{"id":38,"date":"2020-08-20T20:41:31","date_gmt":"2020-08-20T20:41:31","guid":{"rendered":"http:\/\/www.cottonapps.com.br\/blog\/?p=38"},"modified":"2023-03-23T01:51:22","modified_gmt":"2023-03-23T01:51:22","slug":"peso-do-capulho","status":"publish","type":"post","link":"https:\/\/www.cottonapps.com.br\/blog\/peso-do-capulho\/","title":{"rendered":"Peso do capulho"},"content":{"rendered":"\n<p>O peso m\u00e9dio do capulho (PMC) \u00e9 o segundo componente de produ\u00e7\u00e3o mais importante, ap\u00f3s o n\u00famero de capulhos (NC). Em produtividades de at\u00e9 1600 kg\/ha de fibra a correla\u00e7\u00e3o do PMC com a produtividade \u00e9 inferior \u00e1 44%, mas em n\u00edveis produtivos superiores \u00e1 1600 kg\/ha a participa\u00e7\u00e3o \u00e9 mais significativa (80%), pois o aumento do NC \u00e9 limitado.<\/p>\n\n\n\n<p>O PMC \u00e9 resultado do n\u00famero de fibras por \u00e1rea da superf\u00edcie da semente e do peso m\u00e9dio de cada fibra. O n\u00famero de fibras \u00e9 primariamente definido pela gen\u00e9tica da cultivar, por\u00e9m pode ser influenciado pelo ambiente. O peso da fibra tamb\u00e9m tem predisposi\u00e7\u00e3o gen\u00e9tica mas \u00e9 muito mais sens\u00edvel \u00e1 varia\u00e7\u00e3o do ambiente.<\/p>\n\n\n\n<p>\u00c1gua \u2013 A \u00e1gua possui como papel b\u00e1sico a expans\u00e3o da c\u00e9lula (fibra), logo, se ocorrer defici\u00eancia h\u00eddrica nos primeiros 20 dias ap\u00f3s a abertura da flor (antese), a tend\u00eancia \u00e9 que se tenha fibras mais curtas, limitando assim a \u00e1rea de dep\u00f3sito de celulose.<\/p>\n\n\n\n<p>Luz \u2013 A falta de luminosidade reduz a fotossintese e portanto a produ\u00e7\u00e3o de carboidratos (celulose comp\u00f5e mais de 90% da fibra), assim a ocorr\u00eancia de per\u00edodos nublados ou autossombreamento excessivo podem limitar o ac\u00famulo de carboidratos na parede secund\u00e1ria da fibra sobretudo no per\u00edodo entre 20 e 45 dias ap\u00f3s a antese, resultando em fibras mais leves, de baixo micronaire e resist\u00eancia.<\/p>\n\n\n\n<p>Temperatura \u2013 A temperatura elevada reduz o peso da fibra devido ao aumento da respira\u00e7\u00e3o consumir os carboidratos produzidos. Por outro lado, a baixa temperatura reduz a atividade da rubisco (enzima respons\u00e1vel pela fixa\u00e7\u00e3o do CO2), e portanto a produ\u00e7\u00e3o de carboidratos.<\/p>\n\n\n\n<p>Manejo \u2013 Aduba\u00e7\u00f5es nitrogenadas em doses excessivas ou em \u00e9pocas inadequadas tendem a estimular o crescimento vegetativo, e se n\u00e3o houver um bom manejo de regulador de crescimento, poder\u00e1 haver competi\u00e7\u00e3o por carboidratos com o enchimento dos frutos. O equil\u00edbrio entre N e K nas aduba\u00e7\u00f5es tamb\u00e9m \u00e9 importante para garantir boa taxa de transfer\u00eancia de carboidratos das fontes (folhas) aos drenos (ma\u00e7\u00e3s). \u00a0\u00a0<\/p>\n\n\n\n<figure class=\"wp-block-gallery columns-4 is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\"><ul class=\"blocks-gallery-grid\"><li class=\"blocks-gallery-item\"><figure><img data-recalc-dims=\"1\" fetchpriority=\"high\" decoding=\"async\" width=\"960\" height=\"640\" src=\"https:\/\/i0.wp.com\/www.cottonapps.com.br\/blog\/wp-content\/uploads\/2020\/08\/1.jpg?resize=960%2C640&#038;ssl=1\" alt=\"\" data-id=\"40\" data-full-url=\"https:\/\/www.cottonapps.com.br\/blog\/wp-content\/uploads\/2020\/08\/1-scaled.jpg\" data-link=\"https:\/\/www.cottonapps.com.br\/blog\/?attachment_id=40\" class=\"wp-image-40\" srcset=\"https:\/\/i0.wp.com\/www.cottonapps.com.br\/blog\/wp-content\/uploads\/2020\/08\/1-scaled.jpg?resize=1024%2C683&amp;ssl=1 1024w, https:\/\/i0.wp.com\/www.cottonapps.com.br\/blog\/wp-content\/uploads\/2020\/08\/1-scaled.jpg?resize=300%2C200&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.cottonapps.com.br\/blog\/wp-content\/uploads\/2020\/08\/1-scaled.jpg?resize=768%2C512&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.cottonapps.com.br\/blog\/wp-content\/uploads\/2020\/08\/1-scaled.jpg?resize=1536%2C1024&amp;ssl=1 1536w, https:\/\/i0.wp.com\/www.cottonapps.com.br\/blog\/wp-content\/uploads\/2020\/08\/1-scaled.jpg?resize=2048%2C1365&amp;ssl=1 2048w, https:\/\/i0.wp.com\/www.cottonapps.com.br\/blog\/wp-content\/uploads\/2020\/08\/1-scaled.jpg?w=1920&amp;ssl=1 1920w\" sizes=\"(max-width: 960px) 100vw, 960px\" \/><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img data-recalc-dims=\"1\" decoding=\"async\" width=\"771\" height=\"1024\" src=\"https:\/\/i0.wp.com\/www.cottonapps.com.br\/blog\/wp-content\/uploads\/2020\/08\/2-iniciacao-da-fibra.png?resize=771%2C1024&#038;ssl=1\" alt=\"\" data-id=\"42\" data-full-url=\"https:\/\/www.cottonapps.com.br\/blog\/wp-content\/uploads\/2020\/08\/2-iniciacao-da-fibra.png\" data-link=\"https:\/\/www.cottonapps.com.br\/blog\/?attachment_id=42\" class=\"wp-image-42\" srcset=\"https:\/\/i0.wp.com\/www.cottonapps.com.br\/blog\/wp-content\/uploads\/2020\/08\/2-iniciacao-da-fibra.png?resize=771%2C1024&amp;ssl=1 771w, https:\/\/i0.wp.com\/www.cottonapps.com.br\/blog\/wp-content\/uploads\/2020\/08\/2-iniciacao-da-fibra.png?resize=226%2C300&amp;ssl=1 226w, https:\/\/i0.wp.com\/www.cottonapps.com.br\/blog\/wp-content\/uploads\/2020\/08\/2-iniciacao-da-fibra.png?resize=768%2C1020&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.cottonapps.com.br\/blog\/wp-content\/uploads\/2020\/08\/2-iniciacao-da-fibra.png?resize=1157%2C1536&amp;ssl=1 1157w, https:\/\/i0.wp.com\/www.cottonapps.com.br\/blog\/wp-content\/uploads\/2020\/08\/2-iniciacao-da-fibra.png?w=1386&amp;ssl=1 1386w\" sizes=\"(max-width: 771px) 100vw, 771px\" \/><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img data-recalc-dims=\"1\" decoding=\"async\" width=\"745\" height=\"1024\" src=\"https:\/\/i0.wp.com\/www.cottonapps.com.br\/blog\/wp-content\/uploads\/2020\/08\/3-elongac\u0327ao.png?resize=745%2C1024&#038;ssl=1\" alt=\"\" data-id=\"43\" data-full-url=\"https:\/\/www.cottonapps.com.br\/blog\/wp-content\/uploads\/2020\/08\/3-elongac\u0327ao.png\" data-link=\"https:\/\/www.cottonapps.com.br\/blog\/?attachment_id=43\" class=\"wp-image-43\" srcset=\"https:\/\/i0.wp.com\/www.cottonapps.com.br\/blog\/wp-content\/uploads\/2020\/08\/3-elongac\u0327ao.png?resize=745%2C1024&amp;ssl=1 745w, https:\/\/i0.wp.com\/www.cottonapps.com.br\/blog\/wp-content\/uploads\/2020\/08\/3-elongac\u0327ao.png?resize=218%2C300&amp;ssl=1 218w, https:\/\/i0.wp.com\/www.cottonapps.com.br\/blog\/wp-content\/uploads\/2020\/08\/3-elongac\u0327ao.png?resize=768%2C1056&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.cottonapps.com.br\/blog\/wp-content\/uploads\/2020\/08\/3-elongac\u0327ao.png?resize=1118%2C1536&amp;ssl=1 1118w, https:\/\/i0.wp.com\/www.cottonapps.com.br\/blog\/wp-content\/uploads\/2020\/08\/3-elongac\u0327ao.png?w=1215&amp;ssl=1 1215w\" sizes=\"(max-width: 745px) 100vw, 745px\" \/><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"960\" height=\"944\" src=\"https:\/\/i0.wp.com\/www.cottonapps.com.br\/blog\/wp-content\/uploads\/2020\/08\/4-deposicao-de-celulose.png?resize=960%2C944&#038;ssl=1\" alt=\"\" data-id=\"44\" data-full-url=\"https:\/\/www.cottonapps.com.br\/blog\/wp-content\/uploads\/2020\/08\/4-deposicao-de-celulose.png\" data-link=\"https:\/\/www.cottonapps.com.br\/blog\/?attachment_id=44\" class=\"wp-image-44\" srcset=\"https:\/\/i0.wp.com\/www.cottonapps.com.br\/blog\/wp-content\/uploads\/2020\/08\/4-deposicao-de-celulose.png?resize=1024%2C1007&amp;ssl=1 1024w, https:\/\/i0.wp.com\/www.cottonapps.com.br\/blog\/wp-content\/uploads\/2020\/08\/4-deposicao-de-celulose.png?resize=300%2C295&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.cottonapps.com.br\/blog\/wp-content\/uploads\/2020\/08\/4-deposicao-de-celulose.png?resize=768%2C756&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.cottonapps.com.br\/blog\/wp-content\/uploads\/2020\/08\/4-deposicao-de-celulose.png?resize=1536%2C1511&amp;ssl=1 1536w, https:\/\/i0.wp.com\/www.cottonapps.com.br\/blog\/wp-content\/uploads\/2020\/08\/4-deposicao-de-celulose.png?resize=50%2C50&amp;ssl=1 50w, https:\/\/i0.wp.com\/www.cottonapps.com.br\/blog\/wp-content\/uploads\/2020\/08\/4-deposicao-de-celulose.png?w=1662&amp;ssl=1 1662w\" sizes=\"(max-width: 960px) 100vw, 960px\" \/><\/figure><\/li><\/ul><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>O peso m\u00e9dio do capulho (PMC) \u00e9 o segundo componente de produ\u00e7\u00e3o mais importante, ap\u00f3s o n\u00famero de capulhos (NC). Em produtividades de at\u00e9 1600 kg\/ha de fibra a correla\u00e7\u00e3o do PMC com a produtividade \u00e9 inferior \u00e1 44%, mas em n\u00edveis produtivos superiores \u00e1 1600 kg\/ha a participa\u00e7\u00e3o \u00e9 mais significativa (80%), pois o [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":44,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_eb_attr":"","_joinchat":[],"footnotes":""},"categories":[2],"tags":[],"class_list":["post-38","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-artigos","cat-2-id","has_thumb"],"_links":{"self":[{"href":"https:\/\/www.cottonapps.com.br\/blog\/wp-json\/wp\/v2\/posts\/38","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.cottonapps.com.br\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.cottonapps.com.br\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.cottonapps.com.br\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.cottonapps.com.br\/blog\/wp-json\/wp\/v2\/comments?post=38"}],"version-history":[{"count":0,"href":"https:\/\/www.cottonapps.com.br\/blog\/wp-json\/wp\/v2\/posts\/38\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.cottonapps.com.br\/blog\/wp-json\/wp\/v2\/media\/44"}],"wp:attachment":[{"href":"https:\/\/www.cottonapps.com.br\/blog\/wp-json\/wp\/v2\/media?parent=38"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.cottonapps.com.br\/blog\/wp-json\/wp\/v2\/categories?post=38"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.cottonapps.com.br\/blog\/wp-json\/wp\/v2\/tags?post=38"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}