{"id":609,"date":"2016-02-05T21:34:02","date_gmt":"2016-02-05T21:34:02","guid":{"rendered":"http:\/\/agrilife.org\/texasrowcrops\/?p=609"},"modified":"2016-03-01T15:22:20","modified_gmt":"2016-03-01T15:22:20","slug":"nitrogen-and-wheat-grain-production-topdress-n-timing-is-critical","status":"publish","type":"post","link":"https:\/\/agrilife.org\/texasrowcrops\/2016\/02\/05\/nitrogen-and-wheat-grain-production-topdress-n-timing-is-critical\/","title":{"rendered":"Nitrogen and Wheat Grain Production\u2014Topdress N Timing is Critical"},"content":{"rendered":"<p>by Dr. Calvin Trostle, Extension Agronomy, Lubbock, 806-746-6101, <a href=\"mailto:ctrostle@ag.tamu.edu\">ctrostle@ag.tamu.edu<\/a>;<br \/>\nDr. Clark Neely, Extension State Small Grains Specialist, College Station, 979-862-1412, <a href=\"mailto:cbn108@tamu.edu\">cbn108@tamu.edu<\/a><\/p>\n<p>AgriLife Extension staff across Texas often observe a common misunderstanding about N fertilizer\/N topdress timing and wheat grain production. Many producers don&#8217;t realize the critical timing of topdress N on wheat\u2014<em>and<\/em> <em>are often not applying topdress N soon enough if they are going to grain<\/em>. Thus they are losing yield potential.<\/p>\n<p>In other winter wheat production regions of the U.S., farmers usually think of Spring topdressing, but in Texas\u2014even in the Panhandle\u2014we should view N application as \u2018Late Winter\u2019 topdressing. To some, Spring means calendar March 21, but that is late for almost all Texas wheat.<\/p>\n<p><span style=\"text-decoration: underline;\">Properly timed topdress N for wheat is tied to a critical growth stage.<\/span> What you visually see in the field is \u2018jointing,\u2019 that is, you begin to notice a few stems here and there coupled with erect growth. If you rub the lower stem between your thumb and forefinger you may feel a small \u2018bee-bee,\u2019 or node, within the stem. This means the growing point for that individual stem is differentiating, i.e., the growing point has switched over from producing another leaf to now determining potential head size (spikelet number, potential seeds per spikelet, Fig. 1). This is an important component of yield potential. Because this process for an individual head only lasts about 7 to 10 days, when you see the first few joints then most of the rest of the field has probably initiated growing point differentiation.<\/p>\n<div id=\"attachment_610\" style=\"width: 310px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/agrilife.org\/texasrowcrops\/2016\/02\/05\/nitrogen-and-wheat-grain-production-topdress-n-timing-is-critical\/figure-1-trostle\/\" rel=\"attachment wp-att-610\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-610\" class=\"size-medium wp-image-610\" src=\"https:\/\/agrilife.org\/texasrowcrops\/files\/2016\/02\/Figure-1-Trostle-300x225.jpg\" alt=\"Figure 1. Sliced wheat stem reveals young growing point differentiation with hollow stem to the right. Growing point differentiation\u2014spikelet number and seeds per spikelet\u2014is likely complete. (Photo courtesy Dr. Rob Duncan.)\" width=\"300\" height=\"225\" srcset=\"https:\/\/agrilife.org\/texasrowcrops\/files\/2016\/02\/Figure-1-Trostle-300x225.jpg 300w, https:\/\/agrilife.org\/texasrowcrops\/files\/2016\/02\/Figure-1-Trostle.jpg 480w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-610\" class=\"wp-caption-text\"><strong>Figure 1<\/strong>. Sliced wheat stem reveals young growing point differentiation with hollow stem to the right. Growing point differentiation\u2014spikelet number and seeds per spikelet\u2014is likely complete. (Photo courtesy Dr. Rob Duncan.)<\/p><\/div>\n<p>To ensure that developing grain yield potential is not limited at this point, sufficient N must not only be \u201con the field,\u201d but it also must be <strong>in the root zone<\/strong> as a result of rain, melting snow, or irrigation. Until this happens wheat might experience inadequate N resources to drive yield potential higher. (If you grow irrigated wheat, ensuring growing conditions have adequate moisture is likewise important for yield.) Current recommendations suggest applying 1\/3 of N requirement in the fall followed by 2\/3 applied at topdress.<\/p>\n<p>The full guide for N topdressing with the above title, developed for the Texas High Plains, is also directly applicable for the Rolling Plains and Concho Valley. \u201cNitrogen and Wheat Grain Production\u2014Topdress N Timing is Critical,\u201d contains two sections relating to N topdressing for wheat grain:<\/p>\n<p style=\"padding-left: 30px;\"><strong>\u2022<\/strong> The growth stages of growing point differentiation and jointing (Feekes 5.0) are described and why they are important;<br \/>\n<strong>\u2022<\/strong> Using a question-and-answer format (subtitled \u2018Sixteen Questions about N for Wheat Grain, Texas High Plains), we explain different aspects of topdressing N on wheat and how producers can determine the target amount of N application, manage the timing, deal with exceptions including weather factors, etc. Example questions among the sixteen discussed include:<\/p>\n<p style=\"padding-left: 120px;\">#1) What is the general N requirement for wheat grain production?<br \/>\n#5) Is there any benefit for N applied after jointing? What if I am late applying my N, should I still do it?<br \/>\n#8) There is a good chance of rain or snow in the forecast. Should I go ahead and apply my topdress N a few weeks earlier than otherwise expected?<\/p>\n<p>For a copy of the High Plains report on topdressing N in wheat, consult the full edition of this document at <a href=\"https:\/\/lubbock.tamu.edu\">https:\/\/lubbock.tamu.edu\u00a0 <\/a>for the link entitled \u201cNitrogen Topdress for Wheat\u2014Sixteen Questions.\u201d Principles of this report are applicable to South, Central, and Northeast Texas as well, though timing will move forward on the calendar to match wheat growth stage. In most years, the majority of South and Central Texas should consider topdress timing beginning in late January and into February. This past fall was quite wet which delayed planting of many wheat fields into December and in a few cases even into January. In these cases, jointing likely will not occur until later in February and thus topdress can also be delayed as well.<\/p>\n<div id=\"attachment_137\" style=\"width: 235px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/agrilife.org\/texasrowcrops\/2015\/03\/04\/24-d-and-sensitivity-in-small-grains\/trostle-pic-2014\/\" rel=\"attachment wp-att-137\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-137\" class=\"size-medium wp-image-137\" src=\"https:\/\/agrilife.org\/texasrowcrops\/files\/2015\/03\/Trostle-Pic-2014-e1435930962627-225x300.jpg\" alt=\"Calvin Trostle Professor and Extension Specialist Lubbock, TX 803.746.6101 ctrostle@ag.tamu.edu\" width=\"225\" height=\"300\" srcset=\"https:\/\/agrilife.org\/texasrowcrops\/files\/2015\/03\/Trostle-Pic-2014-e1435930962627-225x300.jpg 225w, https:\/\/agrilife.org\/texasrowcrops\/files\/2015\/03\/Trostle-Pic-2014-e1435930962627-768x1024.jpg 768w, https:\/\/agrilife.org\/texasrowcrops\/files\/2015\/03\/Trostle-Pic-2014-e1435930962627.jpg 1224w\" sizes=\"auto, (max-width: 225px) 100vw, 225px\" \/><\/a><p id=\"caption-attachment-137\" class=\"wp-caption-text\">Calvin Trostle<br \/>Professor and Extension Specialist<br \/>Lubbock, TX<br \/>803.746.6101<br \/><a href=\"mailto:ctrostle@ag.tamu.edu\">ctrostle@ag.tamu.edu<\/a><\/p><\/div>\n","protected":false},"excerpt":{"rendered":"<p>by Dr. Calvin Trostle, Extension Agronomy, Lubbock, 806-746-6101, ctrostle@ag.tamu.edu; Dr. Clark Neely, Extension State Small Grains Specialist, College Station, 979-862-1412, cbn108@tamu.edu AgriLife Extension staff across Texas often observe a common misunderstanding about N fertilizer\/N topdress timing and wheat grain production. Many producers don&#8217;t realize the critical timing of topdress N on wheat\u2014and are often not applying topdress N soon enough if they are going to grain. Thus they are losing yield potential. In other winter wheat production regions of the U.S., farmers usually think of Spring topdressing, but&#8230; <span class=\"read-more\"><a href=\"https:\/\/agrilife.org\/texasrowcrops\/2016\/02\/05\/nitrogen-and-wheat-grain-production-topdress-n-timing-is-critical\/\">Read More &rarr;<\/a><\/span><\/p>\n","protected":false},"author":1150,"featured_media":610,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[30,16],"tags":[],"class_list":["post-609","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-30","category-archive"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Nitrogen and Wheat Grain Production\u2014Topdress N Timing is Critical - Texas Row Crops Newsletter<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/agrilife.org\/texasrowcrops\/2016\/02\/05\/nitrogen-and-wheat-grain-production-topdress-n-timing-is-critical\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Nitrogen and Wheat Grain Production\u2014Topdress N Timing is Critical - Texas Row Crops Newsletter\" \/>\n<meta property=\"og:description\" content=\"by Dr. Calvin Trostle, Extension Agronomy, Lubbock, 806-746-6101, ctrostle@ag.tamu.edu; Dr. Clark Neely, Extension State Small Grains Specialist, College Station, 979-862-1412, cbn108@tamu.edu AgriLife Extension staff across Texas often observe a common misunderstanding about N fertilizer\/N topdress timing and wheat grain production. Many producers don&#8217;t realize the critical timing of topdress N on wheat\u2014and are often not applying topdress N soon enough if they are going to grain. Thus they are losing yield potential. In other winter wheat production regions of the U.S., farmers usually think of Spring topdressing, but... Read More &rarr;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/agrilife.org\/texasrowcrops\/2016\/02\/05\/nitrogen-and-wheat-grain-production-topdress-n-timing-is-critical\/\" \/>\n<meta property=\"og:site_name\" content=\"Texas Row Crops Newsletter\" \/>\n<meta property=\"article:published_time\" content=\"2016-02-05T21:34:02+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2016-03-01T15:22:20+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/agrilife.org\/texasrowcrops\/files\/2016\/02\/Figure-1-Trostle.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"480\" \/>\n\t<meta property=\"og:image:height\" content=\"360\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"linda.francis\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"linda.francis\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/agrilife.org\\\/texasrowcrops\\\/2016\\\/02\\\/05\\\/nitrogen-and-wheat-grain-production-topdress-n-timing-is-critical\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/agrilife.org\\\/texasrowcrops\\\/2016\\\/02\\\/05\\\/nitrogen-and-wheat-grain-production-topdress-n-timing-is-critical\\\/\"},\"author\":{\"name\":\"linda.francis\",\"@id\":\"https:\\\/\\\/agrilife.org\\\/texasrowcrops\\\/#\\\/schema\\\/person\\\/ada7ea262aed09397c43de3b66f61523\"},\"headline\":\"Nitrogen and Wheat Grain Production\u2014Topdress N Timing is Critical\",\"datePublished\":\"2016-02-05T21:34:02+00:00\",\"dateModified\":\"2016-03-01T15:22:20+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/agrilife.org\\\/texasrowcrops\\\/2016\\\/02\\\/05\\\/nitrogen-and-wheat-grain-production-topdress-n-timing-is-critical\\\/\"},\"wordCount\":720,\"image\":{\"@id\":\"https:\\\/\\\/agrilife.org\\\/texasrowcrops\\\/2016\\\/02\\\/05\\\/nitrogen-and-wheat-grain-production-topdress-n-timing-is-critical\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/agrilife.org\\\/texasrowcrops\\\/files\\\/2016\\\/02\\\/Figure-1-Trostle.jpg\",\"articleSection\":[\"2016\",\"Archive\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/agrilife.org\\\/texasrowcrops\\\/2016\\\/02\\\/05\\\/nitrogen-and-wheat-grain-production-topdress-n-timing-is-critical\\\/\",\"url\":\"https:\\\/\\\/agrilife.org\\\/texasrowcrops\\\/2016\\\/02\\\/05\\\/nitrogen-and-wheat-grain-production-topdress-n-timing-is-critical\\\/\",\"name\":\"Nitrogen and Wheat Grain Production\u2014Topdress N Timing is Critical - Texas Row Crops Newsletter\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/agrilife.org\\\/texasrowcrops\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/agrilife.org\\\/texasrowcrops\\\/2016\\\/02\\\/05\\\/nitrogen-and-wheat-grain-production-topdress-n-timing-is-critical\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/agrilife.org\\\/texasrowcrops\\\/2016\\\/02\\\/05\\\/nitrogen-and-wheat-grain-production-topdress-n-timing-is-critical\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/agrilife.org\\\/texasrowcrops\\\/files\\\/2016\\\/02\\\/Figure-1-Trostle.jpg\",\"datePublished\":\"2016-02-05T21:34:02+00:00\",\"dateModified\":\"2016-03-01T15:22:20+00:00\",\"author\":{\"@id\":\"https:\\\/\\\/agrilife.org\\\/texasrowcrops\\\/#\\\/schema\\\/person\\\/ada7ea262aed09397c43de3b66f61523\"},\"breadcrumb\":{\"@id\":\"https:\\\/\\\/agrilife.org\\\/texasrowcrops\\\/2016\\\/02\\\/05\\\/nitrogen-and-wheat-grain-production-topdress-n-timing-is-critical\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/agrilife.org\\\/texasrowcrops\\\/2016\\\/02\\\/05\\\/nitrogen-and-wheat-grain-production-topdress-n-timing-is-critical\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/agrilife.org\\\/texasrowcrops\\\/2016\\\/02\\\/05\\\/nitrogen-and-wheat-grain-production-topdress-n-timing-is-critical\\\/#primaryimage\",\"url\":\"https:\\\/\\\/agrilife.org\\\/texasrowcrops\\\/files\\\/2016\\\/02\\\/Figure-1-Trostle.jpg\",\"contentUrl\":\"https:\\\/\\\/agrilife.org\\\/texasrowcrops\\\/files\\\/2016\\\/02\\\/Figure-1-Trostle.jpg\",\"width\":480,\"height\":360,\"caption\":\"Figure 1. Sliced wheat stem reveals young growing point differentiation with hollow stem to the right. Growing point differentiation\u2014spikelet number and seeds per spikelet\u2014is likely complete. (Photo courtesy Dr. Rob Duncan.)\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/agrilife.org\\\/texasrowcrops\\\/2016\\\/02\\\/05\\\/nitrogen-and-wheat-grain-production-topdress-n-timing-is-critical\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/agrilife.org\\\/texasrowcrops\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Nitrogen and Wheat Grain Production\u2014Topdress N Timing is Critical\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/agrilife.org\\\/texasrowcrops\\\/#website\",\"url\":\"https:\\\/\\\/agrilife.org\\\/texasrowcrops\\\/\",\"name\":\"Texas Row Crops Newsletter\",\"description\":\"Meeting AgriLife\u2019s Outreach Mission\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/agrilife.org\\\/texasrowcrops\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/agrilife.org\\\/texasrowcrops\\\/#\\\/schema\\\/person\\\/ada7ea262aed09397c43de3b66f61523\",\"name\":\"linda.francis\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/af6d2c7763c79c5bf4a7d1674d58f1531a1a47d3ce9a6440162f5812214a6382?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/af6d2c7763c79c5bf4a7d1674d58f1531a1a47d3ce9a6440162f5812214a6382?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/af6d2c7763c79c5bf4a7d1674d58f1531a1a47d3ce9a6440162f5812214a6382?s=96&d=mm&r=g\",\"caption\":\"linda.francis\"},\"url\":\"https:\\\/\\\/agrilife.org\\\/texasrowcrops\\\/author\\\/linda-francis\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Nitrogen and Wheat Grain Production\u2014Topdress N Timing is Critical - Texas Row Crops Newsletter","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:\/\/agrilife.org\/texasrowcrops\/2016\/02\/05\/nitrogen-and-wheat-grain-production-topdress-n-timing-is-critical\/","og_locale":"en_US","og_type":"article","og_title":"Nitrogen and Wheat Grain Production\u2014Topdress N Timing is Critical - Texas Row Crops Newsletter","og_description":"by Dr. Calvin Trostle, Extension Agronomy, Lubbock, 806-746-6101, ctrostle@ag.tamu.edu; Dr. Clark Neely, Extension State Small Grains Specialist, College Station, 979-862-1412, cbn108@tamu.edu AgriLife Extension staff across Texas often observe a common misunderstanding about N fertilizer\/N topdress timing and wheat grain production. Many producers don&#8217;t realize the critical timing of topdress N on wheat\u2014and are often not applying topdress N soon enough if they are going to grain. Thus they are losing yield potential. In other winter wheat production regions of the U.S., farmers usually think of Spring topdressing, but... Read More &rarr;","og_url":"https:\/\/agrilife.org\/texasrowcrops\/2016\/02\/05\/nitrogen-and-wheat-grain-production-topdress-n-timing-is-critical\/","og_site_name":"Texas Row Crops Newsletter","article_published_time":"2016-02-05T21:34:02+00:00","article_modified_time":"2016-03-01T15:22:20+00:00","og_image":[{"width":480,"height":360,"url":"https:\/\/agrilife.org\/texasrowcrops\/files\/2016\/02\/Figure-1-Trostle.jpg","type":"image\/jpeg"}],"author":"linda.francis","twitter_card":"summary_large_image","twitter_misc":{"Written by":"linda.francis","Est. reading time":"4 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/agrilife.org\/texasrowcrops\/2016\/02\/05\/nitrogen-and-wheat-grain-production-topdress-n-timing-is-critical\/#article","isPartOf":{"@id":"https:\/\/agrilife.org\/texasrowcrops\/2016\/02\/05\/nitrogen-and-wheat-grain-production-topdress-n-timing-is-critical\/"},"author":{"name":"linda.francis","@id":"https:\/\/agrilife.org\/texasrowcrops\/#\/schema\/person\/ada7ea262aed09397c43de3b66f61523"},"headline":"Nitrogen and Wheat Grain Production\u2014Topdress N Timing is Critical","datePublished":"2016-02-05T21:34:02+00:00","dateModified":"2016-03-01T15:22:20+00:00","mainEntityOfPage":{"@id":"https:\/\/agrilife.org\/texasrowcrops\/2016\/02\/05\/nitrogen-and-wheat-grain-production-topdress-n-timing-is-critical\/"},"wordCount":720,"image":{"@id":"https:\/\/agrilife.org\/texasrowcrops\/2016\/02\/05\/nitrogen-and-wheat-grain-production-topdress-n-timing-is-critical\/#primaryimage"},"thumbnailUrl":"https:\/\/agrilife.org\/texasrowcrops\/files\/2016\/02\/Figure-1-Trostle.jpg","articleSection":["2016","Archive"],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/agrilife.org\/texasrowcrops\/2016\/02\/05\/nitrogen-and-wheat-grain-production-topdress-n-timing-is-critical\/","url":"https:\/\/agrilife.org\/texasrowcrops\/2016\/02\/05\/nitrogen-and-wheat-grain-production-topdress-n-timing-is-critical\/","name":"Nitrogen and Wheat Grain Production\u2014Topdress N Timing is Critical - Texas Row Crops Newsletter","isPartOf":{"@id":"https:\/\/agrilife.org\/texasrowcrops\/#website"},"primaryImageOfPage":{"@id":"https:\/\/agrilife.org\/texasrowcrops\/2016\/02\/05\/nitrogen-and-wheat-grain-production-topdress-n-timing-is-critical\/#primaryimage"},"image":{"@id":"https:\/\/agrilife.org\/texasrowcrops\/2016\/02\/05\/nitrogen-and-wheat-grain-production-topdress-n-timing-is-critical\/#primaryimage"},"thumbnailUrl":"https:\/\/agrilife.org\/texasrowcrops\/files\/2016\/02\/Figure-1-Trostle.jpg","datePublished":"2016-02-05T21:34:02+00:00","dateModified":"2016-03-01T15:22:20+00:00","author":{"@id":"https:\/\/agrilife.org\/texasrowcrops\/#\/schema\/person\/ada7ea262aed09397c43de3b66f61523"},"breadcrumb":{"@id":"https:\/\/agrilife.org\/texasrowcrops\/2016\/02\/05\/nitrogen-and-wheat-grain-production-topdress-n-timing-is-critical\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/agrilife.org\/texasrowcrops\/2016\/02\/05\/nitrogen-and-wheat-grain-production-topdress-n-timing-is-critical\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/agrilife.org\/texasrowcrops\/2016\/02\/05\/nitrogen-and-wheat-grain-production-topdress-n-timing-is-critical\/#primaryimage","url":"https:\/\/agrilife.org\/texasrowcrops\/files\/2016\/02\/Figure-1-Trostle.jpg","contentUrl":"https:\/\/agrilife.org\/texasrowcrops\/files\/2016\/02\/Figure-1-Trostle.jpg","width":480,"height":360,"caption":"Figure 1. Sliced wheat stem reveals young growing point differentiation with hollow stem to the right. Growing point differentiation\u2014spikelet number and seeds per spikelet\u2014is likely complete. (Photo courtesy Dr. Rob Duncan.)"},{"@type":"BreadcrumbList","@id":"https:\/\/agrilife.org\/texasrowcrops\/2016\/02\/05\/nitrogen-and-wheat-grain-production-topdress-n-timing-is-critical\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/agrilife.org\/texasrowcrops\/"},{"@type":"ListItem","position":2,"name":"Nitrogen and Wheat Grain Production\u2014Topdress N Timing is Critical"}]},{"@type":"WebSite","@id":"https:\/\/agrilife.org\/texasrowcrops\/#website","url":"https:\/\/agrilife.org\/texasrowcrops\/","name":"Texas Row Crops Newsletter","description":"Meeting AgriLife\u2019s Outreach Mission","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/agrilife.org\/texasrowcrops\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/agrilife.org\/texasrowcrops\/#\/schema\/person\/ada7ea262aed09397c43de3b66f61523","name":"linda.francis","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/secure.gravatar.com\/avatar\/af6d2c7763c79c5bf4a7d1674d58f1531a1a47d3ce9a6440162f5812214a6382?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/af6d2c7763c79c5bf4a7d1674d58f1531a1a47d3ce9a6440162f5812214a6382?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/af6d2c7763c79c5bf4a7d1674d58f1531a1a47d3ce9a6440162f5812214a6382?s=96&d=mm&r=g","caption":"linda.francis"},"url":"https:\/\/agrilife.org\/texasrowcrops\/author\/linda-francis\/"}]}},"_links":{"self":[{"href":"https:\/\/agrilife.org\/texasrowcrops\/wp-json\/wp\/v2\/posts\/609","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/agrilife.org\/texasrowcrops\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/agrilife.org\/texasrowcrops\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/agrilife.org\/texasrowcrops\/wp-json\/wp\/v2\/users\/1150"}],"replies":[{"embeddable":true,"href":"https:\/\/agrilife.org\/texasrowcrops\/wp-json\/wp\/v2\/comments?post=609"}],"version-history":[{"count":0,"href":"https:\/\/agrilife.org\/texasrowcrops\/wp-json\/wp\/v2\/posts\/609\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/agrilife.org\/texasrowcrops\/wp-json\/wp\/v2\/media\/610"}],"wp:attachment":[{"href":"https:\/\/agrilife.org\/texasrowcrops\/wp-json\/wp\/v2\/media?parent=609"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/agrilife.org\/texasrowcrops\/wp-json\/wp\/v2\/categories?post=609"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/agrilife.org\/texasrowcrops\/wp-json\/wp\/v2\/tags?post=609"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}