{"id":9261,"date":"2023-12-07T20:25:49","date_gmt":"2023-12-07T19:25:49","guid":{"rendered":"https:\/\/geopard.tech\/?p=9261"},"modified":"2023-12-07T20:25:49","modified_gmt":"2023-12-07T19:25:49","slug":"iniciativa-de-nitrogenio-de-iowa-aprimora-a-precisao-nas-taxas-de-aplicacao-de-fertilizantes","status":"publish","type":"post","link":"https:\/\/geopard.tech\/pt-br\/blog\/iowa-nitrogen-initiative-enhancing-precision-in-fertilizer-application-rates\/","title":{"rendered":"Iniciativa de Nitrog\u00eanio de Iowa: Aprimorando a Precis\u00e3o nas Taxas de Aplica\u00e7\u00e3o de Fertilizantes"},"content":{"rendered":"<p>Em Iowa, Michael Castellano fala sobre como o cultivo do milho envolve muitas escolhas. Ele diz que existem bilh\u00f5es de maneiras, e algumas pessoas acham que ele est\u00e1 inventando. Mas ele explica que, quando se somam todos os diferentes tipos de milho, m\u00e9todos de cultivo e condi\u00e7\u00f5es clim\u00e1ticas, o n\u00famero \u00e9 realmente enorme.<\/p>\n<p>Essa incerteza \u00e9 um problema s\u00e9rio, pois usar pouco ou muito fertilizante nitrogenado pode causar problemas. A falta dele pode reduzir a quantidade de milho colhida, enquanto o excesso pode custar muito caro e prejudicar o meio ambiente.<\/p>\n<p>A Iniciativa de Nitrog\u00eanio de Iowa, liderada por Castellano e Sotirios Archontoulis, est\u00e1 tentando determinar a quantidade ideal de nitrog\u00eanio para cada campo de milho, coletando dados de fazendas em todo o estado de Iowa.<\/p>\n<p>O objetivo \u00e9 facilitar o controle da quantidade de fertilizantes a ser utilizada pelos agricultores. O projeto \u00e9 financiado pelo Departamento de Agricultura e Administra\u00e7\u00e3o de Terras de Iowa, e o Secret\u00e1rio de Agricultura de Iowa, Mike Naig, considera-o uma excelente colabora\u00e7\u00e3o entre agricultores e especialistas.<\/p>\n<p>Ele acredita que isso dar\u00e1 aos agricultores as informa\u00e7\u00f5es necess\u00e1rias para cultivar melhor, ganhar mais dinheiro e cuidar do meio ambiente.<\/p>\n<h2>Unindo as diferen\u00e7as<\/h2>\n<p>A Iniciativa de Nitrog\u00eanio de Iowa est\u00e1 conduzindo 270 ensaios em fazendas este ano, abrangendo 72 propriedades agr\u00edcolas privadas diferentes, o que representa um aumento de quatro vezes em rela\u00e7\u00e3o ao primeiro ano do projeto, em 2022. O objetivo final \u00e9 atingir 500 ensaios por ano.<\/p>\n<p>Para que os agricultores participem, eles precisam ter acesso a duas tecnologias de agricultura de precis\u00e3o cada vez mais comuns: aplica\u00e7\u00e3o de fertilizantes em taxa vari\u00e1vel e monitoramento de produtividade baseado em GPS. Usando dados hist\u00f3ricos de produtividade para identificar \u00e1reas com comportamento esperado diferente, a Premier Crop Systems, parceira do projeto, elabora um ensaio em uma pequena \u00e1rea da lavoura, geralmente de cerca de dois hectares.<\/p>\n<p>Diferentes taxas de nitrog\u00eanio, variando de zero a 200 libras por acre, s\u00e3o atribu\u00eddas a se\u00e7\u00f5es dentro da \u00e1rea experimental, e os agricultores compartilham os dados de produtividade com a equipe de pesquisa ap\u00f3s a colheita. Os participantes s\u00e3o compensados pela perda de produtividade nas terras que n\u00e3o recebem nitrog\u00eanio.<\/p>\n<p>Os dados dos ensaios s\u00e3o aprimorados com simula\u00e7\u00f5es de modelos de processos biof\u00edsicos para determinar as taxas ideais com base nos tipos de solo e sementes, pr\u00e1ticas de manejo e condi\u00e7\u00f5es clim\u00e1ticas. Esse banco de dados alimentar\u00e1 as ferramentas de apoio \u00e0 decis\u00e3o do projeto para o p\u00fablico, com previs\u00e3o de disponibilidade para a safra de 2025.<\/p>\n<p>Essas ferramentas ser\u00e3o particularmente \u00fateis para agricultores que utilizam tecnologia de agricultura de precis\u00e3o para coletar dados. Segundo Castellano, agricultores com equipamentos para aplica\u00e7\u00e3o de fertilizantes em taxas vari\u00e1veis frequentemente n\u00e3o disp\u00f5em de orienta\u00e7\u00f5es baseadas em evid\u00eancias sobre como essas taxas devem variar.<\/p>\n<p>\u201cEstamos trabalhando para preencher a lacuna entre os avan\u00e7os tecnol\u00f3gicos na agricultura de precis\u00e3o, desenvolvidos por engenheiros, e o conhecimento cient\u00edfico dos agr\u00f4nomos\u201d, disse ele.<\/p>\n<h2>Tr\u00eas ferramentas \u00fateis<\/h2>\n<p>A equipe de pesquisa est\u00e1 trabalhando em tr\u00eas ferramentas para ajudar os agricultores a tomar melhores decis\u00f5es:<\/p>\n<p><strong>Recomenda\u00e7\u00f5es de benchmark aprimoradas:<\/strong><\/p>\n<ul>\n<li>Eles est\u00e3o fazendo sugest\u00f5es melhores para as taxas de nitrog\u00eanio, levando em considera\u00e7\u00e3o diferen\u00e7as em fatores como gen\u00e9tica, solo, manejo da terra e clima.<\/li>\n<li>Os agricultores tamb\u00e9m podem consultar dados de ensaios para ver o que realmente acontece com diferentes taxas e pr\u00e1ticas.<\/li>\n<\/ul>\n<p><strong>Ferramenta de previs\u00e3o:<\/strong><\/p>\n<ul>\n<li>Esta ferramenta ir\u00e1 prever as melhores taxas com base em estimativas atuais e futuras sobre o solo e o clima.<\/li>\n<li>Isso \u00e9 importante porque o clima tem um grande impacto na quantidade de nitrog\u00eanio necess\u00e1ria, de acordo com Castellano.<\/li>\n<\/ul>\n<p><strong>Ferramenta de previs\u00e3o retrospectiva:<\/strong><\/p>\n<ul>\n<li>Essa ferramenta ajuda os agricultores a analisar o ano anterior para verificar como as necessidades de nitrog\u00eanio de suas planta\u00e7\u00f5es poderiam ter mudado se eles tivessem adotado pr\u00e1ticas diferentes. Por exemplo, se tivessem plantado um tipo diferente de milho ou usado fertilizante em uma \u00e9poca diferente.<\/li>\n<\/ul>\n<p>Castellano explica que o objetivo \u00e9 continuar atualizando essas ferramentas com novos dados de ensaios cl\u00ednicos a cada ano.<\/p>\n<p>\u201cEnquanto os agricultores estiverem experimentando novas pr\u00e1ticas e o clima estiver mudando, as taxas ideais de nitrog\u00eanio tamb\u00e9m mudar\u00e3o. Precisamos continuar estudando e fornecendo aos agricultores as informa\u00e7\u00f5es necess\u00e1rias para que tomem as melhores decis\u00f5es\u201d, disse ele.<\/p>\n<h2>Envolvendo os agricultores<\/h2>\n<p>Os agricultores fazem parte da Iniciativa de Nitrog\u00eanio de Iowa desde o in\u00edcio, tendo inclusive participado de um sprint de design facilitado por engenheiros e designers do Google em fevereiro. O feedback dos agricultores desempenhou um papel crucial, moldando decis\u00f5es como o lan\u00e7amento inicial das ferramentas de apoio \u00e0 decis\u00e3o em formato de aplicativo m\u00f3vel. Os agricultores sugeriram essa op\u00e7\u00e3o porque acreditam que usar\u00e3o mais as informa\u00e7\u00f5es se puderem acess\u00e1-las em qualquer lugar.<\/p>\n<p>\u201cTemos trabalhado em estreita colabora\u00e7\u00e3o com os agricultores para garantir que os produtos que estamos criando sejam \u00fateis para as pessoas que os utilizar\u00e3o. N\u00e3o queremos que os agricultores sintam que isso lhes \u00e9 imposto\u201d, disse Castellano.<\/p>\n<p>Ele est\u00e1 satisfeito por todos os agricultores que participaram no primeiro ano terem continuado no segundo. Roger Zylstra, um dos volunt\u00e1rios que coordenou os ensaios durante dois anos, partilhou num dia de campo em setembro que a colabora\u00e7\u00e3o com a equipa de investiga\u00e7\u00e3o foi simples e tranquila. Zylstra, antigo presidente da Associa\u00e7\u00e3o de Produtores de Milho do Iowa, cultiva perto de Lynnville, no Condado de Jasper, e est\u00e1 ansioso por anos mais chuvosos para proporcionar uma maior variedade de dados.<\/p>\n<p>\u201cSempre tento encontrar maneiras de ser um administrador melhor da terra, e aprendemos que existem maneiras melhores de fazer as coisas\u201d, disse Zylstra. \u201cAcho que o potencial aqui \u00e9 incr\u00edvel.\u201d<\/p>\n<p>Os l\u00edderes do projeto est\u00e3o convidando agricultores, consultores agr\u00edcolas e aplicadores de fertilizantes a se inscreverem para um teste na safra de 2024. Os interessados podem preencher um formul\u00e1rio online para obter mais informa\u00e7\u00f5es ou manifestar seu interesse.<\/p>","protected":false},"excerpt":{"rendered":"<p>Em Iowa, Michael Castellano fala sobre como o cultivo de milho envolve muitas escolhas. Ele diz que existem bilh\u00f5es de maneiras, e algumas pessoas acham que ele est\u00e1...<\/p>","protected":false},"author":210157960,"featured_media":9267,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","_eb_attr":"","content-type":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_wpcom_ai_launchpad_first_post":false,"_jetpack_hide_featured_image":false,"_jetpack_featured_image_duplicate_dismissed":0,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"{title}\n\n{excerpt}\n\n{url}","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"_wpas_customize_per_network":false,"jetpack_post_was_ever_published":false},"categories":[1365],"tags":[],"class_list":["post-9261","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - 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