{"id":4646,"date":"2018-07-09T10:37:59","date_gmt":"2018-07-09T13:37:59","guid":{"rendered":"https:\/\/rehagro.com.br\/blog\/?p=4646"},"modified":"2026-01-30T11:57:50","modified_gmt":"2026-01-30T14:57:50","slug":"brusone-no-trigo","status":"publish","type":"post","link":"https:\/\/rehagro.com.br\/blog\/brusone-no-trigo\/","title":{"rendered":"Brusone no trigo: como identificar, principais sintomas e como controlar"},"content":{"rendered":"<p>O trigo pode sofrer com o ataque de diversas doen\u00e7as, que podem afetar desde o in\u00edcio do seu desenvolvimento at\u00e9 o final de seu ciclo e sem o devido tratamento elas podem provocar perdas consider\u00e1veis.<\/p>\n<p>Sendo assim, no cultivo dessa lavoura \u00e9 muito importante saber identificar corretamente essas doen\u00e7as, conhecer suas caracter\u00edsticas e entender a biologia do pat\u00f3geno envolvido. Com essas informa\u00e7\u00f5es em m\u00e3os \u00e9 poss\u00edvel tomar as melhores decis\u00f5es para a prote\u00e7\u00e3o da lavoura.<\/p>\n<p>Com quais <strong><a href=\"https:\/\/rehagro.com.br\/blog\/doencas-do-trigo\/\" target=\"_blank\" rel=\"noopener\">doen\u00e7as voc\u00ea j\u00e1 se deparou na cultura do trigo<\/a><\/strong>? Em qual fase de desenvolvimento da lavoura?<\/p>\n<p>De todas as enfermidades do trigo, <strong>a brusone, chamada de branqueamento da espiga<\/strong>, \u00e9 provavelmente a respons\u00e1vel pelos maiores preju\u00edzos.<\/p>\n<p>Causada pelo fungo <em>Pyricularia grisea <\/em>seus\u00a0danos aparecem durante o espigamento da cultura. Quando sua infesta\u00e7\u00e3o \u00e9 alta e a efici\u00eancia de controle \u00e9 baixa, as perdas podem chegar a 50% no rendimento de gr\u00e3os.<\/p>\n<p>Para conhecer melhor essa doen\u00e7a, fique atento aos <strong>pontos mais importantes sobre a brusone<\/strong> que trataremos a seguir.<\/p>\n<div style=\"background-color: #efefef; padding-left: 10px; padding-right: 5px; border-radius: 10px;\">\n<p>&nbsp;<\/p>\n<p style=\"text-align: center;\"><strong><span style=\"font-size: 14pt;\">Sem tempo para ler agora? Baixe este artigo em PDF!<\/span><\/strong><\/p>\n<p><script charset=\"utf-8\" type=\"text\/javascript\" src=\"\/\/js.hsforms.net\/forms\/embed\/v2.js\"><\/script><br \/>\n<script>\nhbspt.forms.create({\nregion: \"na1\",\nportalId: \"5430441\",\nformId: \"0ced5949-c607-48c5-8d39-f0179ca418eb\"\n});\n<\/script><\/p>\n<\/div>\n<h2>Condi\u00e7\u00f5es ambientais que favorecem a brusone<\/h2>\n<p>A ocorr\u00eancia da doen\u00e7a <strong>\u00e9<\/strong> <strong>favorecida em condi\u00e7\u00f5es de elevada precipita\u00e7\u00e3o pluvial, dias nublados e temperaturas variando entre 24 &#8211; 28\u00b0C.<\/strong> Locais onde o per\u00edodo de orvalho \u00e9 longo, cerca de 15 horas, criam condi\u00e7\u00f5es favor\u00e1veis \u00e0 dissemina\u00e7\u00e3o do pat\u00f3geno, al\u00e9m de um per\u00edodo de 10-14 horas de molhamento sobre as espigas.<\/p>\n<p>Os maiores danos com essa doen\u00e7a ocorrem quando as condi\u00e7\u00f5es descritas coincidem com o per\u00edodo de desenvolvimento da lavoura, que vai do emborrachamento at\u00e9 o gr\u00e3o leitoso.<\/p>\n<p>Uma das maneiras de gerenciar o risco da brusone \u00e9 conhecer as caracter\u00edsticas clim\u00e1ticas do local de cultivo, a \u00e9poca de florescimento da cultivar plantada e integrar essas informa\u00e7\u00f5es \u00e0 \u00e9poca de plantio da lavoura.<\/p>\n<h2>Como ocorre a dissemina\u00e7\u00e3o da doen\u00e7a?<\/h2>\n<p>A brusone <strong>pode sobreviver em sementes infectadas, hospedeiros secund\u00e1rios ou em restos culturais<\/strong>, este \u00faltimo pode ser considerada a principal fonte de in\u00f3culo do pat\u00f3geno.<\/p>\n<p>Seus esporos s\u00e3o pequenos e leves, facilmente dispersos pelo vento e podendo atingir \u00e1reas muito distantes da fonte de origem, parecido com o que ocorre com as ferrugens.<\/p>\n<p>As plantas que podem ser hospedeiras alternativas da brusone s\u00e3o: milho, milheto, arroz, cevada e algumas gram\u00edneas nativas.<\/p>\n<p>Desta forma \u00e9 importante observar a presen\u00e7a de plantas invasoras que podem hospedar o pat\u00f3geno, bem como sucess\u00e3o com plantas hospedeiras em \u00e1reas de ocorr\u00eancia de brusone.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-12086 size-full\" src=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2018\/07\/4-pontos-brusone-no-trigo1-1.jpg\" alt=\"Lavoura de trigo com brusone\" width=\"476\" height=\"360\" srcset=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2018\/07\/4-pontos-brusone-no-trigo1-1.jpg 476w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2018\/07\/4-pontos-brusone-no-trigo1-1-300x227.jpg 300w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2018\/07\/4-pontos-brusone-no-trigo1-1-370x280.jpg 370w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2018\/07\/4-pontos-brusone-no-trigo1-1-270x204.jpg 270w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2018\/07\/4-pontos-brusone-no-trigo1-1-80x60.jpg 80w\" sizes=\"auto, (max-width: 476px) 100vw, 476px\" \/><\/p>\n<h2>Principais sintomas da brusone<\/h2>\n<p>Os principais sintomas<strong> podem ser observados na espiga devido \u00e0 sua descolora\u00e7\u00e3o<\/strong>, ela pode se tornar branca principalmente na sua metade superior (acima do ponto de infec\u00e7\u00e3o).<\/p>\n<p>O principal ponto de infec\u00e7\u00e3o dessa doen\u00e7a na espiga \u00e9 a <strong>r\u00e1quis<\/strong>, a qual uma vez infecta apresenta les\u00f5es escuro-brilhantes.<\/p>\n<p>No campo \u00e9 f\u00e1cil identificar o pat\u00f3geno, pois a espiga fica com uma colora\u00e7\u00e3o dupla, branco-palha acima da infec\u00e7\u00e3o e verde abaixo.<\/p>\n<p>Em uma observa\u00e7\u00e3o atenta da lavoura tamb\u00e9m poss\u00edvel identificar ocorr\u00eancia de brusone nas folhas do trigo, causando les\u00f5es el\u00edpticas com margem de colora\u00e7\u00e3o marrom escuro e centro acinzentado. Os gr\u00e3os nas espigas atacadas pela doen\u00e7a s\u00e3o menores e enrugados, isso ocorre devido \u00e0 interrup\u00e7\u00e3o no fluxo de nutrientes a partir do ponto de infec\u00e7\u00e3o na r\u00e1quis.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-12087 size-full\" src=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2018\/07\/4-pontos-brusone-no-trigo2-1.jpg\" alt=\"Escala diagram\u00e1tica de brusone no trigo\" width=\"410\" height=\"451\" srcset=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2018\/07\/4-pontos-brusone-no-trigo2-1.jpg 410w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2018\/07\/4-pontos-brusone-no-trigo2-1-273x300.jpg 273w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2018\/07\/4-pontos-brusone-no-trigo2-1-370x407.jpg 370w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2018\/07\/4-pontos-brusone-no-trigo2-1-270x297.jpg 270w\" sizes=\"auto, (max-width: 410px) 100vw, 410px\" \/><span style=\"font-size: 10pt;\">Escala diagram\u00e1tica de brusone no trigo. \/ Fonte: EMBRAPA Trigo, Maciel (2015)<\/span><\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-12088 size-full\" src=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2018\/07\/4-pontos-brusone-no-trigo3-1.jpg\" alt=\"Folha de trigo com brusone\" width=\"341\" height=\"339\" srcset=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2018\/07\/4-pontos-brusone-no-trigo3-1.jpg 341w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2018\/07\/4-pontos-brusone-no-trigo3-1-300x298.jpg 300w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2018\/07\/4-pontos-brusone-no-trigo3-1-150x150.jpg 150w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2018\/07\/4-pontos-brusone-no-trigo3-1-270x268.jpg 270w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2018\/07\/4-pontos-brusone-no-trigo3-1-302x300.jpg 302w\" sizes=\"auto, (max-width: 341px) 100vw, 341px\" \/><span style=\"font-size: 10pt;\">Folha de trigo com sintoma de brusone. \/ Fonte: EMBRAPA<\/span><\/p>\n<h2>Como realizar o controle da brusone?<\/h2>\n<p>O controle da brusone \u00e9 <strong>bastante dif\u00edcil<\/strong>, o manejo mais eficiente deve integrar:<\/p>\n<ul>\n<li><strong>Janela de plantio:<\/strong> normalmente a doen\u00e7a se desenvolve menos nos plantios tardios;<\/li>\n<li><strong>Cultivares resistentes:<\/strong> h\u00e1 diferentes n\u00edveis de suscetibilidade nas cultivares comerciais;<\/li>\n<li><strong>Rota\u00e7\u00e3o de culturas:<\/strong> essa pr\u00e1tica n\u00e3o evita a doen\u00e7a, mas ajuda a diminuir a quantidade de inoculo inicial, diminuindo sua incid\u00eancia e o progresso da epidemia no campo;<\/li>\n<li><strong>Controle qu\u00edmico:<\/strong> uma das alternativas \u00e9 o uso de <a href=\"https:\/\/rehagro.com.br\/blog\/fungicidas-agricolas\/\" target=\"_blank\" rel=\"noopener\"><strong>fungicidas<\/strong><\/a> espec\u00edficos em aplica\u00e7\u00e3o preventiva antes do in\u00edcio do espigamento, com uma segunda aplica\u00e7\u00e3o 10-15 dias ap\u00f3s a primeira.<\/li>\n<\/ul>\n<p><a href=\"https:\/\/conteudo.rehagro.com.br\/ebook-tecnologia-aplicacao-defensivos-agricolas?utm_campaign=material-graos&amp;utm_source=ebook-aplicacao-defensivos&amp;utm_medium=blog\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-39621 size-full\" title=\"Clique e baixe o e-book gr\u00e1tis!\" src=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2025\/09\/banner-ebook-tecnologia-defensivos.png\" alt=\"E-book Tecnologia de aplica\u00e7\u00e3o de defensivos agr\u00edcolas\" width=\"980\" height=\"317\" srcset=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2025\/09\/banner-ebook-tecnologia-defensivos.png 980w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2025\/09\/banner-ebook-tecnologia-defensivos-300x97.png 300w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2025\/09\/banner-ebook-tecnologia-defensivos-768x248.png 768w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2025\/09\/banner-ebook-tecnologia-defensivos-370x120.png 370w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2025\/09\/banner-ebook-tecnologia-defensivos-270x87.png 270w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2025\/09\/banner-ebook-tecnologia-defensivos-740x239.png 740w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2025\/09\/banner-ebook-tecnologia-defensivos-150x49.png 150w\" sizes=\"auto, (max-width: 980px) 100vw, 980px\" \/><\/a><\/p>\n<p>Um dos entraves no controle qu\u00edmico \u00e9 a dificuldade de atingir o alvo da aplica\u00e7\u00e3o por conta das caracter\u00edsticas das espiguetas de trigo, o que pode resultar em \u00edndices de controle n\u00e3o satisfat\u00f3rios.<\/p>\n<p>Para melhorar o manejo da brusone \u00e9 necess\u00e1rio ficar atento \u00e0s condi\u00e7\u00f5es clim\u00e1ticas durante a fase reprodutiva da cultura, iniciar a aplica\u00e7\u00e3o de fungicida no final do emborrachamento e repetir a pulveriza\u00e7\u00e3o no florescimento (cerca de 15 dias ap\u00f3s a aplica\u00e7\u00e3o anterior).<\/p>\n<p>Nesse caso, <strong><a href=\"https:\/\/rehagro.com.br\/blog\/uso-de-adjuvantes-em-caldas-de-pulverizacao\/\" target=\"_blank\" rel=\"noopener\">uso de adjuvantes<\/a><\/strong> espec\u00edficos contribui para aumentar a efici\u00eancia da aplica\u00e7\u00e3o.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-12089\" src=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2018\/07\/4-pontos-brusone-no-trigo4-1.jpg\" alt=\"Duas cultivares de trigo\" width=\"479\" height=\"356\" srcset=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2018\/07\/4-pontos-brusone-no-trigo4-1.jpg 479w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2018\/07\/4-pontos-brusone-no-trigo4-1-300x223.jpg 300w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2018\/07\/4-pontos-brusone-no-trigo4-1-370x275.jpg 370w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2018\/07\/4-pontos-brusone-no-trigo4-1-270x201.jpg 270w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2018\/07\/4-pontos-brusone-no-trigo4-1-80x60.jpg 80w\" sizes=\"auto, (max-width: 479px) 100vw, 479px\" \/><span style=\"font-size: 10pt;\">Diferen\u00e7a duas cultivares de trigo em rela\u00e7\u00e3o \u00e0 susceptibilidade a doen\u00e7as.\u00a0<\/span><\/p>\n<h2>Pronto para descobrir os segredos da produ\u00e7\u00e3o de gr\u00e3os?<\/h2>\n<p>O <strong><a href=\"https:\/\/rehagro.com.br\/cursos-livres\/agro-para-todos-descobrindo-a-producao-de-graos?utm_campaign=12253459-mkt-materiais-agr&amp;utm_source=textos&amp;utm_medium=blog\" target=\"_blank\" rel=\"noopener\">Curso Online Agro Para Todos: Descobrindo a Produ\u00e7\u00e3o de Gr\u00e3os<\/a><\/strong> oferece uma forma\u00e7\u00e3o essencial para quem deseja compreender os fundamentos da atividade, desde o ciclo das culturas at\u00e9 os desafios do manejo e da comercializa\u00e7\u00e3o.<\/p>\n<p>Com uma linguagem acess\u00edvel e foco em aplica\u00e7\u00f5es pr\u00e1ticas, voc\u00ea vai aprender os fundamentos da produ\u00e7\u00e3o agr\u00edcola, desde os ciclos das culturas at\u00e9 o manejo de solo, controle de pragas, uso de fertilizantes e an\u00e1lise de custos e margens.<\/p>\n<p>Clique no banner abaixo e d\u00ea o primeiro passo para construir uma base s\u00f3lida na produ\u00e7\u00e3o de gr\u00e3os.<\/p>\n<p><a href=\"https:\/\/rehagro.com.br\/cursos-livres\/agro-para-todos-descobrindo-a-producao-de-graos?utm_campaign=12253459-mkt-materiais-agr&amp;utm_source=textos&amp;utm_medium=blog\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-37524 size-full\" title=\"Clique e saiba mais sobre o curso!\" src=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2025\/05\/banner_agr.jpg\" alt=\"Curso Descobrindo a Produ\u00e7\u00e3o de Gr\u00e3os\" width=\"1200\" height=\"624\" srcset=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2025\/05\/banner_agr.jpg 1200w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2025\/05\/banner_agr-300x156.jpg 300w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2025\/05\/banner_agr-1024x532.jpg 1024w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2025\/05\/banner_agr-768x399.jpg 768w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2025\/05\/banner_agr-370x192.jpg 370w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2025\/05\/banner_agr-270x140.jpg 270w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2025\/05\/banner_agr-740x385.jpg 740w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2025\/05\/banner_agr-150x78.jpg 150w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/a><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-16049 size-medium\" src=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2022\/11\/alessandro-alvarenga-300x96.jpg\" alt=\"Alessandro Alvarenga\" width=\"300\" height=\"96\" srcset=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2022\/11\/alessandro-alvarenga-300x96.jpg 300w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2022\/11\/alessandro-alvarenga-768x246.jpg 768w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2022\/11\/alessandro-alvarenga-370x118.jpg 370w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2022\/11\/alessandro-alvarenga-270x86.jpg 270w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2022\/11\/alessandro-alvarenga-740x237.jpg 740w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2022\/11\/alessandro-alvarenga-150x48.jpg 150w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2022\/11\/alessandro-alvarenga.jpg 975w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>O trigo pode sofrer com o ataque de diversas doen\u00e7as, que podem afetar desde o in\u00edcio do seu desenvolvimento at\u00e9 o final de seu ciclo e sem o devido tratamento elas podem provocar perdas consider\u00e1veis. Sendo assim, no cultivo dessa lavoura \u00e9 muito importante saber identificar corretamente essas doen\u00e7as, conhecer suas caracter\u00edsticas e entender a [&hellip;]<\/p>\n","protected":false},"author":21,"featured_media":12090,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[213],"tags":[524,1068,526,463,255,251,525],"class_list":["post-4646","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-graos","tag-brusone","tag-doencas-do-trigo","tag-grao","tag-lavoura","tag-nutrientes","tag-plantio","tag-trigo"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Brusone no trigo: sintomas, causas e como controlar essa doen\u00e7a<\/title>\n<meta name=\"description\" content=\"De todas as doen\u00e7as do trigo, a brusone \u00e9 provavelmente a respons\u00e1vel pelos maiores preju\u00edzos. 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