Sirisena, D.N.Atkinson, D.2014-12-162014-12-162000Journal of the Soil Science Society of Sri Lanka, 12:p.34-39https://dl.nsf.gov.lk/handle/1/16281Soil SciencesNitrate contentSoil solutionSoil moisture samplersIn-situ extraction of soil solution using rhizon soil moisture samplers for nitrate determinationArticle