Vis enkel innførsel

dc.contributor.authorPandit, Naba Raj
dc.contributor.authorMulder, Jan
dc.contributor.authorHale, Sarah
dc.contributor.authorMartinsen, Vegard
dc.contributor.authorSchmidt, Hans Peter
dc.contributor.authorCornelissen, Gerard
dc.date.accessioned2018-03-12T09:53:20Z
dc.date.available2018-03-12T09:53:20Z
dc.date.created2018-01-15T07:56:39Z
dc.date.issued2018
dc.identifier.citationScience of the Total Environment. 2018, 1380-1389.nb_NO
dc.identifier.issn0048-9697
dc.identifier.urihttp://hdl.handle.net/11250/2490061
dc.description.abstractWe 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 stress, nutrient stress and acid stress. Experiments involved soils with two dosages of biochar (0.5% and 2% w:w), as well as ones without biochar, in combination with four different dosages of NPK fertilizer, water and lime. Biochar was produced from the invasive shrubby weed Eupatorium adenophorum using flame curtain kilns. This is the first study to alleviate one by one the water stress, nutrient stress and acid stress in order to investigate the mechanisms of biochar effects on soil fertility. Biochar addition increased soil moisture, potassium (K) and plant available phosphorous (P-AL), which all showed significant positive relationship (p < 0.001) with above ground biomass of maize. However, biochar was much more effective at abundant soil watering (+ 311% biomass) than at water-starved conditions (+ 67% biomass), indicating that biochar did increase soil moisture, but that this was not the main reason for the positive biomass growth effects. Biochar addition did have a stronger effect under nutrient-stressed conditions (+ 363%) than under abundant nutrient application (+ 132%). Biochar amendment increased soil pH, but liming and pH had no effect on maize dry biomass, so acidity stress alleviation was not the mechanism of biochar effects on soil fertility. In conclusion, the alleviation of nutrient stress was the probably the main factor contributing to the increased maize biomass production upon biochar addition to this moderately acidic Inceptisol.
dc.language.isoengnb_NO
dc.relation.urihttps://www.sciencedirect.com/science/article/pii/S0048969718300226
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/deed.no*
dc.titleBiochar improves maize growth by alleviation of nutrient stress in a moderately acidic low-input Nepalese soilnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionpublishedVersion
dc.source.pagenumber1380-1389nb_NO
dc.source.journalScience of the Total Environmentnb_NO
dc.identifier.doi10.1016/j.scitotenv.2018.01.022
dc.identifier.cristin1542334
dc.relation.projectNorges forskningsråd: 217918nb_NO
cristin.unitcode192,14,0,0
cristin.unitnameMiljøvitenskap og naturforvaltning
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode2


Tilhørende fil(er)

Thumbnail

Denne innførselen finnes i følgende samling(er)

Vis enkel innførsel

Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal
Med mindre annet er angitt, så er denne innførselen lisensiert som Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal