Browsing Brage NMBU by Author "Mulder, Jan"
Now showing items 1-20 of 37
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Acid deposition in Asia: Emissions, deposition, and ecosystem effects
Duan, Lei; Yu, Qian; Zhang, Qiang; Wang, Zifa; Pan, Yuepeng; Larssen, Thorjørn; Tang, Jie; Mulder, Jan (Journal article; Peer reviewed, 2016) -
Availability of plant nutrients under conventional farming and conservation farming with and without biochar : a field study of maize on acidic, sandy loam in Zambia
Aas, Rikke Ødegård (Master thesis, 2016)Conservation farming (CF) has been promoted as an alternative and sustainable agricultural practice for many small-scale farmers in Sub-Saharan Africa (SSA) as a means to improve acid, degraded soil. Conservation farming ... -
Biochar application in Malaysian sandy and acid sulfate soils: soil amelioration effects and improved crop production over two cropping seasons
Manickam, Theeba; Cornelissen, Gerard; Bachmann, Robert T.; Ibrahim, Illani Z.; Mulder, Jan; Hale, Sarah (Journal article; Peer reviewed, 2015) -
Biochar effect on maize yield and soil characteristics in five conservation farming sites in Zambia
Cornelissen, Gerard; Martinsen, Vegard; Shitumbanuma, Victor; Alling, Vanja Karin Gunilla; Breedveld, Gijs D.; Rutherford, W.; Sparrevik, Lars Magnus; Hale, Sarah; Obia, Alfred; Mulder, Jan (Journal article; Peer reviewed, 2013)Biochar addition to agricultural soils can improve soil fertility, with the added bonus of climate change mitigation through carbon sequestration. Conservation farming (CF) is precision farming, often combining minimum ... -
Biochar from "Kon Tiki" flame curtain and other kilns: Effects of nutrient enrichment and kiln type on crop yield and soil chemistry
Pandit, Naba Raj; Mulder, Jan; Hale, Sarah; Schmidt, Hans Peter; Cornelissen, Gerard (Journal article; Peer reviewed, 2017)Biochar application to soils has been investigated as a means of improving soil fertility and mitigating climate change through soil carbon sequestration. In the present work, the invasive shrub "Eupatorium adenophorum" ... -
Biochar improves maize growth by alleviation of nutrient stress in a moderately acidic low-input Nepalese soil
Pandit, Naba Raj; Mulder, Jan; Hale, Sarah; Martinsen, Vegard; Schmidt, Hans Peter; Cornelissen, Gerard (Journal article; Peer reviewed, 2018)We studied the role of biochar in improving soil fertility for maize production. The effects of biochar on the alleviation of three potential physical-chemical soil limitations for maize growth were investigated, i.e. water ... -
Cation exchange capacity of biochar: An urgent method modification
Munera-Echeverri, Jose L; Martinsen, Vegard; Strand, Line Tau; Zivanovic, Valentina; Cornelissen, Gerard; Mulder, Jan (Journal article; Peer reviewed, 2018)Biochar, produced through pyrolysis of organic matter, is negatively charged, thus contributing to electrostatic adsorption of cations. However, due to its porous structure and contents of alkaline ashes, the determination ... -
Cation exchange capacity, and amendment effect of gypsum and organic matter on chemical properties of and aggregate stability of bauxite residue
Stubhaug, Hogne Phillips (Master thesis, 2022)Bauksittavfall (BR) er overskotsprodukt frå ekstrahering av alumina frå bauksittmalm. Bak kvart tonn alumina produserast det 1-2 tonn bauksittavfall, og verdas største aluminaraffineri er Hydro Alunorte, som ligg ved byen ... -
Continuous and discontinuous variation in ecosystem carbon stocks with elevation across a treeline ecotone
Speed, James David Mervyn; Martinsen, Vegard; Hester, Alison J.; Holand, Øystein; Mulder, Jan; Mysterud, Atle; Austrheim, Gunnar (Journal article; Peer reviewed, 2015) -
Converting to organic farming and implementing conservation agriculture techniques in the plains of Limagne : an analysis of farmers' trajectory
Pagès, Hugo Francois Maurice (Master thesis, 2019)The change of western countries’ agricultural models is an increasingly needed endeavor. Alternatives to conventional farming practices exist, but only a few farmers have been able to bring about structural change in their ... -
Effect of conservation farming and biochar addition on soil organic carbon quality, nitrogen mineralization, and crop productivity in a light textured Acrisol in the sub-humid tropics
Munera-Echeverri, Jose L; Martinsen, Vegard; Strand, Line Tau; Cornelissen, Gerard; Mulder, Jan (Peer reviewed; Journal article, 2020)Conservation farming (CF), involving basin tillage, residue retention and crop rotation, combined with biochar may help to mitigate negative impacts of conventional agriculture. In this study, the effects of CF on the ... -
Effect of grazing in Norwegian outfields related to the quantity and quality of soil organic carbon and other soil properties
Ellingsen, Tonje Forsethlund (Master thesis, 2022)Utilization of the outfield for grazing have long traditions in Norway. Not only as a pasture, but also mowed to provide food for the winter (Rekdal & Angeloff, 2021). From 1949 to 1999, grazing in Norway changed from ... -
Effect of Soil pH Increase by Biochar on NO, N2O and N2 Production during Denitrification in Acid Soils
Obia, Alfred; Cornelissen, Gerard; Mulder, Jan; Dörsch, Peter (Journal article; Peer reviewed, 2015) -
Effect of soil pH Increase by Biochar on NO, N2O and N2 production during denitrification in acid soils
Obia, Alfred; Cornelissen, Gerard; Mulder, Jan; Dörsch, Peter (Journal article; Peer reviewed, 2015) -
Effects of biochar and crop rotation with pigeon pea on soil phosphorus availability in Mkushi and Kaom, Zambia
Hovden, Ingrid Slettemark (Master thesis, 2022)Low phosphorus (P) availability in sub-Sahara African agriculture strongly effects yield and food production negatively. As fertilizer prices increases, the need for human interventions to increase soil plant available P ... -
The effects of biochar on immobilizing Pb, Zn, Cu and Cd in contaminated soils from the mining sites in Kabwe (Zambia) and Folldal (Norway)
Brandsvoll, Cecilie (Master thesis, 2021)Mining activities and resulting waste products are among the main sources of severe heavy metal pollution in the world. This study aims to examine i) the level of soil contamination, ii) mobility and ii) bioavailability ... -
Effects of conservation farming and biochar on carbon and nitrogen cycling in light textured soils in the sub-humid tropics
Munera-Echeverri, José Luis (PhD thesis;2019:41, Doctoral thesis, 2019) -
Effects of hand-hoe tilled conservation farming on soil quality and carbon stocks under on-farm conditions in Zambia
Martinsen, Vegard; Shitumbanuma, Victor; Mulder, Jan; Ritz, C.; Cornelissen, Gerard (Journal article; Peer reviewed, 2017)Conservation farming (CF) has been promoted in Zambia since the 1980s. Despite long-term practice of CF in Zambia, its effect on soil fertility, including the storage of soil organic matter (SOM), on smallholder farms are ... -
Effects of rotational grazing intensity on the quantity and quality of soil organic carbon in Inner Mongolian grasslands
Kok, Nora Hua Ly (Master thesis, 2021)The aim of this thesis is to assess the effects of rotational grazing at varying grazing intensity on soil organic carbon (SOC) quantity and quality in Inner Mongolia. People of the autonomous region of Inner Mongolia, ... -
Fading positive effect of biochar on crop yield and soil acidity during five growth seasons in an Indonesian Ultisol
Cornelissen, Gerard; Jubaedah, X; Nurida, Neneng; Hale, Sarah; Martinsen, Vegard; Silvani, Ludovica; Mulder, Jan (Peer reviewed; Journal article, 2018)Low fertility limits crop production on acidic soils dominating much of the humid tropics. Biochar may be used as a soil enhancer, but little consensus exists on its effect on crop yield. Here we use a controlled, replicated ...