Browsing Brage NMBU by Author "Krogstad, Tore"

A five year performance evaluation of on-site wastewater treatment at Høyås farm, Ås, Norway

Amosun, Temidayo Paul; Kulchynska, Alina (Master thesis, 2017)

To prevent contamination of surface and groundwater sources, municipalities in Norway maintain strict regulations to control the discharge of treated wastewater. Municipalities with local codes set phosphorus (P) effluent ...

Aggregatstabilitet i jord med ulike nivåer av plantetilgjengelig fosfor

Båtnes, Maria (Master thesis, 2021)

Aggregatstabilitet brukes som et mål for å vurdere en jords strukturelle kvalitet. Det er viktig å opprettholde høy aggregatstabilitet for å bevare jordens produktivitet, minimere jorderosjon og miljøforurensing som følge ...

The agronomic and environmental effects of biochar under field conditions in Norway

O'Toole, Adam Thomas (PhD Thesis;2021:84, Doctoral thesis, 2021)

Biochar is emerging as a promising solution for increasing carbon in soil, improving the fertility of selected soils, and mitigating N2O emissions from agricultural soils. In Norway, biochar is high on the agenda of potential ...

Analysemetoder i dyrkingsmedier : sammenligning av CAT (CaCl2/DTPA) og vannmetoden med KCl/Spurway/Lakanen som analysemetode for plantetilgjengelig næring i organiske dyrkingsmidler

Krogstad, Tore; Hodnebrog, Torfinn; Selmer-Olsen, Alr Reidar (Research report, 2002-04-15)

Prosjektet har hatt som mål å sammenligne analysemetodene KCl, Spurway og Lakanen med de nye metodene CAT (CaCl2/DTPA) og VANN. Bakgrunnen for dette er at CAT (CaCl2/DTPA) og VANN-metoden innføres som mye europeiske ...

Analyser av næringsstoff og suspendert tørrstoff i turbide vannprøver - sammenligning av resultater fra fem ulike laboratorier

Krogstad, Tore; Øgaard, Anne K. Falk; Skarbøvik, Eva (Bioforsk Rapport, Research report, 2013)

Binding og risiko for utlekking av fosfor i jord med høyt fosfornivå

Jayesingha, Monica (Master thesis, 2020)

Høye konsentrasjoner av fosfor i jord på jordbruksarealer har siden 1960-tallet vært knyttet til forurensningsproblematikk i vannforekomster. Målet med denne oppgaven er å undersøke prosesser og mekanismer i jord knyttet ...

Botanical survay of two Norwegian forest Fields, dominated by European Blueberry (Vaccinium myrtillus L.)

Nestby, Rolf; Krogstad, Tore; Hovstad, Knut Anders (Journal article; Peer reviewed, 2017)

n a project focusing on semi-cultivation of European blueberry (EB) from 2008 to 2011, a botanical survey was undertaken in two experimental fields in the municipalities of Snåsa and Lierne in the county of Nord-Trøndelag, ...

Botanical survey of two Norwegian forest fields, dominated by European blueberry (Vaccinium myrtillus L.)

Nestby, Rolf; Krogstad, Tore; Hovstad, Knut Anders (Journal article; Peer reviewed, 2017)

In a project focusing on semi-cultivation of European blueberry (EB) from 2008 to 2011, a botanical survey was undertaken in two experimental fields in the municipalities of Snåsa and Lierne in the county of Nord-Trøndelag, ...

Chemical and mineralogical studies of some soils from Tanzania

Kaaya, Abel; Krogstad, Tore; Digernes, Ivan; Singh, Bal Ram (Research report, 1996-11-05)

Chemical and mineralogical analyses were done on 13 selected samples from soil profiles in Tanzania. It was one sample with a high content of organic matter, one sand sample and eleven clays. The clay samples have a clear ...

Climate effects on land management and stream nitrogen concentrations in small agricultural catchments in Norway

Wenng, Hannah; Bechmann, Marianne; Krogstad, Tore; Skarbøvik, Eva (Journal article; Peer reviewed, 2020)

Land use and climate change can impact water quality in agricultural catchments. The objectives were to assess long-term monitoring data to quantify changes to the thermal growing season length, investigate farmer adaptations ...

Constructed wetlands for wastewater treatment in Nepal

Pandey, Manoj Kumar (PhD Thesis;2015:47, Doctoral thesis, 2017-07-12)

As a result of rural to urban migration over the past five decades small towns are rapidly emerging particularly along the major road network in Nepal. These small towns lack resources and basic infrastructure to accommodate ...

Differensiert fosforgjødsling - betydning for avling og miljø

Fystro, Gustav; Kristoffersen, Annbjørg; Krogstad, Tore; Løes, Anne-Kristin; Lunnan, Tor (Bioforsk Rapport;, Research report, 2012)

Hovedmålet med rapporten har vært å utrede miljøeffekter og avlingsmessige konsekvenser av lave P-gjødslingsnivå i landbruksområder med avrenning til spesielt utsatte vannforekomster. Rapporten er skrevet på oppdrag fra ...

Disentangling the effect of physical and chemical factors on phytoplankton dynamics in a highly eutrophic and turbid lake

Romarheim, Aleksandra Trnic (PhD Thesis;2012:11, Doctoral thesis, 2012)

The fact that nutrients limit primary production in aquatic ecosystems is widely accepted, and phosphorus is demonstrated as the main limiting nutrient in freshwaters. Strict control of phosphorus supply has therefore ...

Drivers of Phosphorus Uptake by Barley Following Secondary Resource Application

Brod, Eva; Øgaard, Anne K. Falk; Krogstad, Tore; Haraldsen, Trond; Frossard, Emmanuel; Oberson, Astrid (Academic article, 2016)

Minable rock phosphate is a finite resource. Replacing mineral phosphorus (P) fertilizer with P-rich secondary resources is one way to manage P more efficiently, but the importance of physicochemical and microbial soil ...

Effect of fertilization, tiller cutting and environment on plant growth and yield of European Blueberry (Vaccinium myrtillus L.) in Norwegian forest fields.

Nestby, Rolf; Martinussen, Inger; Krogstad, Tore; Uleberg, Eivind (Journal article; Peer reviewed, 2014)

BACKGROUND: European blueberry (E. blueberry; Vaccinium myrtillus L.) is a natural resource demanded by the processing industry with potential of domestication. Therefore an investigation of the possibilities of partial ...

Effects of Formic Acid Preservation of Fishbones on the Extractability of Ammonium Lactate–Acetate Soluble Calcium, Phosphorus, Magnesium, and Potassium

Løes, Anne-Kristin; Ahlin, Johan Petter; Ahuja, Ishita; Krogstad, Tore; Smevoll, Ståle; Waag, Hanne (Peer reviewed; Journal article, 2022)

Fishbones contain significant amounts of plant nutrients. Fish residues may be preserved by acidification to pH < 4, which may affect the chemical extractability, and the plant availability of nutrients when applied as ...