{"id":80485,"date":"2024-03-25T05:42:11","date_gmt":"2024-03-25T05:42:11","guid":{"rendered":"https:\/\/mohameday987.shop\/staging1\/?p=80485"},"modified":"2024-08-31T12:53:24","modified_gmt":"2024-08-31T12:53:24","slug":"late-blight-on-onion-leaves","status":"publish","type":"post","link":"https:\/\/worldofplants.ai\/en\/late-blight-on-onion-leaves\/","title":{"rendered":"Late blight on onion leaves: symptoms, causes, control"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_81 counter-hierarchy ez-toc-counter-rtl ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of contents of the article<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" 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: #999;color:#999\" 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><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/worldofplants.ai\/en\/late-blight-on-onion-leaves\/#%D8%A3%D8%B3%D8%A8%D8%A7%D8%A8_%D8%A7%D9%84%D9%84%D9%81%D8%AD%D8%A9_%D8%A7%D9%84%D9%85%D8%AA%D8%A3%D8%AE%D8%B1%D8%A9_%D8%B9%D9%84%D9%89_%D8%A7%D9%88%D8%B1%D8%A7%D9%82_%D8%A7%D9%84%D8%A8%D8%B5%D9%84\" >Causes of late blight on onion leaves<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/worldofplants.ai\/en\/late-blight-on-onion-leaves\/#%D8%A3%D8%B9%D8%B1%D8%A7%D8%B6_%D8%A7%D9%84%D9%84%D9%81%D8%AD%D8%A9_%D8%A7%D9%84%D9%85%D8%AA%D8%A7%D8%AE%D8%B1%D8%A9_%D8%B9%D9%84%D9%89_%D8%A7%D9%88%D8%B1%D8%A7%D9%82_%D8%A7%D9%84%D8%A8%D8%B5%D9%84\" >Symptoms of late blight on onion leaves<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/worldofplants.ai\/en\/late-blight-on-onion-leaves\/#%D8%AF%D9%88%D8%B1%D8%A9_%D8%AA%D8%B7%D9%88%D8%B1_%D8%A7%D9%84%D9%84%D9%81%D8%AD%D8%A9_%D8%A7%D9%84%D9%85%D8%AA%D8%A3%D8%AE%D8%B1%D8%A9_%D8%B9%D9%84%D9%89_%D8%A7%D9%88%D8%B1%D8%A7%D9%82_%D8%A7%D9%84%D8%A8%D8%B5%D9%84\" >Development cycle of late blight on onion leaves<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/worldofplants.ai\/en\/late-blight-on-onion-leaves\/#%D8%A7%D9%84%D8%B8%D8%B1%D9%88%D9%81_%D8%A7%D9%84%D9%85%D9%84%D8%A7%D8%A6%D9%85%D8%A9_%D9%84%D8%A5%D9%86%D8%AA%D8%B4%D8%A7%D8%B1_%D8%A7%D9%84%D9%84%D9%81%D8%AD%D8%A9_%D8%A7%D9%84%D9%85%D8%AA%D8%A3%D8%AE%D8%B1%D8%A9_%D8%B9%D9%84%D9%89_%D8%A7%D9%88%D8%B1%D8%A7%D9%82_%D8%A7%D9%84%D8%A8%D8%B5%D9%84\" >Suitable conditions for the spread of late blight on onion leaves<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/worldofplants.ai\/en\/late-blight-on-onion-leaves\/#%D8%A7%D9%84%D8%AE%D8%B3%D8%A7%D8%A6%D8%B1_%D8%A7%D9%84%D9%86%D8%A7%D8%AA%D8%AC%D8%A9_%D8%B9%D9%86_%D8%A5%D9%86%D8%AA%D8%B4%D8%A7%D8%B1_%D8%A7%D9%84%D9%84%D9%81%D8%AD%D8%A9_%D8%A7%D9%84%D9%85%D8%AA%D8%A3%D8%AE%D8%B1%D8%A9_%D8%B9%D9%84%D9%89_%D8%A7%D9%88%D8%B1%D8%A7%D9%82_%D8%A7%D9%84%D8%A8%D8%B5%D9%84\" >Losses resulting from the spread of late blight on onion leaves<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/worldofplants.ai\/en\/late-blight-on-onion-leaves\/#%D9%85%D9%83%D8%A7%D9%81%D8%AD%D8%A9_%D8%A7%D9%84%D9%84%D9%81%D8%AD%D8%A9_%D8%A7%D9%84%D9%85%D8%AA%D8%A3%D8%AE%D8%B1%D8%A9_%D8%B9%D9%84%D9%89_%D8%A7%D9%88%D8%B1%D8%A7%D9%82_%D8%A7%D9%84%D8%A8%D8%B5%D9%84\" >Controlling late blight on onion leaves<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/worldofplants.ai\/en\/late-blight-on-onion-leaves\/#%D8%A7%D9%84%D8%A7%D8%AC%D8%B1%D8%A7%D8%A1%D8%A7%D8%AA_%D8%A7%D9%84%D9%88%D9%82%D8%A7%D8%A6%D9%8A%D8%A9_%D9%84%D9%85%D9%88%D8%AA_%D8%A3%D9%88%D8%B1%D8%A7%D9%82_%D8%A7%D9%84%D8%A8%D8%B5%D9%84_%D9%86%D8%AA%D9%8A%D8%AC%D8%A9_%D8%A7%D9%84%D8%A7%D8%B5%D8%A7%D8%A8%D8%A9_%D8%A8%D8%A7%D9%84%D9%84%D9%81%D8%AD%D8%A9_%D8%A7%D9%84%D9%85%D8%AA%D8%A7%D8%AE%D8%B1%D8%A9\" >Preventive measures for onion leaf death as a result of late blight<\/a><\/li><\/ul><\/nav><\/div>\n\n<p>Late blight is a fungal disease that affects onion leaves, causing dark spots and plant weakness. This article from the \u201cWORLD OF PLANTS\u201d website provides information about the symptoms of late blight on onion leaves and methods of effective prevention and control.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%D8%A3%D8%B3%D8%A8%D8%A7%D8%A8_%D8%A7%D9%84%D9%84%D9%81%D8%AD%D8%A9_%D8%A7%D9%84%D9%85%D8%AA%D8%A3%D8%AE%D8%B1%D8%A9_%D8%B9%D9%84%D9%89_%D8%A7%D9%88%D8%B1%D8%A7%D9%82_%D8%A7%D9%84%D8%A8%D8%B5%D9%84\"><\/span><strong>Causes of late blight on onion leaves<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Disease name: Late blight of onion leaves<\/li>\n\n\n\n<li>Scientific name: <em>Stemphylium vesicarium<\/em><\/li>\n\n\n\n<li>Type of disease: fungal<\/li>\n\n\n\n<li>Disease family: <em>Pleosporaceae<\/em><\/li>\n<\/ul>\n\n\n\n<p>Stemphylium leaf blight or late blight, where Stemphylium fungi infect onion leaves, which overwinter on plant remains and at the beginning of spring infect plants as a secondary infection with some diseases.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%D8%A3%D8%B9%D8%B1%D8%A7%D8%B6_%D8%A7%D9%84%D9%84%D9%81%D8%AD%D8%A9_%D8%A7%D9%84%D9%85%D8%AA%D8%A7%D8%AE%D8%B1%D8%A9_%D8%B9%D9%84%D9%89_%D8%A7%D9%88%D8%B1%D8%A7%D9%82_%D8%A7%D9%84%D8%A8%D8%B5%D9%84\"><\/span><strong>Symptoms of late blight on onion leaves<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Brown, oval-shaped spots appear on the leaves and are soaked in water and darker during the spore formation stage. The infection can become severe and the disease can spread to the rest of the plant, where brown spots spread to the stems and fruits.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%D8%AF%D9%88%D8%B1%D8%A9_%D8%AA%D8%B7%D9%88%D8%B1_%D8%A7%D9%84%D9%84%D9%81%D8%AD%D8%A9_%D8%A7%D9%84%D9%85%D8%AA%D8%A3%D8%AE%D8%B1%D8%A9_%D8%B9%D9%84%D9%89_%D8%A7%D9%88%D8%B1%D8%A7%D9%82_%D8%A7%D9%84%D8%A8%D8%B5%D9%84\"><\/span><strong>Development cycle of late blight on onion leaves<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>When temperatures rise in spring, ascospores are released into the air from the plant debris where the fungus lived, infecting nearby leaves that are usually infected with other diseases such as powdery mildew, insects, heat stress, or exposure to chemicals.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%D8%A7%D9%84%D8%B8%D8%B1%D9%88%D9%81_%D8%A7%D9%84%D9%85%D9%84%D8%A7%D8%A6%D9%85%D8%A9_%D9%84%D8%A5%D9%86%D8%AA%D8%B4%D8%A7%D8%B1_%D8%A7%D9%84%D9%84%D9%81%D8%AD%D8%A9_%D8%A7%D9%84%D9%85%D8%AA%D8%A3%D8%AE%D8%B1%D8%A9_%D8%B9%D9%84%D9%89_%D8%A7%D9%88%D8%B1%D8%A7%D9%82_%D8%A7%D9%84%D8%A8%D8%B5%D9%84\"><\/span><strong>Suitable conditions for the spread of late blight on onion leaves<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Mushrooms need moderate to warm temperatures and high humidity resulting from rainfall or irrigation, and this occurs in the spring, which is the growth season for these fungi.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%D8%A7%D9%84%D8%AE%D8%B3%D8%A7%D8%A6%D8%B1_%D8%A7%D9%84%D9%86%D8%A7%D8%AA%D8%AC%D8%A9_%D8%B9%D9%86_%D8%A5%D9%86%D8%AA%D8%B4%D8%A7%D8%B1_%D8%A7%D9%84%D9%84%D9%81%D8%AD%D8%A9_%D8%A7%D9%84%D9%85%D8%AA%D8%A3%D8%AE%D8%B1%D8%A9_%D8%B9%D9%84%D9%89_%D8%A7%D9%88%D8%B1%D8%A7%D9%82_%D8%A7%D9%84%D8%A8%D8%B5%D9%84\"><\/span><strong>Losses resulting from the spread of late blight on onion leaves<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>The fungus infects onion leaves, which die if the infection is neglected, leading to a decrease in the area for photosynthesis, as the fruits appear smaller and of lower quality.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%D9%85%D9%83%D8%A7%D9%81%D8%AD%D8%A9_%D8%A7%D9%84%D9%84%D9%81%D8%AD%D8%A9_%D8%A7%D9%84%D9%85%D8%AA%D8%A3%D8%AE%D8%B1%D8%A9_%D8%B9%D9%84%D9%89_%D8%A7%D9%88%D8%B1%D8%A7%D9%82_%D8%A7%D9%84%D8%A8%D8%B5%D9%84\"><\/span><strong>Controlling late blight on onion leaves<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" title=\"Late blight on onion leaves: symptoms, causes, control - Plant World - Discover Artificial Intelligence and Agriculture\" src=\"https:\/\/worldofplants.ai\/wp-content\/uploads\/2024\/03\/c-users-ntc-desktop-1-3.png\" alt=\"Late blight on onion leaves: symptoms, causes, control - Plant World - Discover Artificial Intelligence and Agriculture\"\/><figcaption class=\"wp-element-caption\">Onion leaf death due to late blight<\/figcaption><\/figure>\n<\/div>\n\n\n<ol class=\"wp-block-list\">\n<li>Chemical control: Using a fungicide containing phenhexamide, and combating powdery mildew or any disease that appears on the plant quickly to limit the spread of the disease.<\/li>\n\n\n\n<li>Organic control: Use neem oil in cases of insect infestation, remove the remains of infected plants and dispose of them away from the field.<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%D8%A7%D9%84%D8%A7%D8%AC%D8%B1%D8%A7%D8%A1%D8%A7%D8%AA_%D8%A7%D9%84%D9%88%D9%82%D8%A7%D8%A6%D9%8A%D8%A9_%D9%84%D9%85%D9%88%D8%AA_%D8%A3%D9%88%D8%B1%D8%A7%D9%82_%D8%A7%D9%84%D8%A8%D8%B5%D9%84_%D9%86%D8%AA%D9%8A%D8%AC%D8%A9_%D8%A7%D9%84%D8%A7%D8%B5%D8%A7%D8%A8%D8%A9_%D8%A8%D8%A7%D9%84%D9%84%D9%81%D8%AD%D8%A9_%D8%A7%D9%84%D9%85%D8%AA%D8%A7%D8%AE%D8%B1%D8%A9\"><\/span><strong>Preventive measures for onion leaf death as a result of late blight<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Avoid planting onion crops for 3 years in the infected field.<\/li>\n\n\n\n<li>Maintain good fertilization and avoid excessive use of nitrogen.<\/li>\n\n\n\n<li>Maintain appropriate moisture levels in the crop.<\/li>\n\n\n\n<li>Use herbicides properly to avoid plant poisoning.<\/li>\n\n\n\n<li>Sterilize agricultural tools before use.<\/li>\n<\/ol>\n\n\n\n<p>In conclusion, we would like to note that we, at the world of plants website, offer you all the necessary services in the world of plants, we provide all farmers and those interested in plants with three main services::-<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong><a href=\"https:\/\/worldofplants.ai\/en\/consulting\/?utm_source=blog&amp;utm_medium=article bottom&amp;utm_id=blog\" data-type=\"link\" data-id=\"https:\/\/worldofplants.ai\/consulting?utm_source=blog&amp;utm_medium=article+bottom&amp;utm_id=blog\">Artificial intelligence consulting service to help you identify diseases that affect plants and how to deal with them<\/a><\/strong>.<\/li>\n\n\n\n<li><strong><a href=\"https:\/\/worldofplants.ai\/en\/blog\/?utm_source=blog&amp;utm_medium=article bottom&amp;utm_id=blog\" data-type=\"link\" data-id=\"https:\/\/worldofplants.ai\/blog?utm_source=blog&amp;utm_medium=article+bottom&amp;utm_id=blog\">Blog about plants, plant diseases and care of various crops<\/a><\/strong> ... You are currently browsing one of her articles right now.<\/li>\n\n\n\n<li>An application that provides agricultural consultations to clients, as well as a service for imaging diseases and knowing their treatment for free \u2013 <strong><a href=\"https:\/\/play.google.com\/store\/apps\/details?id=com.slyd4r.worldofplants\" data-type=\"link\" data-id=\"https:\/\/play.google.com\/store\/apps\/details?id=com.slyd4r.worldofplants\" target=\"_blank\" rel=\"noopener\">Click to download the Android version from Google Play Store<\/a><\/strong>\u060c <a href=\"https:\/\/apps.apple.com\/us\/app\/%D8%B9%D8%A7%D9%84%D9%85-%D8%A7%D9%84%D9%86%D8%A8%D8%A7%D8%AA%D8%A7%D8%AA\/id6479358008\" data-type=\"link\" data-id=\"https:\/\/apps.apple.com\/us\/app\/%D8%B9%D8%A7%D9%84%D9%85-%D8%A7%D9%84%D9%86%D8%A8%D8%A7%D8%AA%D8%A7%D8%AA\/id6479358008\" target=\"_blank\" rel=\"noopener\"><strong>Click to download the IOS version from the Apple App Store<\/strong><\/a>.<\/li>\n<\/ol>\n\n\n\n<p><strong>Sources:<\/strong><\/p>\n\n\n\n<p><a href=\"https:\/\/vegpath.plantpath.wisc.edu\/diseases\/onion-stemphylium-leaf-blight\/\" target=\"_blank\" rel=\"noopener\">Onion Stemphylium Leaf Blight &#8211; University of Wisconsin-Madison<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Late blight is a fungal disease that affects onion leaves, causing dark spots and plant weakness. This article from the \u201cWORLD OF PLANTS\u201d website provides information about the symptoms of late blight on onion leaves and methods of effective prevention and control.<\/p>","protected":false},"author":1,"featured_media":80490,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1,356],"tags":[],"class_list":{"0":"post-80485","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","6":"hentry","7":"category-uncategorized","8":"category-356","9":"category-1","11":"description-off"},"acf":[],"_links":{"self":[{"href":"https:\/\/worldofplants.ai\/en\/wp-json\/wp\/v2\/posts\/80485","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/worldofplants.ai\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/worldofplants.ai\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/worldofplants.ai\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/worldofplants.ai\/en\/wp-json\/wp\/v2\/comments?post=80485"}],"version-history":[{"count":5,"href":"https:\/\/worldofplants.ai\/en\/wp-json\/wp\/v2\/posts\/80485\/revisions"}],"predecessor-version":[{"id":87246,"href":"https:\/\/worldofplants.ai\/en\/wp-json\/wp\/v2\/posts\/80485\/revisions\/87246"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/worldofplants.ai\/en\/wp-json\/wp\/v2\/media\/80490"}],"wp:attachment":[{"href":"https:\/\/worldofplants.ai\/en\/wp-json\/wp\/v2\/media?parent=80485"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/worldofplants.ai\/en\/wp-json\/wp\/v2\/categories?post=80485"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/worldofplants.ai\/en\/wp-json\/wp\/v2\/tags?post=80485"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}