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dc.contributorAl-Gaadi, Khalid A.en_US
dc.contributorMadugundu, Rangaswamyen_US
dc.contributorZeyadaa, Ahmed M.en_US
dc.contributorKayad, Ahmed Galalen_US
dc.contributorBiradar, Chandrashekharen_US
dc.creatorTola, ElKamil H. M.en_US
dc.identifier.citationElKamil H. M. Tola, Khalid A. Al-Gaadi, Rangaswamy Madugundu, Ahmed M. Zeyadaa, Ahmed Galal Kayad, Chandrashekhar Biradar. (28/2/2017). Characterization of spatial variability of soil physicochemical properties and its impact on Rhodes grass productivity. Saudi Journal of Biological Sciences, 24 (2), pp. 421-429.en_US
dc.description.abstractCharacterization of soil properties is a key step in understanding the source of spatial variability in the productivity across agricultural fields. A study on a 16 ha field located in the eastern region of Saudi Arabia was undertaken to investigate the spatial variability of selected soil properties, such as soil compaction ‘SC’, electrical conductivity ‘EC’, pH (acidity or alkalinity of soil) and soil texture and its impact on the productivity of Rhodes grass (Chloris gayana L.). The productivity of Rhodes grass was investigated using the Cumulative Normalized Difference Vegetation Index (CNDVI), which was determined from Landsat-8 (OLI) images. The statistical analysis showed high spatial variability across the experimental field based on SC, clay and silt; indicated by values of the coefficient of variation (CV) of 22.08%, 21.89% and 21.02%, respectively. However, low to very low variability was observed for soil EC, sand and pH; with CV values of 13.94%, 7.20% and 0.53%, respectively. Results of the CNDVI of two successive harvests showed a relatively similar trend of Rhodes grass productivity across the experimental area (r =0.74, p= 0.0001). Soil physicochemical layers of a considerable spatial variability (SC, clay, silt and EC) were utilized to delineate the experimental field into three management zones (MZ-1, MZ-2 and MZ-3); which covered 30.23%, 33.85% and 35.92% of the total area, respectively. The results of CNDVI indicated that the MZ-1 was the most productive zone, as its majoren_US
dc.sourceSaudi Journal of Biological Sciences;24,(2016) Pagination 421-429en_US
dc.subjectgeospatial analysisen_US
dc.titleCharacterization of spatial variability of soil physicochemical properties and its impact on Rhodes grass productivityen_US
dc.typeJournal Articleen_US
cg.creator.idBiradar, Chandrashekhar: 0000-0002-9532-9452en_US
cg.subject.agrovocrhodes grassen_US
cg.subject.agrovocprecision agricultureen_US
cg.subject.agrovocsoil propertiesen_US
cg.contributor.centerInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.contributor.centerKing Saud University, College of Food and Agriculture Sciences - KSU - CFASen_US
cg.contributor.crpCGIAR Research Program on Dryland Systems - DSen_US
cg.contributor.funderCGIAR System Organization - CGIARen_US
cg.contributor.project-lead-instituteInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.coverage.regionWestern Asiaen_US
cg.isijournalISI Journalen_US
dc.identifier.statusOpen accessen_US
cg.journalSaudi Journal of Biological Sciencesen_US

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