Essays about: "phosphorus leakage"

Showing result 21 - 25 of 30 essays containing the words phosphorus leakage.

  1. 21. Effects of forestry on stream water chemistry during autumn : A before and after comparison between a reference and two streams with clear-cut watershed areas

    University essay from Institutionen för ekologi, miljö och geovetenskap

    Author : Engström Linda; [2013]
    Keywords : DOC; forestry; TDN; TP;

    Abstract : Forestry is a large-scale business in many countries, and in northern Sweden a large portion of the Boreal forests is cut. Yet very few studies have investigated the impacts of forestry on the vast number of receiving stream waters. READ MORE

  3. 22. Är kolrika jordar en källa till fosforläckage? : en sammanställning av data från 130 åkerjordar

    University essay from SLU/Dept. of Soil and Environment

    Author : Lisa Reiter; [2013]
    Keywords : fosfor; organiskt material; kol; mineralisering; läckage;

    Abstract : Phosphorus (P) is an essential nutrient but a surplus could lead to eutrophication. Furthermore, the minerals used to produce the mineral phosphate is a non renewable resource. There are in other words several reasons to reduce the leakage of P and the agriculture is one important area to attend. READ MORE

  4. 23. Årlig gödsling med NPK bäst för gröda, miljö och ekonomi

    University essay from SLU/Dept. of Soil and Environment

    Author : David Larsson; [2010]
    Keywords : gödsling; gödslingsstrategi; NPK; gödslingsekonomi; förrådsgödsling; PK;

    Abstract : Yesterdays common fertilizing strategy was to apply phosphor (P) and potassium (K) in thefall a few times in the crop rotation. In the spring only nitrogen (N) was applied. Recent trialsand studies has shown that this strategy, N+P/PK, is ineffective compared with the systemwhere NPK is spread every year in the spring. READ MORE

  5. 24. Är Lerbodaälven verkligen en problemälv? : undersökning av fosforhalter

    University essay from SLU/Dept. of Aquatic Sciences and Assessment

    Author : Tina Persson; [2010]
    Keywords : fosfor; vattenkemiprovtagning; Lerbodaälven; referensvärde;

    Abstract : Lerbodaälven is a river in the municipality of Kil which, due to high phosphorus content is not meeting the requirements for good ecological status according to the Water Framework Directive. The purpose of this report is to investigate the causes for the high content of phosphorus that has been measured in Lerbodaälven between 1995-2010. READ MORE

  6. 25. Strukturkalkningens möjlighet att hindra fosforutlakning : en litteraturstudie

    University essay from SLU/Dept. of Soil and Environment

    Author : Johanna Collin; [2010]
    Keywords : strukturkalkning; kalk; fosfor; utlakning; övergödning;

    Abstract : The purpose of this essay is to find out if liming with Ca(OH2) and CaO can reduce leachingof phosphorus from agricultural land and the problem with eutrophication. This purpose alsoincludes getting knowledge about how to make the phosphorus retained in the soil and beaccessible for the plants. READ MORE