{"id":80638,"date":"2024-03-25T06:50:14","date_gmt":"2024-03-25T06:50:14","guid":{"rendered":"https:\/\/mohameday987.shop\/staging1\/?p=80638"},"modified":"2024-08-20T18:49:15","modified_gmt":"2024-08-20T18:49:15","slug":"downy-mildew-on-lemon-leaves","status":"publish","type":"post","link":"https:\/\/worldofplants.ai\/en\/downy-mildew-on-lemon-leaves\/","title":{"rendered":"Downy mildew on lemon leaves: symptoms, causes, and 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\/downy-mildew-on-lemon-leaves\/#%D8%A3%D8%B3%D8%A8%D8%A7%D8%A8_%D8%A7%D9%84%D8%A8%D9%8A%D8%A7%D8%B6_%D8%A7%D9%84%D8%B2%D8%BA%D8%A8%D9%8A_%D8%B9%D9%84%D9%89_%D8%A7%D9%88%D8%B1%D8%A7%D9%82_%D8%A7%D9%84%D9%84%D9%8A%D9%85%D9%88%D9%86\" >Causes of downy mildew on lemon 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\/downy-mildew-on-lemon-leaves\/#%D8%A3%D8%B9%D8%B1%D8%A7%D8%B6_%D8%A7%D9%84%D8%A8%D9%8A%D8%A7%D8%B6_%D8%A7%D9%84%D8%B2%D8%BA%D8%A8%D9%8A_%D8%B9%D9%84%D9%89_%D8%A7%D9%88%D8%B1%D8%A7%D9%82_%D8%A7%D9%84%D9%84%D9%8A%D9%85%D9%88%D9%86\" >Symptoms of downy mildew on lemon 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\/downy-mildew-on-lemon-leaves\/#%D8%AF%D9%88%D8%B1%D8%A9_%D8%AA%D8%B7%D9%88%D8%B1_%D8%A7%D9%84%D8%A8%D9%8A%D8%A7%D8%B6_%D8%A7%D9%84%D8%B2%D8%BA%D8%A8%D9%8A_%D8%B9%D9%84%D9%89_%D8%A7%D9%88%D8%B1%D8%A7%D9%82_%D8%A7%D9%84%D9%84%D9%8A%D9%85%D9%88%D9%86\" >Development cycle of downy mildew on lemon 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\/downy-mildew-on-lemon-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%D8%A8%D9%8A%D8%A7%D8%B6_%D8%A7%D9%84%D8%B2%D8%BA%D8%A8%D9%8A_%D8%B9%D9%84%D9%89_%D8%A7%D9%88%D8%B1%D8%A7%D9%82_%D8%A7%D9%84%D9%84%D9%8A%D9%85%D9%88%D9%86\" >Suitable conditions for the spread of downy mildew on lemon 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\/downy-mildew-on-lemon-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%D8%A8%D9%8A%D8%A7%D8%B6_%D8%A7%D9%84%D8%B2%D8%BA%D8%A8%D9%8A_%D8%B9%D9%84%D9%89_%D8%A7%D9%88%D8%B1%D8%A7%D9%82_%D8%A7%D9%84%D9%84%D9%8A%D9%85%D9%88%D9%86\" >Losses resulting from the spread of downy mildew on lemon 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\/downy-mildew-on-lemon-leaves\/#%D9%85%D9%83%D8%A7%D9%81%D8%AD%D8%A9_%D8%A7%D9%84%D8%A8%D9%8A%D8%A7%D8%B6_%D8%A7%D9%84%D8%B2%D8%BA%D8%A8%D9%8A_%D8%B9%D9%84%D9%89_%D8%A7%D9%88%D8%B1%D8%A7%D9%82_%D8%A7%D9%84%D9%84%D9%8A%D9%85%D9%88%D9%86\" >Control of downy mildew on lemon 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\/downy-mildew-on-lemon-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%D8%B1%D8%B6_%D8%A7%D9%84%D8%A8%D9%8A%D8%A7%D8%B6_%D8%A7%D9%84%D8%B2%D8%BA%D8%A8%D9%8A_%D8%B9%D9%84%D9%89_%D8%A7%D9%88%D8%B1%D8%A7%D9%82_%D8%A7%D9%84%D9%84%D9%8A%D9%85%D9%88%D9%86\" >Preventive measures for downy mildew on lemon leaves<\/a><\/li><\/ul><\/nav><\/div>\n\n<p>Downy mildew is a fungal disease that affects lemon leaves and causes a deterioration in the tree's health. In this article from the \u201cWORLD OF PLANTS\u201d website, we discuss the symptoms of downy mildew on lemon leaves and effective prevention and control methods.<\/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%D8%A8%D9%8A%D8%A7%D8%B6_%D8%A7%D9%84%D8%B2%D8%BA%D8%A8%D9%8A_%D8%B9%D9%84%D9%89_%D8%A7%D9%88%D8%B1%D8%A7%D9%82_%D8%A7%D9%84%D9%84%D9%8A%D9%85%D9%88%D9%86\"><\/span><strong>Causes of downy mildew on lemon leaves<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Disease name: Downy mildew on lemon leaves<\/li>\n\n\n\n<li>Scientific name: <em>Oidium citri<\/em><\/li>\n\n\n\n<li>Type of disease: fungal<\/li>\n\n\n\n<li>Disease family: <em>Oomycete<\/em><\/li>\n<\/ul>\n\n\n\n<p>This disease is caused by a fungus <em>Oidium citri <\/em>Which usually spreads in the spring, white to gray fuzzy bumps form on the leaves of the affected plant, which is why the disease is given this name.<\/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%D8%A8%D9%8A%D8%A7%D8%B6_%D8%A7%D9%84%D8%B2%D8%BA%D8%A8%D9%8A_%D8%B9%D9%84%D9%89_%D8%A7%D9%88%D8%B1%D8%A7%D9%82_%D8%A7%D9%84%D9%84%D9%8A%D9%85%D9%88%D9%86\"><\/span><strong>Symptoms of downy mildew on lemon leaves<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Young leaves turn white or gray as a result of the presence of burrs, and in the case of severe infection, they cause deformation of the leaves and buds, leading to the premature fall of leaves and fruits and the death of twigs and branches.<\/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%D8%A8%D9%8A%D8%A7%D8%B6_%D8%A7%D9%84%D8%B2%D8%BA%D8%A8%D9%8A_%D8%B9%D9%84%D9%89_%D8%A7%D9%88%D8%B1%D8%A7%D9%82_%D8%A7%D9%84%D9%84%D9%8A%D9%85%D9%88%D9%86\"><\/span><strong>Development cycle of downy mildew on lemon leaves<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>The disease can be transmitted over long distances by wind, and agricultural equipment such as pruning tools, mechanical harvesters, etc. have a role in transmitting the disease from one plant to another.<\/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%D8%A8%D9%8A%D8%A7%D8%B6_%D8%A7%D9%84%D8%B2%D8%BA%D8%A8%D9%8A_%D8%B9%D9%84%D9%89_%D8%A7%D9%88%D8%B1%D8%A7%D9%82_%D8%A7%D9%84%D9%84%D9%8A%D9%85%D9%88%D9%86\"><\/span><strong>Suitable conditions for the spread of downy mildew on lemon leaves<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>The fungus spreads in shady, poorly ventilated orchards, and it needs moderate to cool temperatures. This is the reason for its spread in the spring, when rainfall is frequent and temperatures remain cool.<\/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%D8%A8%D9%8A%D8%A7%D8%B6_%D8%A7%D9%84%D8%B2%D8%BA%D8%A8%D9%8A_%D8%B9%D9%84%D9%89_%D8%A7%D9%88%D8%B1%D8%A7%D9%82_%D8%A7%D9%84%D9%84%D9%8A%D9%85%D9%88%D9%86\"><\/span><strong>Losses resulting from the spread of downy mildew on lemon leaves<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>If the infestation is neglected, the infestation may develop and may cause other diseases, which greatly reduces tree productivity and fruit quality. Therefore, continuous monitoring of the field and early detection are among the most important factors to avoid major losses in the field.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"976\" height=\"617\" src=\"https:\/\/worldofplants.ai\/wp-content\/uploads\/2024\/03\/word-image-80638-2.jpeg\" alt=\"Downy mildew on lemon leaves - Plant World\" class=\"wp-image-80647\" title=\"Downy mildew on lemon leaves - Plant World\" srcset=\"https:\/\/worldofplants.ai\/wp-content\/uploads\/2024\/03\/word-image-80638-2.jpeg 976w, https:\/\/worldofplants.ai\/wp-content\/uploads\/2024\/03\/word-image-80638-2-300x190.jpeg 300w, https:\/\/worldofplants.ai\/wp-content\/uploads\/2024\/03\/word-image-80638-2-768x486.jpeg 768w\" sizes=\"auto, (max-width: 976px) 100vw, 976px\" \/><figcaption class=\"wp-element-caption\">Parts of the lemon tree are infected with downy mildew<\/figcaption><\/figure>\n<\/div>\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%D8%A8%D9%8A%D8%A7%D8%B6_%D8%A7%D9%84%D8%B2%D8%BA%D8%A8%D9%8A_%D8%B9%D9%84%D9%89_%D8%A7%D9%88%D8%B1%D8%A7%D9%82_%D8%A7%D9%84%D9%84%D9%8A%D9%85%D9%88%D9%86\"><\/span><strong>Control of downy mildew on lemon leaves<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Remove infected leaves and burn them away from the field.<\/li>\n\n\n\n<li>Cleaning the field of harmful plants and plant residues.<\/li>\n\n\n\n<li>Use of pesticides containing dithiocarbamate.<\/li>\n\n\n\n<li>Avoid overhead watering and watering in the early morning hours to prevent providing a damp environment to suppress the spread of the disease.<\/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%D8%B1%D8%B6_%D8%A7%D9%84%D8%A8%D9%8A%D8%A7%D8%B6_%D8%A7%D9%84%D8%B2%D8%BA%D8%A8%D9%8A_%D8%B9%D9%84%D9%89_%D8%A7%D9%88%D8%B1%D8%A7%D9%82_%D8%A7%D9%84%D9%84%D9%8A%D9%85%D9%88%D9%86\"><\/span><strong>Preventive measures for downy mildew on lemon leaves<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Planting disease-resistant varieties.<\/li>\n\n\n\n<li>Determine good distances between trees planted in the field in order to give them proper ventilation and avoid transmitting infection between close trees.<\/li>\n\n\n\n<li>Organizing and sterilizing agricultural tools before use.<\/li>\n\n\n\n<li>Good and moderate fertilization.<\/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:\/\/www.lovethegarden.com\/uk-en\/article\/downy-mildew\" target=\"_blank\" rel=\"noopener\"> Downy mildew &#8211; lovethegarden<br><\/a><a href=\"https:\/\/www.gardeningknowhow.com\/plant-problems\/disease\/downy-mildew.htm\" target=\"_blank\" rel=\"noopener\">Tips For The Control Of Downy Mildew &#8211; gardeningknowhow<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Downy mildew is a fungal disease that affects lemon leaves and causes a deterioration in the tree's health. In this article from the \u201cWORLD OF PLANTS\u201d website, we discuss the symptoms of downy mildew on lemon leaves and effective prevention and control methods.<\/p>","protected":false},"author":1,"featured_media":80643,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[358],"tags":[],"class_list":{"0":"post-80638","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","6":"hentry","7":"category-358","9":"description-off"},"acf":[],"_links":{"self":[{"href":"https:\/\/worldofplants.ai\/en\/wp-json\/wp\/v2\/posts\/80638","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=80638"}],"version-history":[{"count":3,"href":"https:\/\/worldofplants.ai\/en\/wp-json\/wp\/v2\/posts\/80638\/revisions"}],"predecessor-version":[{"id":87191,"href":"https:\/\/worldofplants.ai\/en\/wp-json\/wp\/v2\/posts\/80638\/revisions\/87191"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/worldofplants.ai\/en\/wp-json\/wp\/v2\/media\/80643"}],"wp:attachment":[{"href":"https:\/\/worldofplants.ai\/en\/wp-json\/wp\/v2\/media?parent=80638"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/worldofplants.ai\/en\/wp-json\/wp\/v2\/categories?post=80638"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/worldofplants.ai\/en\/wp-json\/wp\/v2\/tags?post=80638"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}