Essays about: "P-AL"

Showing result 1 - 5 of 23 essays containing the word P-AL.

  1. 1. Synergies of nutrient fractions for fertilization in agriculture

    University essay from SLU/Dept. of Biosystems and Technology (from 130101)

    Author : Linda Adjei; [2022]
    Keywords : Phosphorus; Wastewater; Polonite; molybdenum blue spectrophotometry; Fertilizer; Sunflower; Plant growth;

    Abstract : A few countries are controlling the worlds phosphate reserves and this raw material is depleting at a faster rate. Most of the mined phosphate rock comes from Morocco and the Russia area which has unstable security. Studies shows that about 40% of potash export and 28% of nitrogen and phosphorus (P) fertilizer products comes from the Russia area. READ MORE

  3. 2. The role of bed sediments for fractionation of phosphorus in remediated ditches in Sweden

    University essay from SLU/Dept. of Soil and Environment

    Author : Emma Ryding; [2022]
    Keywords : Phosphorus fractionation; agricultural stream; sediment; two-stage ditch; eutrophication;

    Abstract : Sweden’s environmental quality objectives “A varied agricultural landscape” and “Zero eutrophication”, aims to ensure food production while reducing negative impact from fertilizers on the environment. The input ceilings of nutrient concentrations in the Baltic Sea are still critical. READ MORE

  4. 3. Nutrient Retention in Constructed Wetlands

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Johanna Kero; [2022]
    Keywords : Constructed wetlands; nutrient retention; phosphorus; nitrogen; catchment area factors; Anlagda våtmarker; näringsretention; fosfor; kväve; avrinningsområdesfaktorer;

    Abstract : Eutrophication, a surplus of nutrients, is a problem in aquatic environments and one of the Swedish Environmental Goals is that there should be no eutrophication caused by human activities. Constructed wetlands (CW:s) is a measure that could be implemented to decrease the transport of nutrients to water bodies through retention. READ MORE

  5. 4. Hur bra är dagens rekommendationer för markkartering? : förändringar av fosforhalter i svensk åkermark över tid

    University essay from SLU/Dept. of Soil and Environment

    Author : Fabian Ringdahl; [2018]
    Keywords : fosfor; P-AL; markkartering; gödsling; bördighet; fosforgödsel;

    Abstract : For a long time in Sweden, there has been a general practice to perform soil mapping as a basis for manure and lime distribution. The recommendations currently available for how often soil mapping should be performed consist of basic mapping for clay content, organic carbon content, P-AL, K-AL and pH. READ MORE

  6. 5. Till- och bortförsel av fosfor i vallodling

    University essay from SLU/Dept. of Biosystems and Technology (from 130101)

    Author : Petter Gustafsson; [2017]
    Keywords : vall; fosfor; organisk gödsel; stallgödsel; läckage; fosforläckage; fosforrestriktioner;

    Abstract : Syftet med studien är att ta upp de problem som finns med de fosforrestriktioner som finns i samband med organisk gödsling i vallodling. Idén till arbetet kom från rådgivarna på Växa i Halland som har upplevt att flera av deras kunder har problem med att uppfylla fosforrestriktionerna. READ MORE