Effects of control periods and the presence of weeds in lettuce culture
Main Author: | |
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Publication Date: | 2008 |
Other Authors: | , , |
Format: | Article |
Language: | por |
Source: | Acta Scientiarum. Agronomy (Online) |
Download full: | http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/4295 |
Summary: | The effects of different control periods and the presence of weeds in lettuce, cv. Elisa, were evaluated. The treatments consisted of maintaining the culture in the presence or absence of weeds for periods of 7, 14, 21, 28, 35, 42 e 49 days after transplantation. A control period of 14 days was enough for the crop to show its productive potential. For crescent periods in the presence of weeds, the crop can live with the infesting community for a period of 28 days without yield reduction. Thus, the duration of the total period of interference prevention (TPIP) was 14 days, and the period that precedes the interference (PPI) was of 28 days, showing that just one elimination of weeds in the interval between the end of TPIP and the end of PPI, that is, between 14 and 28 days, would be enough to prevent interference. |
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Effects of control periods and the presence of weeds in lettuce cultureEfeitos de períodos de controle e de convivência de plantas daninhas na cultura da alfacealfaceplantas daninhascompetição5.01.00.00-9 AgronomiaThe effects of different control periods and the presence of weeds in lettuce, cv. Elisa, were evaluated. The treatments consisted of maintaining the culture in the presence or absence of weeds for periods of 7, 14, 21, 28, 35, 42 e 49 days after transplantation. A control period of 14 days was enough for the crop to show its productive potential. For crescent periods in the presence of weeds, the crop can live with the infesting community for a period of 28 days without yield reduction. Thus, the duration of the total period of interference prevention (TPIP) was 14 days, and the period that precedes the interference (PPI) was of 28 days, showing that just one elimination of weeds in the interval between the end of TPIP and the end of PPI, that is, between 14 and 28 days, would be enough to prevent interference.Os efeitos de diferentes períodos de controle e de convivência de plantas daninhas, na cultura da alface, cultivar Elisa, foram avaliados. Instalou-se um experimento mantendo a cultura na presença ou na ausência de plantas daninhas por 7, 14, 21, 28, 35, 42 e 49 dias após o transplante. O período de 14 dias de controle foi suficiente para que a cultura expressasse seu potencial produtivo. Para períodos iniciais crescentes, na presença de plantas daninhas, verificou-se que a convivência por até 28 dias não prejudicou a produção. Assim, a duração do período total de prevenção da interferência (PTPI) foi de 14 dias e do período que antecede a interferência (PAI), 28 dias. Como o PAI foi maior que o PTPI, conclui-se que uma eliminação das plantas daninhas, desde que realizada entre o final do PTPI e o final do PAI, ou seja, entre 14 e 28 dias, seria suficiente para prevenir a interferência.Universidade Estadual de Maringá2008-07-14info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/429510.4025/actasciagron.v21i0.4295Acta Scientiarum. Agronomy; Vol 21 (1999); 473-478Acta Scientiarum. Agronomy; v. 21 (1999); 473-4781807-86211679-9275reponame:Acta Scientiarum. Agronomy (Online)instname:Universidade Estadual de Maringá (UEM)instacron:UEMporhttp://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/4295/2935Silva, Andréia CristinaSantos, Humberto SilvaScapim, Carlos AlbertoConstantin, Jamilinfo:eu-repo/semantics/openAccess2022-11-23T18:38:04Zoai:periodicos.uem.br/ojs:article/4295Revistahttp://www.periodicos.uem.br/ojs/index.php/ActaSciAgronPUBhttp://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/oaiactaagron@uem.br||actaagron@uem.br|| edamasio@uem.br1807-86211679-9275opendoar:2022-11-23T18:38:04Acta Scientiarum. Agronomy (Online) - Universidade Estadual de Maringá (UEM)false |
dc.title.none.fl_str_mv |
Effects of control periods and the presence of weeds in lettuce culture Efeitos de períodos de controle e de convivência de plantas daninhas na cultura da alface |
title |
Effects of control periods and the presence of weeds in lettuce culture |
spellingShingle |
Effects of control periods and the presence of weeds in lettuce culture Silva, Andréia Cristina alface plantas daninhas competição 5.01.00.00-9 Agronomia |
title_short |
Effects of control periods and the presence of weeds in lettuce culture |
title_full |
Effects of control periods and the presence of weeds in lettuce culture |
title_fullStr |
Effects of control periods and the presence of weeds in lettuce culture |
title_full_unstemmed |
Effects of control periods and the presence of weeds in lettuce culture |
title_sort |
Effects of control periods and the presence of weeds in lettuce culture |
author |
Silva, Andréia Cristina |
author_facet |
Silva, Andréia Cristina Santos, Humberto Silva Scapim, Carlos Alberto Constantin, Jamil |
author_role |
author |
author2 |
Santos, Humberto Silva Scapim, Carlos Alberto Constantin, Jamil |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Silva, Andréia Cristina Santos, Humberto Silva Scapim, Carlos Alberto Constantin, Jamil |
dc.subject.por.fl_str_mv |
alface plantas daninhas competição 5.01.00.00-9 Agronomia |
topic |
alface plantas daninhas competição 5.01.00.00-9 Agronomia |
description |
The effects of different control periods and the presence of weeds in lettuce, cv. Elisa, were evaluated. The treatments consisted of maintaining the culture in the presence or absence of weeds for periods of 7, 14, 21, 28, 35, 42 e 49 days after transplantation. A control period of 14 days was enough for the crop to show its productive potential. For crescent periods in the presence of weeds, the crop can live with the infesting community for a period of 28 days without yield reduction. Thus, the duration of the total period of interference prevention (TPIP) was 14 days, and the period that precedes the interference (PPI) was of 28 days, showing that just one elimination of weeds in the interval between the end of TPIP and the end of PPI, that is, between 14 and 28 days, would be enough to prevent interference. |
publishDate |
2008 |
dc.date.none.fl_str_mv |
2008-07-14 |
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 |
http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/4295 10.4025/actasciagron.v21i0.4295 |
url |
http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/4295 |
identifier_str_mv |
10.4025/actasciagron.v21i0.4295 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/4295/2935 |
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 |
Universidade Estadual de Maringá |
publisher.none.fl_str_mv |
Universidade Estadual de Maringá |
dc.source.none.fl_str_mv |
Acta Scientiarum. Agronomy; Vol 21 (1999); 473-478 Acta Scientiarum. Agronomy; v. 21 (1999); 473-478 1807-8621 1679-9275 reponame:Acta Scientiarum. Agronomy (Online) instname:Universidade Estadual de Maringá (UEM) instacron:UEM |
instname_str |
Universidade Estadual de Maringá (UEM) |
instacron_str |
UEM |
institution |
UEM |
reponame_str |
Acta Scientiarum. Agronomy (Online) |
collection |
Acta Scientiarum. Agronomy (Online) |
repository.name.fl_str_mv |
Acta Scientiarum. Agronomy (Online) - Universidade Estadual de Maringá (UEM) |
repository.mail.fl_str_mv |
actaagron@uem.br||actaagron@uem.br|| edamasio@uem.br |
_version_ |
1799305906924552192 |