AbstractUsing GIS Technologies to Characterize Plant Growth Track: Agriculture Author(s): Joseph Albano, William Henriques, Kim Bowman A method for characterizing root and shoot growth of citrus was developed using ArcView 3.2 and the ArcView Image Analysis extension. Digital images of citrus plants were analyzed for spectral characteristics using the image categorization tool into distinct spectral categories. The values of pixels associated with tissues of interest were initially identified. Based on this assessment, the categories of interest were calculated to a particular value in the attribute table. A query was then run to select these pixels in the table; these were subsequently converted to a polygon feature. The tissue area of interest was then quantified using the Xtool extension. Joseph Albano USDA-ARS U.S. Horticultural Research Laboratory 2001 S Rock Rd Ft Pierce , FL 34945 USA Phone: 561-462-5939 Fax: 561-462-5986 E-mail: jalbano@ushrl.ars.usda.gov William Henriques Agency for Toxic Substances and Disease Registry Department of Health and Human Services 1600 Clifton Rd NE E56 Atlanta 30333 USA Phone: 404-498-0402 Fax: 404-498-0064 E-mail: wdh2@cdc.gov Kim Bowman USDA-ARS U.S. Horticultural Research Laboratory 2001 S. Rock Rd Ft. Pierce 34945 USA Phone: 561-462-5939 E-mail: kbowman@ushrl.ars.usda.gov |