount of lead found in New Zealand monofloral honeys was low ranging between …
… a central treatment facility). All systems have a big recycling potential of phosphorus. Blackwater systems and wastewater plants with membrane technology and reverse osmosis are the best systems for recycling of other nutrients such as nitrogen, potassium and sulfur.
