{"id":560176,"date":"2023-03-06T20:36:03","date_gmt":"2023-03-06T17:36:03","guid":{"rendered":"https:\/\/en.buradabiliyorum.com\/how-drought-impacts-corn-yields\/"},"modified":"2023-03-06T20:36:03","modified_gmt":"2023-03-06T17:36:03","slug":"how-drought-impacts-corn-yields","status":"publish","type":"post","link":"https:\/\/buradabiliyorum.com\/en\/how-drought-impacts-corn-yields\/","title":{"rendered":"#How drought impacts corn yields"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-6a3bf05163d3e\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #dd3333;color:#dd3333\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #dd3333;color:#dd3333\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-6a3bf05163d3e\" checked aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/buradabiliyorum.com\/en\/how-drought-impacts-corn-yields\/#%E2%80%9CHow_drought_impacts_corn_yields%E2%80%9D\" >&#8220;How drought impacts corn yields&#8221;<\/a><\/li><\/ul><\/nav><\/div>\n<h1><span class=\"ez-toc-section\" id=\"%E2%80%9CHow_drought_impacts_corn_yields%E2%80%9D\"><\/span>&#8220;How drought impacts corn yields&#8221;<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<div>\n<div class=\"article-gallery lightGallery\">\n<div data-thumb=\"https:\/\/scx1.b-cdn.net\/csz\/news\/tmb\/2023\/how-drought-impacts-co.jpg\" data-src=\"https:\/\/scx2.b-cdn.net\/gfx\/news\/2023\/how-drought-impacts-co.jpg\" data-sub-html=\"Corn cob size decreased with increased drought stress, a sign of severe stress and lower yield. Credit: Dr. Raju Bheemanahalli\">\n<figure class=\"article-img\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/scx1.b-cdn.net\/csz\/news\/800a\/2023\/how-drought-impacts-co.jpg\" alt=\"How drought impacts corn yields\" title=\"Corn cob size decreased with increased drought stress, a sign of severe stress and lower yield. Credit: Dr. Raju Bheemanahalli\" width=\"800\" height=\"530\"\/><figcaption class=\"text-darken text-low-up text-truncate-js text-truncate mt-3\">\n                Corn cob size decreased with increased drought stress, a sign of severe stress and lower yield. Credit: Dr. Raju Bheemanahalli<br \/>\n            <\/figcaption><\/figure>\n<\/div>\n<\/div>\n<p>Corn is a classic American crop. First cultivated in North America thousands of years ago, it now blankets American farmland from coast to coast. The U.S. grows more corn than any other country. And the grain is used for everything from tortilla chips to cow feed, to biofuel.<\/p>\n<section class=\"article-banner first-banner ads-336x280\"><!-- \/4988204\/Phys_Story_InText_Box --><br \/>\n      <\/section>\n<p>But like most crops, corn is facing a new risk\u2014climate change. Climate change isn&#8217;t just making the world warmer. It&#8217;s also changing when and how much rain falls. This leaves more corn farmers at risk of facing drought during part of the growing season.<\/p>\n<p>Unfortunately, not all droughts are created equal. If it strikes at the wrong time, an entire field can be lost.<\/p>\n<p>&#8220;A severe drought during the corn reproductive stage can cause a complete crop failure. Thus, understanding corn responses to drought and managing accordingly is critical for successful corn production,&#8221; says Ranadheer Vennam, graduate student in the Plant and Soil <a href=\"https:\/\/buradabiliyorum.com\/en\/category\/sciencee\/\" data-internallinksmanager029f6b8e52c=\"5\" title=\"Science\" target=\"_blank\" rel=\"noopener\">Science<\/a>s department at Mississippi State University.<\/p>\n<p>Vennam studies how corn responds to drought. In his latest research, Vennam and his lab group looked at how sensitive corn flowering is to drought and the impacts it has for farmers.<\/p>\n<p>Vennam <a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/scisoc.confex.com\/scisoc\/2022am\/meetingapp.cgi\/Paper\/143198\">presented his work<\/a> at the 2022 ASA-CSSA-SSSA annual meeting, held in Baltimore, Maryland.<\/p>\n<p>Corn flowering is rather complex. Each individual ovule sends out a very long silk, which must capture pollen from the tassels above the plant in order to produce a kernel. This requires careful coordination. &#8220;Successful reproduction in corn is all about timing,&#8221; says Dr. Raju Bheemanahalli (Vennam&#8217;s supervisor). &#8220;It takes less than two weeks for corn to pollinate, which is extremely sensitive to stressors, including drought.&#8221;\n<\/p>\n<ul class=\"article-gallery js-article-gallery\">\n<li data-thumb=\"https:\/\/scx1.b-cdn.net\/csz\/news\/tmb\/2023\/how-drought-impacts-co-1.jpg\" data-src=\"https:\/\/scx2.b-cdn.net\/gfx\/news\/2023\/how-drought-impacts-co-1.jpg\" data-sub-html=\"When exposed to severe drought, ears of corn produce much less silk biomass than healthy ears of corn. The silks must emerge from the corn ear at just the right time. Drought affects this critical timing, which can negatively impact the yield. Credit: Dr. Raju Bheemanahalli\">\n<figure class=\"article-img text-center\"><img decoding=\"async\" src=\"https:\/\/scx1.b-cdn.net\/csz\/news\/800\/2023\/how-drought-impacts-co-1.jpg\" alt=\"How drought impacts corn yields\"\/><figcaption class=\"text-left text-darken text-low-up text-truncate mt-3\">\n                    When exposed to severe drought, ears of corn produce much less silk biomass than healthy ears of corn. The silks must emerge from the corn ear at just the right time. Drought affects this critical timing, which can negatively impact the yield. Credit: Dr. Raju Bheemanahalli<br \/>\n                <\/figcaption><\/figure>\n<\/li>\n<li data-thumb=\"https:\/\/scx1.b-cdn.net\/csz\/news\/tmb\/2023\/how-drought-impacts-co-2.jpg\" data-src=\"https:\/\/scx2.b-cdn.net\/gfx\/news\/2023\/how-drought-impacts-co-2.jpg\" data-sub-html=\"As part of the study during the two-week flowering period, the researchers reduced the amount of water each plant received. In the most extreme test, the plants received just 20% of the amount of water they needed. Under severe drought stress (on the right), corn cob quality is poor. Both the number and weight of kernels is greatly reduced. Credit: Mr. Ranadheer Vennam\">\n<figure class=\"article-img text-center\"><img decoding=\"async\" src=\"https:\/\/scx1.b-cdn.net\/csz\/news\/800\/2023\/how-drought-impacts-co-2.jpg\" alt=\"How drought impacts corn yields\"\/><figcaption class=\"text-left text-darken text-low-up text-truncate mt-3\">\n                    As part of the study during the two-week flowering period, the researchers reduced the amount of water each plant received. In the most extreme test, the plants received just 20% of the amount of water they needed. Under severe drought stress (on the right), corn cob quality is poor. Both the number and weight of kernels is greatly reduced. Credit: Mr. Ranadheer Vennam<br \/>\n                <\/figcaption><\/figure>\n<\/li>\n<\/ul>\n<p>To determine the impact drought has on this process, Vennam&#8217;s team exposed corn plants to various levels of drought during flowering. They ran their trial at the R. R. Foil Plant Science Research Center, Mississippi State University. During the two-week flowering period, the researchers reduced the amount of water each plant received. In the most extreme test, the plants received just 20% of the amount of water they needed.<\/p>\n<p>                                              To track how drought affects the plants, the researchers measured how much the silks grew every day. They also measured the final yield and key quality traits of the kernels, like the amount of starch and protein they had. Vennam&#8217;s study also tracked key aspects of plant growth, like the leaf chlorophyll content.<\/p>\n<p>When exposed to severe drought, the ears of corn produced much less silk biomass than healthy ears did. The number of silks was also about one-third lower. Without enough healthy silks, corn ears can&#8217;t grow many kernels. Vennam saw that yield decreased by 90% in the severe drought treatment. This drop in yield came from a severe reduction in both the number of kernels and how much each kernel weighed.<\/p>\n<p>As a comparison, the researchers also tested a month-long drought stress after flowering was over. Even though this drought lasted more than twice as long at this stage, yield wasn&#8217;t affected that much. &#8220;This illustrates the sensitivity of a reproductive stage to drought stress and its timing of it and how stress affects corn production,&#8221; says Bheemanahalli.<\/p>\n<p>With the information gained from this study, the researchers are now trying to make corn more resilient to drought stress. The next step is finding genetics of corn that are naturally able to handle drought better during flowering. If they can succeed in finding these hardier plants, breeders can work to cross these traits into the varieties of corn that farmers want to grow. The result could be better varieties\/ hybrids that can adapt to our changing climate.<\/p>\n<div class=\"d-inline-block text-medium mt-4\">\n<p>\n                                                    Provided by<br \/>\n                                                                                                            American Society of Agronomy<br \/>\n                                                                                                                <a rel=\"nofollow noopener\" target=\"_blank\" class=\"icon_open\" href=\"https:\/\/www.agronomy.org\/\"><br \/>\n                                                            <svg><use href=\"https:\/\/phys.b-cdn.net\/tmpl\/v6\/img\/svg\/sprite.svg#icon_open\" x=\"0\" y=\"0\"\/><\/svg><\/a><\/p><\/div>\n<p>                                        <!-- print only --><\/p>\n<div class=\"d-none d-print-block\">\n<p>                                                <strong>Citation<\/strong>:<br \/>\n                                                How drought impacts corn yields (2023, March 6)<br \/>\n                                                retrieved 6 March 2023<br \/>\n                                                from https:\/\/phys.org\/<a href=\"https:\/\/buradabiliyorum.com\/en\/category\/news\/\" data-internallinksmanager029f6b8e52c=\"2\" title=\"News\" target=\"_blank\" rel=\"noopener\">news<\/a>\/2023-03-drought-impacts-corn-yields.html<\/p>\n<p>                                             This document is subject to copyright. 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Credit: Dr. Raju Bheemanahalli Corn is a classic American crop. First cultivated in North America thousands of years ago, it now blankets American farmland from coast to coast. The U.S. grows more corn than&#8230;<\/p>\n","protected":false},"author":1,"featured_media":560177,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"https:\/\/scx2.b-cdn.net\/gfx\/news\/2023\/how-drought-impacts-co.jpg","fifu_image_alt":"","footnotes":""},"categories":[16],"tags":[],"class_list":["post-560176","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sciencee"],"_links":{"self":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/560176","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/comments?post=560176"}],"version-history":[{"count":0,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/560176\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media\/560177"}],"wp:attachment":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media?parent=560176"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/categories?post=560176"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/tags?post=560176"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}