{"id":646,"date":"2012-10-09T17:38:13","date_gmt":"2012-10-09T17:38:13","guid":{"rendered":"http:\/\/www.agron.iastate.edu\/glsi\/?p=646"},"modified":"2025-09-29T04:39:05","modified_gmt":"2025-09-29T09:39:05","slug":"precision-of-soil-particle-size-results-using-laser-diffractometry","status":"publish","type":"post","link":"https:\/\/www.agron.iastate.edu\/glsi\/manuscripts\/precision-of-soil-particle-size-results-using-laser-diffractometry\/","title":{"rendered":"Precision of Soil Particle Size Results Using Laser Diffractometry"},"content":{"rendered":"<div class=\"paragraph-widget paragraph-widget--text-html\"><div class=\"text-content\">\n<p>Precision, particularly in terms of repeatability in particle size analysis (PSA), has recently resurfaced as an issue due to the increased use of laser particle size analysis for PSA. Because laser diffractometry produces much more detailed data than does traditional pipette analysis, and because a much smaller sample is used in the analysis, precision or repeatability of laser-produced PSA data is a legitimate concern. For example, of the 1,485 soil samples analyzed in our study, most of which are silty or loamy and each of which was analyzed at least twice, 11.5% changed texture class, from the first to the second PSA measurement. Statistical analysis of these paired, subsample data was therefore used to establish a standard for normal variance among the subsamples, as a test of precision. Subsample pairs with an absolute cumulative bin difference (CBD) of less than one standard deviation above the population&#8217;s mean CBD were determined to have acceptable precision. This approach provides both a simple method for assessing the variation in PSA data sets and establishes a comparable standard for determining when additional measurements are needed to find a more precise result. Researchers may be tempted to simply use mean PSA data for samples that have been run multiple times. However, we found that using the per bin mean for only the two best matching subsamples was the optimal approach. Our analysis also indicates that, as particle size gets coarser (at least within silty\/loamy samples), the precision of laser-generated particle size data generally decreases.<\/p>\n<\/div><\/div>\n\n<div class=\"paragraph-widget paragraph-widget--text-html\"><div class=\"text-content\">\n<p>Miller, B.A. and R.J. Schaetzl. 2012. Precision of soil sample particle size results using laser diffractometry. <a title=\"Precision of soil sample particle size results using laser diffractometry\" href=\"https:\/\/www.soils.org\/publications\/sssaj\/abstracts\/76\/5\/1719\" target=\"_blank\" rel=\"noopener noreferrer\">Soil Science Society of America Journal 76(5):1719-1727. doi:10.2136\/sssaj2011.0303.<\/a><\/p>\n<\/div><\/div>\n\n<div class=\"paragraph-widget paragraph-widget--text-html\"><div class=\"text-content\">\n<p><\/p>\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>Because laser diffractometry produces much more detailed data than does traditional pipette analysis, and because a much smaller sample is used in the analysis, precision or repeatability of laser-produced PSA data is a concern. The approach presented provides both a simple method for assessing the variation in PSA data sets and establishes a comparable standard for determining when additional measurements are needed to find a more precise result.<\/p>\n","protected":false},"author":3216,"featured_media":10945,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"ngg_post_thumbnail":0,"footnotes":""},"categories":[5,7],"tags":[23,64,87,97,107,111,115,122],"class_list":["post-646","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-manuscripts","category-miller","tag-clay","tag-laser-diffractometry","tag-particle-size-analysis","tag-precision","tag-repeatability","tag-sand","tag-silt","tag-soil-sampling"],"acf":[],"featured_image_urls_v2":{"full":["https:\/\/www.agron.iastate.edu\/glsi\/files\/2012\/10\/Precision-of-soil-particle-size-analysis.png",903,643,false],"thumbnail":["https:\/\/www.agron.iastate.edu\/glsi\/files\/2012\/10\/Precision-of-soil-particle-size-analysis-150x150.png",150,150,true],"medium":["https:\/\/www.agron.iastate.edu\/glsi\/files\/2012\/10\/Precision-of-soil-particle-size-analysis-300x214.png",300,214,true],"medium_large":["https:\/\/www.agron.iastate.edu\/glsi\/files\/2012\/10\/Precision-of-soil-particle-size-analysis-768x547.png",768,547,true],"large":["https:\/\/www.agron.iastate.edu\/glsi\/files\/2012\/10\/Precision-of-soil-particle-size-analysis.png",903,643,false],"1536x1536":["https:\/\/www.agron.iastate.edu\/glsi\/files\/2012\/10\/Precision-of-soil-particle-size-analysis.png",903,643,false],"2048x2048":["https:\/\/www.agron.iastate.edu\/glsi\/files\/2012\/10\/Precision-of-soil-particle-size-analysis.png",903,643,false]},"post_excerpt_stackable_v2":"<p>Because laser diffractometry produces much more detailed data than does traditional pipette analysis, and because a much smaller sample is used in the analysis, precision or repeatability of laser-produced PSA data is a concern. The approach presented provides both a simple method for assessing the variation in PSA data sets and establishes a comparable standard for determining when additional measurements are needed to find a more precise result.<\/p>\n","category_list_v2":"<a href=\"https:\/\/www.agron.iastate.edu\/glsi\/category\/manuscripts\/\" rel=\"category tag\">Manuscripts<\/a>, <a href=\"https:\/\/www.agron.iastate.edu\/glsi\/category\/miller\/\" rel=\"category tag\">Miller<\/a>","author_info_v2":{"name":"Bradley Miller","url":"https:\/\/www.agron.iastate.edu\/glsi\/author\/millerba\/"},"comments_num_v2":"0 comments","yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Precision of Soil Particle Size Results Using Laser Diffractometry - Geospatial Laboratory for Soil Informatics<\/title>\n<meta name=\"description\" content=\"The precision of laser diffractometry in particle size analysis is examined, offering methods to assess variation and improve measurement accuracy.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.agron.iastate.edu\/glsi\/manuscripts\/precision-of-soil-particle-size-results-using-laser-diffractometry\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Precision of Soil Particle Size Results Using Laser Diffractometry - Geospatial Laboratory for Soil Informatics\" \/>\n<meta property=\"og:description\" content=\"The precision of laser diffractometry in particle size analysis is examined, offering methods to assess variation and improve measurement accuracy.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.agron.iastate.edu\/glsi\/manuscripts\/precision-of-soil-particle-size-results-using-laser-diffractometry\/\" \/>\n<meta property=\"og:site_name\" content=\"Geospatial Laboratory for Soil Informatics\" \/>\n<meta property=\"article:published_time\" content=\"2012-10-09T17:38:13+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-09-29T09:39:05+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.agron.iastate.edu\/glsi\/files\/2012\/10\/Precision-of-soil-particle-size-analysis.png\" \/>\n\t<meta property=\"og:image:width\" content=\"903\" \/>\n\t<meta property=\"og:image:height\" content=\"643\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Bradley Miller\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Bradley Miller\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.agron.iastate.edu\\\/glsi\\\/manuscripts\\\/precision-of-soil-particle-size-results-using-laser-diffractometry\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.agron.iastate.edu\\\/glsi\\\/manuscripts\\\/precision-of-soil-particle-size-results-using-laser-diffractometry\\\/\"},\"author\":{\"name\":\"Bradley Miller\",\"@id\":\"https:\\\/\\\/www.agron.iastate.edu\\\/glsi\\\/#\\\/schema\\\/person\\\/a96fa0c818314fce5f3928c232490277\"},\"headline\":\"Precision of Soil Particle Size Results Using Laser Diffractometry\",\"datePublished\":\"2012-10-09T17:38:13+00:00\",\"dateModified\":\"2025-09-29T09:39:05+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.agron.iastate.edu\\\/glsi\\\/manuscripts\\\/precision-of-soil-particle-size-results-using-laser-diffractometry\\\/\"},\"wordCount\":283,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/www.agron.iastate.edu\\\/glsi\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.agron.iastate.edu\\\/glsi\\\/manuscripts\\\/precision-of-soil-particle-size-results-using-laser-diffractometry\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.agron.iastate.edu\\\/glsi\\\/files\\\/2012\\\/10\\\/Precision-of-soil-particle-size-analysis.png\",\"keywords\":[\"clay\",\"laser diffractometry\",\"particle size analysis\",\"precision\",\"repeatability\",\"sand\",\"silt\",\"soil sampling\"],\"articleSection\":[\"Manuscripts\",\"Miller\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.agron.iastate.edu\\\/glsi\\\/manuscripts\\\/precision-of-soil-particle-size-results-using-laser-diffractometry\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.agron.iastate.edu\\\/glsi\\\/manuscripts\\\/precision-of-soil-particle-size-results-using-laser-diffractometry\\\/\",\"url\":\"https:\\\/\\\/www.agron.iastate.edu\\\/glsi\\\/manuscripts\\\/precision-of-soil-particle-size-results-using-laser-diffractometry\\\/\",\"name\":\"Precision of Soil Particle Size Results Using Laser Diffractometry - Geospatial Laboratory for Soil Informatics\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.agron.iastate.edu\\\/glsi\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.agron.iastate.edu\\\/glsi\\\/manuscripts\\\/precision-of-soil-particle-size-results-using-laser-diffractometry\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.agron.iastate.edu\\\/glsi\\\/manuscripts\\\/precision-of-soil-particle-size-results-using-laser-diffractometry\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.agron.iastate.edu\\\/glsi\\\/files\\\/2012\\\/10\\\/Precision-of-soil-particle-size-analysis.png\",\"datePublished\":\"2012-10-09T17:38:13+00:00\",\"dateModified\":\"2025-09-29T09:39:05+00:00\",\"description\":\"The precision of laser diffractometry in particle size analysis is examined, offering methods to assess variation and improve measurement accuracy.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.agron.iastate.edu\\\/glsi\\\/manuscripts\\\/precision-of-soil-particle-size-results-using-laser-diffractometry\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.agron.iastate.edu\\\/glsi\\\/manuscripts\\\/precision-of-soil-particle-size-results-using-laser-diffractometry\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.agron.iastate.edu\\\/glsi\\\/manuscripts\\\/precision-of-soil-particle-size-results-using-laser-diffractometry\\\/#primaryimage\",\"url\":\"https:\\\/\\\/www.agron.iastate.edu\\\/glsi\\\/files\\\/2012\\\/10\\\/Precision-of-soil-particle-size-analysis.png\",\"contentUrl\":\"https:\\\/\\\/www.agron.iastate.edu\\\/glsi\\\/files\\\/2012\\\/10\\\/Precision-of-soil-particle-size-analysis.png\",\"width\":903,\"height\":643},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.agron.iastate.edu\\\/glsi\\\/manuscripts\\\/precision-of-soil-particle-size-results-using-laser-diffractometry\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.agron.iastate.edu\\\/glsi\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Precision of Soil Particle Size Results Using Laser Diffractometry\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.agron.iastate.edu\\\/glsi\\\/#website\",\"url\":\"https:\\\/\\\/www.agron.iastate.edu\\\/glsi\\\/\",\"name\":\"Geospatial Laboratory for Soil Informatics\",\"description\":\"Soil Mapping Research at Iowa State University\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.agron.iastate.edu\\\/glsi\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.agron.iastate.edu\\\/glsi\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/www.agron.iastate.edu\\\/glsi\\\/#organization\",\"name\":\"Geospatial Laboratory of Soil Informatics\",\"url\":\"https:\\\/\\\/www.agron.iastate.edu\\\/glsi\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.agron.iastate.edu\\\/glsi\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/www.agron.iastate.edu\\\/glsi\\\/files\\\/2019\\\/06\\\/favicon.ico\",\"contentUrl\":\"https:\\\/\\\/www.agron.iastate.edu\\\/glsi\\\/files\\\/2019\\\/06\\\/favicon.ico\",\"width\":16,\"height\":16,\"caption\":\"Geospatial Laboratory of Soil Informatics\"},\"image\":{\"@id\":\"https:\\\/\\\/www.agron.iastate.edu\\\/glsi\\\/#\\\/schema\\\/logo\\\/image\\\/\"}},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/www.agron.iastate.edu\\\/glsi\\\/#\\\/schema\\\/person\\\/a96fa0c818314fce5f3928c232490277\",\"name\":\"Bradley Miller\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/743e78561251313585ddf27fc4aa4b4d9e076967d63702712d0794a7f92f2418?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/743e78561251313585ddf27fc4aa4b4d9e076967d63702712d0794a7f92f2418?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/743e78561251313585ddf27fc4aa4b4d9e076967d63702712d0794a7f92f2418?s=96&d=mm&r=g\",\"caption\":\"Bradley Miller\"},\"url\":\"https:\\\/\\\/www.agron.iastate.edu\\\/glsi\\\/author\\\/millerba\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Precision of Soil Particle Size Results Using Laser Diffractometry - Geospatial Laboratory for Soil Informatics","description":"The precision of laser diffractometry in particle size analysis is examined, offering methods to assess variation and improve measurement accuracy.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.agron.iastate.edu\/glsi\/manuscripts\/precision-of-soil-particle-size-results-using-laser-diffractometry\/","og_locale":"en_US","og_type":"article","og_title":"Precision of Soil Particle Size Results Using Laser Diffractometry - Geospatial Laboratory for Soil Informatics","og_description":"The precision of laser diffractometry in particle size analysis is examined, offering methods to assess variation and improve measurement accuracy.","og_url":"https:\/\/www.agron.iastate.edu\/glsi\/manuscripts\/precision-of-soil-particle-size-results-using-laser-diffractometry\/","og_site_name":"Geospatial Laboratory for Soil Informatics","article_published_time":"2012-10-09T17:38:13+00:00","article_modified_time":"2025-09-29T09:39:05+00:00","og_image":[{"width":903,"height":643,"url":"https:\/\/www.agron.iastate.edu\/glsi\/files\/2012\/10\/Precision-of-soil-particle-size-analysis.png","type":"image\/png"}],"author":"Bradley Miller","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Bradley Miller","Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.agron.iastate.edu\/glsi\/manuscripts\/precision-of-soil-particle-size-results-using-laser-diffractometry\/#article","isPartOf":{"@id":"https:\/\/www.agron.iastate.edu\/glsi\/manuscripts\/precision-of-soil-particle-size-results-using-laser-diffractometry\/"},"author":{"name":"Bradley Miller","@id":"https:\/\/www.agron.iastate.edu\/glsi\/#\/schema\/person\/a96fa0c818314fce5f3928c232490277"},"headline":"Precision of Soil Particle Size Results Using Laser Diffractometry","datePublished":"2012-10-09T17:38:13+00:00","dateModified":"2025-09-29T09:39:05+00:00","mainEntityOfPage":{"@id":"https:\/\/www.agron.iastate.edu\/glsi\/manuscripts\/precision-of-soil-particle-size-results-using-laser-diffractometry\/"},"wordCount":283,"commentCount":0,"publisher":{"@id":"https:\/\/www.agron.iastate.edu\/glsi\/#organization"},"image":{"@id":"https:\/\/www.agron.iastate.edu\/glsi\/manuscripts\/precision-of-soil-particle-size-results-using-laser-diffractometry\/#primaryimage"},"thumbnailUrl":"https:\/\/www.agron.iastate.edu\/glsi\/files\/2012\/10\/Precision-of-soil-particle-size-analysis.png","keywords":["clay","laser diffractometry","particle size analysis","precision","repeatability","sand","silt","soil sampling"],"articleSection":["Manuscripts","Miller"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/www.agron.iastate.edu\/glsi\/manuscripts\/precision-of-soil-particle-size-results-using-laser-diffractometry\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/www.agron.iastate.edu\/glsi\/manuscripts\/precision-of-soil-particle-size-results-using-laser-diffractometry\/","url":"https:\/\/www.agron.iastate.edu\/glsi\/manuscripts\/precision-of-soil-particle-size-results-using-laser-diffractometry\/","name":"Precision of Soil Particle Size Results Using Laser Diffractometry - Geospatial Laboratory for Soil Informatics","isPartOf":{"@id":"https:\/\/www.agron.iastate.edu\/glsi\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.agron.iastate.edu\/glsi\/manuscripts\/precision-of-soil-particle-size-results-using-laser-diffractometry\/#primaryimage"},"image":{"@id":"https:\/\/www.agron.iastate.edu\/glsi\/manuscripts\/precision-of-soil-particle-size-results-using-laser-diffractometry\/#primaryimage"},"thumbnailUrl":"https:\/\/www.agron.iastate.edu\/glsi\/files\/2012\/10\/Precision-of-soil-particle-size-analysis.png","datePublished":"2012-10-09T17:38:13+00:00","dateModified":"2025-09-29T09:39:05+00:00","description":"The precision of laser diffractometry in particle size analysis is examined, offering methods to assess variation and improve measurement accuracy.","breadcrumb":{"@id":"https:\/\/www.agron.iastate.edu\/glsi\/manuscripts\/precision-of-soil-particle-size-results-using-laser-diffractometry\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.agron.iastate.edu\/glsi\/manuscripts\/precision-of-soil-particle-size-results-using-laser-diffractometry\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.agron.iastate.edu\/glsi\/manuscripts\/precision-of-soil-particle-size-results-using-laser-diffractometry\/#primaryimage","url":"https:\/\/www.agron.iastate.edu\/glsi\/files\/2012\/10\/Precision-of-soil-particle-size-analysis.png","contentUrl":"https:\/\/www.agron.iastate.edu\/glsi\/files\/2012\/10\/Precision-of-soil-particle-size-analysis.png","width":903,"height":643},{"@type":"BreadcrumbList","@id":"https:\/\/www.agron.iastate.edu\/glsi\/manuscripts\/precision-of-soil-particle-size-results-using-laser-diffractometry\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.agron.iastate.edu\/glsi\/"},{"@type":"ListItem","position":2,"name":"Precision of Soil Particle Size Results Using Laser Diffractometry"}]},{"@type":"WebSite","@id":"https:\/\/www.agron.iastate.edu\/glsi\/#website","url":"https:\/\/www.agron.iastate.edu\/glsi\/","name":"Geospatial Laboratory for Soil Informatics","description":"Soil Mapping Research at Iowa State University","publisher":{"@id":"https:\/\/www.agron.iastate.edu\/glsi\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.agron.iastate.edu\/glsi\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/www.agron.iastate.edu\/glsi\/#organization","name":"Geospatial Laboratory of Soil Informatics","url":"https:\/\/www.agron.iastate.edu\/glsi\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.agron.iastate.edu\/glsi\/#\/schema\/logo\/image\/","url":"https:\/\/www.agron.iastate.edu\/glsi\/files\/2019\/06\/favicon.ico","contentUrl":"https:\/\/www.agron.iastate.edu\/glsi\/files\/2019\/06\/favicon.ico","width":16,"height":16,"caption":"Geospatial Laboratory of Soil Informatics"},"image":{"@id":"https:\/\/www.agron.iastate.edu\/glsi\/#\/schema\/logo\/image\/"}},{"@type":"Person","@id":"https:\/\/www.agron.iastate.edu\/glsi\/#\/schema\/person\/a96fa0c818314fce5f3928c232490277","name":"Bradley Miller","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/secure.gravatar.com\/avatar\/743e78561251313585ddf27fc4aa4b4d9e076967d63702712d0794a7f92f2418?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/743e78561251313585ddf27fc4aa4b4d9e076967d63702712d0794a7f92f2418?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/743e78561251313585ddf27fc4aa4b4d9e076967d63702712d0794a7f92f2418?s=96&d=mm&r=g","caption":"Bradley Miller"},"url":"https:\/\/www.agron.iastate.edu\/glsi\/author\/millerba\/"}]}},"_links":{"self":[{"href":"https:\/\/www.agron.iastate.edu\/glsi\/wp-json\/wp\/v2\/posts\/646","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.agron.iastate.edu\/glsi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.agron.iastate.edu\/glsi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.agron.iastate.edu\/glsi\/wp-json\/wp\/v2\/users\/3216"}],"replies":[{"embeddable":true,"href":"https:\/\/www.agron.iastate.edu\/glsi\/wp-json\/wp\/v2\/comments?post=646"}],"version-history":[{"count":2,"href":"https:\/\/www.agron.iastate.edu\/glsi\/wp-json\/wp\/v2\/posts\/646\/revisions"}],"predecessor-version":[{"id":13869,"href":"https:\/\/www.agron.iastate.edu\/glsi\/wp-json\/wp\/v2\/posts\/646\/revisions\/13869"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.agron.iastate.edu\/glsi\/wp-json\/wp\/v2\/media\/10945"}],"wp:attachment":[{"href":"https:\/\/www.agron.iastate.edu\/glsi\/wp-json\/wp\/v2\/media?parent=646"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.agron.iastate.edu\/glsi\/wp-json\/wp\/v2\/categories?post=646"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.agron.iastate.edu\/glsi\/wp-json\/wp\/v2\/tags?post=646"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}