Browsing Norwegian Geotechnical Institute (NGI) Digital Archive by Author "Martinsen, Vegard"

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    • Bioavailability of Macro and Micronutrients Across Global Topsoils: Main Drivers and Global Change Impacts 

      Ochoa-Hueso, Raúl; Delgado-Baquerizo, Manuel; Risch, Anita C.; Ashton, Louise; Augustine, David; Bélanger, Nicolas; Bridgham, Scott; Britton, Andrea J.; Bruckman, Viktor J.; Camarero, J. Julio; Cornelissen, Gerard; Crawford, John A.; Dijkstra, Feike A.; Diochon, Amanda; Earl, Stevan; Edgerley, James; Epstein, Howard; Felton, Andrew; Fortier, Julien; Gagnon, Daniel; Greer, Ken; Griffiths, Hannah M.; Halde, Caroline; Hanslin, Hans Martin; Harris, Lorna I.; Hartsock, Jeremy A.; Hendrickson, Paul; Hovstad, Knut Anders; Hu, Jia; Jani, Arun D.; Kent, Kelcy; Kerdraon-Byrne, Deirdre; Khalsa, Sat Darshan S.; Lai, Derrick Y. F.; Lambert, France; LaMontagne, Jalene M.; Lavergne, Stéphanie; Lawrence, Beth A.; Littke, Kim; Leeper, Abigail C.; Licht, Mark A.; Liebig, Mark A.; Lynn, Joshua; Maclean, Janet E.; Martinsen, Vegard; McDaniel, Marshall D.; McIntosh, Anne C. S.; Miesel, Jessica R.; Miller, Jim; Mulvaney, Michael J.; Moreno, Gerardo; Newstead, Laura; Pakeman, Robin J.; Pergl, Jan; Pinno, Bradley D.; Piñeiro, Juan; Quigley, Kathleen; Radtke, Troy M.; Reed, Paul; Rolo, Víctor; Rudgers, Jennifer; Rutherford, P. Michael; Sayer, Emma J.; Serrano-Grijalva, Lilia; Strack, Maria; Sukdeo, Nicole; Taylor, Andy F. S.; Truax, Benoit; Tsuji, Leonard J. S.; van Gestel, Natasja; Vaness, Brenda M.; Van Sundert, Kevin; Vítková, Michaela; Weigel, Robert; Wilton, Meaghan J.; Yano, Yuriko; Teen, Ewing; Bremer, Eric (Peer reviewed; Journal article, 2023)

    • 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, 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 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 (Peer reviewed; Journal article, 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 (Peer reviewed; Journal article, 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 ...

    • Effect of biochar on crust formation, penetration resistance and hydraulic properties of two coarse-textured tropical soils 

      Obia, Alfred; Børresen, Trond; Martinsen, Vegard; Cornelissen, Gerard; Mulder, Jan (Peer reviewed; Journal article, 2017)
      Biochar (BC) has been reported to improve a number of soil structural and hydraulic properties but detailed studies are scant on how BC affects crust formation, penetration resistance, water repellency and saturated hydraulic ...

    • 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 ...

    • 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 ...

    • Fourfold Increase in Pumpkin Yield in Response to Low-Dosage Root Zone Application of Urine-Enhanced Biochar to a Fertile Tropical Soil 

      Schmidt, Hans Peter; Pandit, Bishnu Hari; Martinsen, Vegard; Cornelissen, Gerard; Conte, Pellegrino; Kammann, Claudia I. (Journal article, 2015)
      A widely abundant and invasive forest shrub, Eupatorium adenophorum, was pyrolyzed in a cost-efficient flame curtain kiln to produce biochar. The resulting biochar fulfilled all the requirements for premium quality, according ...

    • pH effects of the addition of three biochars to acidic Indonesian mineral soils 

      Martinsen, Vegard; Alling, Vanja Karin Gunilla; Nurida, NL; Mulder, Jan; Hale, Sarah; Ritz, C.; Rutherford, DW; Heikens, Alex; Breedveld, Gijs D.; Cornelissen, Gerard (Peer reviewed; Journal article, 2015)

    • pH effects of the addition of three biochars to acidic Indonesian mineral soils 

      Martinsen, Vegard; Alling, Vanja Karin Gunilla; Nurida, NL; Mulder, Jan; Hale, Sarah; Ritz, C.; Rutherford, DW; Heikens, Alex; Breedveld, Gijs D.; Cornelissen, Gerard (Journal article; Peer reviewed, 2015)

    • Significant build-up of soil organic carbon under climate-smart conservation farming in Sub-Saharan Acrisols 

      Martinsen, Vegard; Munera-Echeverri, Jose L; Obia, Alfred; Cornelissen, Gerard; Mulder, Jan (Journal article; Peer reviewed, 2019)
      Conservation farming (CF) involving minimumtillage, mulching and crop rotation may offer climate change adaptation and mitigation benefits. However, reported effects of CF, as applied by smallholders, on storage of soil ...

    • Vertical and lateral transport of biochar in light-textured tropical soils 

      Obia, Alfred; Børresen, Trond; Martinsen, Vegard; Cornelissen, Gerard; Mulder, Jan (Peer reviewed; Journal article, 2016)
      Field experiments were conducted in Arenosols (loamy fine sand) and Acrisols (sandy loam) in Zambia to quantify vertical and lateral transport of biochar (BC) using the BC and soil 13C isotope signatures and total organic ...