Effects of weed control and nitrogen levels on protein content of corn grains
Autor(a) principal: | |
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Data de Publicação: | 1993 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Pesquisa Agropecuária Brasileira (Online) |
Texto Completo: | https://seer.sct.embrapa.br/index.php/pab/article/view/3916 |
Resumo: | A study was carried out in 1990/91 in Mossoró, RN, Brazil, to evaluate the effects of weed control (no hoeing and hoeing at 20, 40, and 20 and 40 days after sowing) and N levels (0, 60 and 120 kg/ha) on protein content of corn grains of the Centralmex cultivar. The experimental design followed a factorial arrangement in randomized blocks with five replications, and the plants were grown under sprinkler irrigation conditions. Significant effect for weed control and N levels was observed, but not for weed control x N levels interaction. The protein content of corn obtained with no hoeing (8,3%) was lower than those obtained with one hoeing at 40 days (9,7%) or with two hoeings (9,6%), but did not differ from that produced with one hoeing at 20 days (9,1%). The application of 120 kg of N/ha resulted in higher protein content (9,6%) than that found in the absence of N (8,3%). There was no significant difference between zero and 60 kg de N (9,3%) levels. |
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Effects of weed control and nitrogen levels on protein content of corn grainsEfeitos do controle de invasoras e de níveis de nitrogênio sobre o teor de proteína dos grãos de milhoZea mays; hoeing; fertilizer; irrigationZea mays; plantas daninhas; capinas; adubação; irrigaçãoA study was carried out in 1990/91 in Mossoró, RN, Brazil, to evaluate the effects of weed control (no hoeing and hoeing at 20, 40, and 20 and 40 days after sowing) and N levels (0, 60 and 120 kg/ha) on protein content of corn grains of the Centralmex cultivar. The experimental design followed a factorial arrangement in randomized blocks with five replications, and the plants were grown under sprinkler irrigation conditions. Significant effect for weed control and N levels was observed, but not for weed control x N levels interaction. The protein content of corn obtained with no hoeing (8,3%) was lower than those obtained with one hoeing at 40 days (9,7%) or with two hoeings (9,6%), but did not differ from that produced with one hoeing at 20 days (9,1%). The application of 120 kg of N/ha resulted in higher protein content (9,6%) than that found in the absence of N (8,3%). There was no significant difference between zero and 60 kg de N (9,3%) levels.O objetivo deste trabalho foi avaliar os efeitos de níveis de controle de invasoras (sem capinas, capina aos 20 dias do plantio, capina aos 40 dias do plantio, e capinas aos 20 e 40 dias do plantio) e de níveis de N (0, 60 e 120 kg de N/ha) sobre o teor de proteína dos grãos de milho da variedade Centralmex, irrigada por aspersão. O estudo foi realizado em Mossoró, RN, em 1990/91, em esquema fatorial disposto em blocos casualizados, com cinco repetições. Verificou-se efeito significativo para níveis de controle das invasoras e para níveis de N, mas não para a interação entre estes dois fatores. O teor de proteína obtido em milho sem capinas (8,3%) foi inferior aos obtidos com uma capina aos 40 dias (9,7%) ou com duas capinas (9,6%), mas não diferiu do obtido com capina aos 20 dias (9,1%). A adubação com 120 kg de N/ha determinou maior teor de proteína (9,6%) que o encontrado na ausência de adubação (8,6%). Não houve diferença significativa entre os níveis 0 e 60 kg de N (9,3% de proteína) quanto ao referido caráter.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária Brasileirae Silva, Paulo Sérgio Limado Rego, Maílde CarlosBezerra, Nizomar Falçãode Freitas, Carlos José1993-05-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/3916Pesquisa Agropecuaria Brasileira; v.28, n.5, maio 1993; 609-612Pesquisa Agropecuária Brasileira; v.28, n.5, maio 1993; 609-6121678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/3916/1207info:eu-repo/semantics/openAccess2010-03-31T12:49:49Zoai:ojs.seer.sct.embrapa.br:article/3916Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2010-03-31T12:49:49Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Effects of weed control and nitrogen levels on protein content of corn grains Efeitos do controle de invasoras e de níveis de nitrogênio sobre o teor de proteína dos grãos de milho |
title |
Effects of weed control and nitrogen levels on protein content of corn grains |
spellingShingle |
Effects of weed control and nitrogen levels on protein content of corn grains e Silva, Paulo Sérgio Lima Zea mays; hoeing; fertilizer; irrigation Zea mays; plantas daninhas; capinas; adubação; irrigação |
title_short |
Effects of weed control and nitrogen levels on protein content of corn grains |
title_full |
Effects of weed control and nitrogen levels on protein content of corn grains |
title_fullStr |
Effects of weed control and nitrogen levels on protein content of corn grains |
title_full_unstemmed |
Effects of weed control and nitrogen levels on protein content of corn grains |
title_sort |
Effects of weed control and nitrogen levels on protein content of corn grains |
author |
e Silva, Paulo Sérgio Lima |
author_facet |
e Silva, Paulo Sérgio Lima do Rego, Maílde Carlos Bezerra, Nizomar Falção de Freitas, Carlos José |
author_role |
author |
author2 |
do Rego, Maílde Carlos Bezerra, Nizomar Falção de Freitas, Carlos José |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
e Silva, Paulo Sérgio Lima do Rego, Maílde Carlos Bezerra, Nizomar Falção de Freitas, Carlos José |
dc.subject.por.fl_str_mv |
Zea mays; hoeing; fertilizer; irrigation Zea mays; plantas daninhas; capinas; adubação; irrigação |
topic |
Zea mays; hoeing; fertilizer; irrigation Zea mays; plantas daninhas; capinas; adubação; irrigação |
description |
A study was carried out in 1990/91 in Mossoró, RN, Brazil, to evaluate the effects of weed control (no hoeing and hoeing at 20, 40, and 20 and 40 days after sowing) and N levels (0, 60 and 120 kg/ha) on protein content of corn grains of the Centralmex cultivar. The experimental design followed a factorial arrangement in randomized blocks with five replications, and the plants were grown under sprinkler irrigation conditions. Significant effect for weed control and N levels was observed, but not for weed control x N levels interaction. The protein content of corn obtained with no hoeing (8,3%) was lower than those obtained with one hoeing at 40 days (9,7%) or with two hoeings (9,6%), but did not differ from that produced with one hoeing at 20 days (9,1%). The application of 120 kg of N/ha resulted in higher protein content (9,6%) than that found in the absence of N (8,3%). There was no significant difference between zero and 60 kg de N (9,3%) levels. |
publishDate |
1993 |
dc.date.none.fl_str_mv |
1993-05-01 |
dc.type.none.fl_str_mv |
|
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/3916 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/3916 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/3916/1207 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
dc.source.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira; v.28, n.5, maio 1993; 609-612 Pesquisa Agropecuária Brasileira; v.28, n.5, maio 1993; 609-612 1678-3921 0100-104x reponame:Pesquisa Agropecuária Brasileira (Online) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Pesquisa Agropecuária Brasileira (Online) |
collection |
Pesquisa Agropecuária Brasileira (Online) |
repository.name.fl_str_mv |
Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
pab@sct.embrapa.br || sct.pab@embrapa.br |
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1793416662010036224 |