{"id":7243,"date":"2020-03-31T11:57:30","date_gmt":"2020-03-31T14:57:30","guid":{"rendered":"https:\/\/rehagro.com.br\/blog\/?p=7243"},"modified":"2026-04-08T14:51:40","modified_gmt":"2026-04-08T17:51:40","slug":"nitrogenio-na-cultura-do-cafe","status":"publish","type":"post","link":"https:\/\/rehagro.com.br\/blog\/nitrogenio-na-cultura-do-cafe\/","title":{"rendered":"Nitrog\u00eanio no caf\u00e9: fun\u00e7\u00f5es, defici\u00eancia e c\u00e1lculo de recomenda\u00e7\u00e3o de aduba\u00e7\u00e3o"},"content":{"rendered":"<p>O nitrog\u00eanio (N) \u00e9 o <strong>nutriente mais exigido pelas plantas<\/strong>, e com o caf\u00e9 n\u00e3o seria diferente. A absor\u00e7\u00e3o do nitrog\u00eanio pelas plantas \u00e9 feita via: NO<sub>3<\/sub><sup>&#8211;<\/sup> (n\u00edtrica &#8211; predominante em condi\u00e7\u00f5es naturais), NH<sub>4<\/sub><sup>+<\/sup> (amoniacal), ureia.<\/p>\n<p>O transporte desse elemento \u00e9 feito via xilema, na corrente transpirat\u00f3ria.<\/p>\n<p>O nitrog\u00eanio \u00e9 um nutriente altamente m\u00f3vel, dessa forma, os <strong>sintomas de defici\u00eancia ocorrem inicialmente nas folhas velhas<\/strong>.<\/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: \"7dcaf60d-0e23-40ed-8b40-9b8cb07b4128\"\n});\n<\/script><\/p>\n<\/div>\n<h2>Absor\u00e7\u00e3o de nitrog\u00eanio x pH<\/h2>\n<p>O pH \u00e1cido inibe a absor\u00e7\u00e3o do NH<sub>4<\/sub><sup>+<\/sup> e favorece a do NO<sub>3<\/sub><sup>&#8211;<\/sup>, j\u00e1 em pH neutro\/alcalino o contr\u00e1rio \u00e9 observado, possivelmente, devido a efeitos competitivos do H<sup>+<\/sup> e OH<sup>&#8211;<\/sup> no processo de absor\u00e7\u00e3o do NH<sub>4<\/sub><sup>+<\/sup> e do NO<sub>3<\/sub><sup>&#8211;<\/sup>, respectivamente. (FAQUIN, 2005).<\/p>\n<h2>Fun\u00e7\u00f5es do nitrog\u00eanio no caf\u00e9<\/h2>\n<ul>\n<li>Constituinte de amino\u00e1cidos e prote\u00ednas.<\/li>\n<li>Constituinte de \u00e1cidos nucl\u00e9icos.<\/li>\n<li>Constituinte da clorofila.<\/li>\n<\/ul>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-22555 size-full\" src=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2020\/03\/nitrogenio-no-cafe-2.jpg\" alt=\"Estrutura molecular da clorofila\" width=\"386\" height=\"194\" srcset=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2020\/03\/nitrogenio-no-cafe-2.jpg 386w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2020\/03\/nitrogenio-no-cafe-2-300x151.jpg 300w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2020\/03\/nitrogenio-no-cafe-2-370x186.jpg 370w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2020\/03\/nitrogenio-no-cafe-2-270x136.jpg 270w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2020\/03\/nitrogenio-no-cafe-2-150x75.jpg 150w\" sizes=\"auto, (max-width: 386px) 100vw, 386px\" \/><span style=\"font-size: 10pt;\">Mol\u00e9cula de clorofila<\/span><\/p>\n<p><a href=\"https:\/\/conteudo.rehagro.com.br\/guia-identificacao-de-deficiencia-nutricional-no-cafeeiro?utm_campaign=material-cafe&amp;utm_source=guia-deficiencia-nutricional&amp;utm_medium=blog\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-39677 size-full\" title=\"Clique e baixe o material gratuitamente!\" src=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2025\/09\/banner-guia-deficiencias-nutricionais-cafeeiro.png\" alt=\"Guia Defici\u00eancias nutricionais no cafeeiro\" width=\"980\" height=\"317\" srcset=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2025\/09\/banner-guia-deficiencias-nutricionais-cafeeiro.png 980w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2025\/09\/banner-guia-deficiencias-nutricionais-cafeeiro-300x97.png 300w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2025\/09\/banner-guia-deficiencias-nutricionais-cafeeiro-768x248.png 768w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2025\/09\/banner-guia-deficiencias-nutricionais-cafeeiro-370x120.png 370w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2025\/09\/banner-guia-deficiencias-nutricionais-cafeeiro-270x87.png 270w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2025\/09\/banner-guia-deficiencias-nutricionais-cafeeiro-740x239.png 740w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2025\/09\/banner-guia-deficiencias-nutricionais-cafeeiro-150x49.png 150w\" sizes=\"auto, (max-width: 980px) 100vw, 980px\" \/><\/a><\/p>\n<h2>Sintomas de defici\u00eancia de nitrog\u00eanio no caf\u00e9<\/h2>\n<p><span style=\"font-weight: 400;\">O nitrog\u00eanio \u00e9 importante na expans\u00e3o da \u00e1rea foliar, no crescimento da vegeta\u00e7\u00e3o e na forma\u00e7\u00e3o dos bot\u00f5es florais, sendo essencial na atividade fotossint\u00e9tica.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">As defici\u00eancias de nitrog\u00eanio ocorrem principalmente na \u00e9poca de grana\u00e7\u00e3o dos frutos, em fun\u00e7\u00e3o de aduba\u00e7\u00f5es insuficientes, problemas no sistema radicular, falta de chuva que impede a sua absor\u00e7\u00e3o do solo ou excesso, pois adubos nitrogenados s\u00e3o facilmente lixiviados, principalmente os nitratos.<\/span><\/p>\n<p>Os sintomas de defici\u00eancia desse nutriente na cultura do caf\u00e9 \u00e9 uma clorose \u2014 <strong>um amarelamento<\/strong> \u2014 que aparece inicialmente nas folhas velhas.<\/p>\n<p>Em condi\u00e7\u00f5es de defici\u00eancia podem ser observadas folhas pequenas, devido ao nitrog\u00eanio atuar na <strong><a href=\"https:\/\/rehagro.com.br\/blog\/analise-de-folha\/\" target=\"_blank\" rel=\"noopener\">forma\u00e7\u00e3o de folhas<\/a><\/strong>. Al\u00e9m disso, pode ser observada desfolha, morte dos ramos, acarretando menor atividade fotossint\u00e9tica.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-22556 size-full\" src=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2020\/03\/nitrogenio-no-cafe-3.jpg\" alt=\"Folhas do cafeeiro com sintomas de defici\u00eancia de nitrog\u00eanio\" width=\"740\" height=\"555\" srcset=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2020\/03\/nitrogenio-no-cafe-3.jpg 740w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2020\/03\/nitrogenio-no-cafe-3-300x225.jpg 300w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2020\/03\/nitrogenio-no-cafe-3-370x278.jpg 370w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2020\/03\/nitrogenio-no-cafe-3-270x203.jpg 270w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2020\/03\/nitrogenio-no-cafe-3-80x60.jpg 80w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2020\/03\/nitrogenio-no-cafe-3-150x113.jpg 150w\" sizes=\"auto, (max-width: 740px) 100vw, 740px\" \/><span style=\"font-size: 10pt;\">Sintomas de defici\u00eancia de nitrog\u00eanio em caf\u00e9 (Foto: Diego Baqui\u00e3o)<\/span><\/p>\n<p>J\u00e1 em condi\u00e7\u00f5es de excesso de nitrog\u00eanio, pode acarretar favorecimento de doen\u00e7as como a <strong><a href=\"https:\/\/rehagro.com.br\/blog\/mancha-de-phoma-no-cafeeiro\/\" target=\"_blank\" rel=\"noopener\">Phoma<\/a><\/strong> e Bacterioses.<\/p>\n<p><a href=\"https:\/\/rehagro.com.br\/cursos\/capacitacao-em-gestao-na-producao-de-cafe?utm_campaign=mkt-materiais-gc&amp;utm_source=textos&amp;utm_medium=blog\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-28254 size-full\" title=\"Clique e saiba mais sobre o curso!\" src=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2020\/07\/botao-gc-arabica-1.jpg\" alt=\"Curso Gest\u00e3o na Produ\u00e7\u00e3o de Caf\u00e9 Ar\u00e1bica\" width=\"900\" height=\"250\" srcset=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2020\/07\/botao-gc-arabica-1.jpg 900w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2020\/07\/botao-gc-arabica-1-300x83.jpg 300w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2020\/07\/botao-gc-arabica-1-768x213.jpg 768w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2020\/07\/botao-gc-arabica-1-370x103.jpg 370w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2020\/07\/botao-gc-arabica-1-270x75.jpg 270w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2020\/07\/botao-gc-arabica-1-740x206.jpg 740w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2020\/07\/botao-gc-arabica-1-150x42.jpg 150w\" sizes=\"auto, (max-width: 900px) 100vw, 900px\" \/><\/a><\/p>\n<h2>C\u00e1lculo de recomenda\u00e7\u00e3o de nitrog\u00eanio na cultura do caf\u00e9<\/h2>\n<p>Exemplo de c\u00e1lculo, seguindo a f\u00f3rmula da Funda\u00e7\u00e3o PROCAF\u00c9:<\/p>\n<p style=\"text-align: center;\"><em><strong><span style=\"font-size: 12pt;\">N (Kgs\/ha) = (produ\u00e7\u00e3o (em sacas ha)x 2,6) + (pr\u00f3xima safra (em sacas ha) x 3,6)<\/span><\/strong><\/em><\/p>\n<p>Condi\u00e7\u00f5es da lavoura:<\/p>\n<ul>\n<li>Produ\u00e7\u00e3o do ano: 40 sacas<\/li>\n<li>Produ\u00e7\u00e3o esperada para a pr\u00f3xima safra: 28 sacas<\/li>\n<\/ul>\n<h3>Recomenda\u00e7\u00e3o de nitrog\u00eanio para produ\u00e7\u00e3o e vegeta\u00e7\u00e3o<\/h3>\n<p style=\"text-align: center;\"><em>N (Kgs\/ha) = (40 sacas x 2,6 kg de N) + (28 sacas x 3,6 kg de N)<\/em><\/p>\n<p style=\"text-align: center;\"><em>N (Kgs\/ha) = 104 + 100,8 = <strong>204,8 kg de N<\/strong><\/em><\/p>\n<p>Ap\u00f3s calculada a dose de nitrog\u00eanio necess\u00e1ria, <strong><a href=\"https:\/\/rehagro.com.br\/blog\/adubo-npk\/\" target=\"_blank\" rel=\"noopener\">deve-se escolher o fertilizante a ser utilizado<\/a><\/strong>.<\/p>\n<p>Dentre as fontes de fertilizantes nitrogenados, podemos citar:<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-41831 size-full\" src=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2020\/03\/tabela-fertilizantes-nitrogenador.png\" alt=\"Fontes de fertilizantes nitrogenados\" width=\"611\" height=\"289\" srcset=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2020\/03\/tabela-fertilizantes-nitrogenador.png 611w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2020\/03\/tabela-fertilizantes-nitrogenador-300x142.png 300w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2020\/03\/tabela-fertilizantes-nitrogenador-370x175.png 370w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2020\/03\/tabela-fertilizantes-nitrogenador-270x128.png 270w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2020\/03\/tabela-fertilizantes-nitrogenador-150x71.png 150w\" sizes=\"auto, (max-width: 611px) 100vw, 611px\" \/><span style=\"font-size: 10pt;\">Fonte: Raij et al. (1997)<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">Para o exemplo, vamos utilizar o nitrato de am\u00f4nio, que cont\u00e9m 33% de nitrog\u00eanio:<\/span><\/p>\n<p><span style=\"font-size: 12pt;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-22558 size-full\" src=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2020\/03\/nitrogenio-no-cafe-7.jpg\" alt=\"F\u00f3rmula nitrato de am\u00f4nio\" width=\"317\" height=\"86\" srcset=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2020\/03\/nitrogenio-no-cafe-7.jpg 317w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2020\/03\/nitrogenio-no-cafe-7-300x81.jpg 300w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2020\/03\/nitrogenio-no-cafe-7-270x73.jpg 270w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2020\/03\/nitrogenio-no-cafe-7-150x41.jpg 150w\" sizes=\"auto, (max-width: 317px) 100vw, 317px\" \/><\/span><\/p>\n<p><span style=\"font-size: 12pt;\">Para os fertilizantes nitrogenados, temos que considerar a efici\u00eancia dos mesmos. Para a ur\u00e9ia consideramos uma efici\u00eancia de 70%, j\u00e1 para o nitrato consideramos uma efici\u00eancia de 90%.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">Para o nosso exemplo, como utilizamos nitrato:<\/span><\/p>\n<p><span style=\"font-size: 12pt;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-22559 size-full\" src=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2020\/03\/nitrogenio-no-cafe-8.jpg\" alt=\"F\u00f3rmula efici\u00eancia nitrato de am\u00f4nio\" width=\"353\" height=\"88\" srcset=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2020\/03\/nitrogenio-no-cafe-8.jpg 353w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2020\/03\/nitrogenio-no-cafe-8-300x75.jpg 300w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2020\/03\/nitrogenio-no-cafe-8-270x67.jpg 270w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2020\/03\/nitrogenio-no-cafe-8-150x37.jpg 150w\" sizes=\"auto, (max-width: 353px) 100vw, 353px\" \/><\/span><\/p>\n<p><span style=\"font-size: 12pt;\">Em seguida, calcula-se a porcentagem a ser aplicada em cada parcelamento, que pode ser considerada: 30%, 40% e 30%. Por fim, faz-se a conta da quantidade de adubo por metro linear ou por planta (considerando o espa\u00e7amento).<\/span><\/p>\n<h2>Indicador de nitrog\u00eanio por saca de caf\u00e9<\/h2>\n<p>O indicador que utilizamos em nossos clientes de consultoria para verificar a efici\u00eancia, \u00e9 <strong>quantos quilos de nitrog\u00eanio tenho gasto por saca de caf\u00e9 produzida<\/strong>. Para chegar a este n\u00famero deve-se dividir o total de nitrog\u00eanio gasto por safra pelo total de sacas de caf\u00e9 produzida.<\/p>\n<p>\u00c9 importante avaliar este indicador por bi\u00eanios, pois avaliando em um ano somente poder\u00e1 ser mascarado pela bienalidade da produ\u00e7\u00e3o.<\/p>\n<p>O benchmarking para este indicador \u00e9 a faixa de <strong>6 a 8 kg de N\/sc<\/strong>.<\/p>\n<ul>\n<li>Se estiver abaixo de 6,0 kg de N\/sc, \u00d3TIMO, mas cuidado!<\/li>\n<li>8 a 9,0 kg de N\/sc, h\u00e1 margem para melhora.<\/li>\n<li>Acima de 9,0 kg de N\/sc, h\u00e1 muita margem para melhora.<\/li>\n<\/ul>\n<h2>Cuidados na aduba\u00e7\u00e3o quando se utiliza a ureia<\/h2>\n<p>A <strong><a href=\"https:\/\/rehagro.com.br\/blog\/adubacoes-via-ureia\/\" target=\"_blank\" rel=\"noopener\">ureia se destaca como um dos fertilizantes nitrogenados mais utilizados<\/a><\/strong>, no entanto, a aplica\u00e7\u00e3o de ureia no solo sem os devidos cuidados pode promover altas perdas por volatiliza\u00e7\u00e3o, na cultura do caf\u00e9 essa perda pode chegar at\u00e9 30% (DOMINGHETTI et al., 2016).<\/p>\n<p>Isso ocorre devido \u00e0 forma\u00e7\u00e3o do g\u00e1s am\u00f4nia (NH<sub>3<\/sub>), que \u00e9 vol\u00e1til, sendo uma das etapas intermedi\u00e1rias da hidr\u00f3lise da ureia no solo.<\/p>\n<ul>\n<li>Evitar a aplica\u00e7\u00e3o de ureia em solos \u00famidos, sempre preferindo sua aplica\u00e7\u00e3o em solos secos, com boa previs\u00e3o de chuvas nas pr\u00f3ximas horas.<\/li>\n<li>Cuidado com a aplica\u00e7\u00e3o de ureia em condi\u00e7\u00f5es de muita mat\u00e9ria org\u00e2nica, pois a enzima ur\u00e9ase (produzida por bact\u00e9rias, fungos de solo ou originada de restos vegetais) \u00e9 respons\u00e1vel pela hidr\u00f3lise da ureia, podendo haver perdas.<\/li>\n<li>Cuidado com a aplica\u00e7\u00e3o de ureia em solos com pH alcalino, que favorece a forma\u00e7\u00e3o de am\u00f4nia, que \u00e9 vol\u00e1til.<\/li>\n<\/ul>\n<h2>Teor de nitrog\u00eanio das folhas<\/h2>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-41830 size-full\" src=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2020\/03\/tabela-parametros-analise-folha.png\" alt=\"Faixas de varia\u00e7\u00e3o nos teores foliares em cafezais\" width=\"443\" height=\"285\" srcset=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2020\/03\/tabela-parametros-analise-folha.png 443w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2020\/03\/tabela-parametros-analise-folha-300x193.png 300w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2020\/03\/tabela-parametros-analise-folha-370x238.png 370w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2020\/03\/tabela-parametros-analise-folha-270x174.png 270w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2020\/03\/tabela-parametros-analise-folha-150x97.png 150w\" sizes=\"auto, (max-width: 443px) 100vw, 443px\" \/><span style=\"font-size: 10pt;\">Par\u00e2metros para an\u00e1lise de folha do cafeeiro, para o nutriente nitrog\u00eanio ao longo dos meses do ano<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"font-size: 10pt;\">** Faixas de varia\u00e7\u00e3o nos teores foliares em cafezais com produ\u00e7\u00e3o m\u00e9dia entre 30-40 sacas beneficiadas \/ ha Folhas rec\u00e9m \u2013 amadurecidas (Resultados na mat\u00e9ria seca).<\/span><br \/>\n<span style=\"font-size: 10pt;\">Fonte: E. Malavolta \/ G.C.Vitti<\/span><\/p>\n<p>Com base nesses par\u00e2metros de Malavolta e Vitti podem ser realizados ajustes nas aduba\u00e7\u00f5es com nitrog\u00eanio para o caf\u00e9.<\/p>\n<h2>Considera\u00e7\u00f5es sobre a recomenda\u00e7\u00e3o de nitrog\u00eanio<\/h2>\n<p>Por isso, devemos ter aten\u00e7\u00e3o para se realizar uma recomenda\u00e7\u00e3o adequada de nitrog\u00eanio para a cultura do caf\u00e9, evitando assim problemas com defici\u00eancias deste nutriente que pode afetar o metabolismo e consequentemente a produtividade da cultura.<\/p>\n<p>\u00c9 importante, tamb\u00e9m, estarmos atentos aos \u00edndices de nitrog\u00eanio na an\u00e1lise de folha e aos indicadores de N por saca de caf\u00e9 produzida na m\u00e9dia de duas safras. Dessa forma, podemos verificar se estamos aplicando mais ou menos nitrog\u00eanio que o necess\u00e1rio para a cultura, sempre buscando uma alta produtividade e lucratividade ao produtor.<\/p>\n<h2>Otimize o uso do nitrog\u00eanio e aumente a efici\u00eancia da lavoura<\/h2>\n<p>O nitrog\u00eanio \u00e9 um dos nutrientes mais importantes para o cafeeiro, essencial para o crescimento, a produtividade e a qualidade da produ\u00e7\u00e3o. No entanto, seu manejo inadequado pode gerar perdas, aumentar os custos e comprometer os resultados da lavoura. Para aproveitar ao m\u00e1ximo esse nutriente, \u00e9 fundamental associar conhecimento t\u00e9cnico a uma gest\u00e3o estrat\u00e9gica.<\/p>\n<p>No <a href=\"https:\/\/rehagro.com.br\/cursos\/capacitacao-em-gestao-na-producao-de-cafe?utm_campaign=mkt-materiais-gc&amp;utm_source=textos&amp;utm_medium=blog\"><strong>Curso Gest\u00e3o na Produ\u00e7\u00e3o de Caf\u00e9 Ar\u00e1bica<\/strong><\/a>\u00a0do Rehagro, voc\u00ea aprende a interpretar as necessidades nutricionais do cafeeiro, calcular recomenda\u00e7\u00f5es de aduba\u00e7\u00e3o de forma pr\u00e1tica, reduzir custos e conduzir sua produ\u00e7\u00e3o com foco em efici\u00eancia, qualidade e rentabilidade.<\/p>\n<p><a href=\"https:\/\/rehagro.com.br\/cursos\/capacitacao-em-gestao-na-producao-de-cafe?utm_campaign=mkt-materiais-gc&amp;utm_source=textos&amp;utm_medium=blog\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-24250 size-full\" title=\"Clique e saiba mais sobre o curso!\" src=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2023\/09\/banner-gc.jpg\" alt=\"Curso Gest\u00e3o na Produ\u00e7\u00e3o de Caf\u00e9 Ar\u00e1bica\" width=\"980\" height=\"317\" srcset=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2023\/09\/banner-gc.jpg 980w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2023\/09\/banner-gc-300x97.jpg 300w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2023\/09\/banner-gc-768x248.jpg 768w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2023\/09\/banner-gc-370x120.jpg 370w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2023\/09\/banner-gc-270x87.jpg 270w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2023\/09\/banner-gc-740x239.jpg 740w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2023\/09\/banner-gc-150x49.jpg 150w\" sizes=\"auto, (max-width: 980px) 100vw, 980px\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-18459 size-full\" src=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2022\/12\/larissa-cocato.jpg\" alt=\"Larissa Cocato - Coordenadora de Ensino Caf\u00e9\" width=\"300\" height=\"96\" srcset=\"https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2022\/12\/larissa-cocato.jpg 300w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2022\/12\/larissa-cocato-270x86.jpg 270w, https:\/\/rehagro.com.br\/blog\/wp-content\/uploads\/2022\/12\/larissa-cocato-150x48.jpg 150w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>O nitrog\u00eanio (N) \u00e9 o nutriente mais exigido pelas plantas, e com o caf\u00e9 n\u00e3o seria diferente. A absor\u00e7\u00e3o do nitrog\u00eanio pelas plantas \u00e9 feita via: NO3&#8211; (n\u00edtrica &#8211; predominante em condi\u00e7\u00f5es naturais), NH4+ (amoniacal), ureia. O transporte desse elemento \u00e9 feito via xilema, na corrente transpirat\u00f3ria. O nitrog\u00eanio \u00e9 um nutriente altamente m\u00f3vel, dessa [&hellip;]<\/p>\n","protected":false},"author":17,"featured_media":22561,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[211],"tags":[282,266,288,463,518,665],"class_list":["post-7243","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cafe","tag-cafe","tag-cafeeiro","tag-folha","tag-lavoura","tag-nitrogenio","tag-nitrogenio-na-producao-de-graos"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Nitrog\u00eanio no caf\u00e9: fun\u00e7\u00f5es, defici\u00eancia e c\u00e1lculo de aduba\u00e7\u00e3o<\/title>\n<meta name=\"description\" content=\"O nitrog\u00eanio \u00e9 o nutriente mais exigido pelas plantas, e tamb\u00e9m pelo caf\u00e9. 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