Sowing depth and light intensity in the emergence and development of monocotyledonous weeds
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Bioscience journal (Online) |
Texto Completo: | https://seer.ufu.br/index.php/biosciencejournal/article/view/60820 |
Resumo: | This study aimed to evaluate the effects of different sowing depths and light intensities on the emergence and development of the monocot weed species, Urochloa decumbens and Cenchrus echinatus, under field conditions. Each species constituted an experiment, and the experimental design was completely randomized with four replicates. The treatments were arranged in a 6 x 4 factorial scheme, with six sowing depths (0.5, 1.0, 2.0, 4.0, 8.0, and 12.0 cm) associated with four solar radiation intensities (100%, 70%, 50%, and 30%) obtained through the use of shading screens. Seedling emergence capacity was evaluated daily to obtain the emergence percentage and speed index. Plant height, floral induction time, and plant dry matter at flowering were measured. Even when subjected to different solar radiation intensities, U. decumbens and C. echinatus seedlings emerged at all the sowing depths. Sowing between 2.0- and 4.0-cm depths favored the emergence of seedlings of U. decumbens and C. echinatus. However, sowing at 12-cm depth reduced the emergence of both species regardless of the solar radiation intensity. Urichloa decumbens plants grown under conditions of greater shading showed the lowest values of height and dry matter accumulation during flowering. High levels of shading facilitated only the etiolation of C. echinatus plants. Increased shading flowering time in both species compared to full sunlight. |
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Sowing depth and light intensity in the emergence and development of monocotyledonous weedsBrightnessCenchrus echinatusField condition ShadingUrochloa decumbens. Agricultural SciencesThis study aimed to evaluate the effects of different sowing depths and light intensities on the emergence and development of the monocot weed species, Urochloa decumbens and Cenchrus echinatus, under field conditions. Each species constituted an experiment, and the experimental design was completely randomized with four replicates. The treatments were arranged in a 6 x 4 factorial scheme, with six sowing depths (0.5, 1.0, 2.0, 4.0, 8.0, and 12.0 cm) associated with four solar radiation intensities (100%, 70%, 50%, and 30%) obtained through the use of shading screens. Seedling emergence capacity was evaluated daily to obtain the emergence percentage and speed index. Plant height, floral induction time, and plant dry matter at flowering were measured. Even when subjected to different solar radiation intensities, U. decumbens and C. echinatus seedlings emerged at all the sowing depths. Sowing between 2.0- and 4.0-cm depths favored the emergence of seedlings of U. decumbens and C. echinatus. However, sowing at 12-cm depth reduced the emergence of both species regardless of the solar radiation intensity. Urichloa decumbens plants grown under conditions of greater shading showed the lowest values of height and dry matter accumulation during flowering. High levels of shading facilitated only the etiolation of C. echinatus plants. Increased shading flowering time in both species compared to full sunlight.EDUFU2022-09-23info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.ufu.br/index.php/biosciencejournal/article/view/6082010.14393/BJ-v38n0a2022-60820Bioscience Journal ; Vol. 38 (2022): Continuous Publication; e38083Bioscience Journal ; v. 38 (2022): Continuous Publication; e380831981-3163reponame:Bioscience journal (Online)instname:Universidade Federal de Uberlândia (UFU)instacron:UFUenghttps://seer.ufu.br/index.php/biosciencejournal/article/view/60820/34652Brazil; Contemporary Copyright (c) 2022 Ricardo Fagundes Marques, Guilherme Sasso Ferreira Souza, Maria Renata Rocha Pereira, Sidnei Roberto de Marchi, Dagoberto Martinshttps://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessFagundes Marques, RicardoSouza, Guilherme Sasso FerreiraPereira, Maria Renata RochaRoberto de Marchi, SidneiMartins, Dagoberto2022-09-23T14:47:33Zoai:ojs.www.seer.ufu.br:article/60820Revistahttps://seer.ufu.br/index.php/biosciencejournalPUBhttps://seer.ufu.br/index.php/biosciencejournal/oaibiosciencej@ufu.br||1981-31631516-3725opendoar:2022-09-23T14:47:33Bioscience journal (Online) - Universidade Federal de Uberlândia (UFU)false |
dc.title.none.fl_str_mv |
Sowing depth and light intensity in the emergence and development of monocotyledonous weeds |
title |
Sowing depth and light intensity in the emergence and development of monocotyledonous weeds |
spellingShingle |
Sowing depth and light intensity in the emergence and development of monocotyledonous weeds Fagundes Marques, Ricardo Brightness Cenchrus echinatus Field condition Shading Urochloa decumbens. Agricultural Sciences |
title_short |
Sowing depth and light intensity in the emergence and development of monocotyledonous weeds |
title_full |
Sowing depth and light intensity in the emergence and development of monocotyledonous weeds |
title_fullStr |
Sowing depth and light intensity in the emergence and development of monocotyledonous weeds |
title_full_unstemmed |
Sowing depth and light intensity in the emergence and development of monocotyledonous weeds |
title_sort |
Sowing depth and light intensity in the emergence and development of monocotyledonous weeds |
author |
Fagundes Marques, Ricardo |
author_facet |
Fagundes Marques, Ricardo Souza, Guilherme Sasso Ferreira Pereira, Maria Renata Rocha Roberto de Marchi, Sidnei Martins, Dagoberto |
author_role |
author |
author2 |
Souza, Guilherme Sasso Ferreira Pereira, Maria Renata Rocha Roberto de Marchi, Sidnei Martins, Dagoberto |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Fagundes Marques, Ricardo Souza, Guilherme Sasso Ferreira Pereira, Maria Renata Rocha Roberto de Marchi, Sidnei Martins, Dagoberto |
dc.subject.por.fl_str_mv |
Brightness Cenchrus echinatus Field condition Shading Urochloa decumbens. Agricultural Sciences |
topic |
Brightness Cenchrus echinatus Field condition Shading Urochloa decumbens. Agricultural Sciences |
description |
This study aimed to evaluate the effects of different sowing depths and light intensities on the emergence and development of the monocot weed species, Urochloa decumbens and Cenchrus echinatus, under field conditions. Each species constituted an experiment, and the experimental design was completely randomized with four replicates. The treatments were arranged in a 6 x 4 factorial scheme, with six sowing depths (0.5, 1.0, 2.0, 4.0, 8.0, and 12.0 cm) associated with four solar radiation intensities (100%, 70%, 50%, and 30%) obtained through the use of shading screens. Seedling emergence capacity was evaluated daily to obtain the emergence percentage and speed index. Plant height, floral induction time, and plant dry matter at flowering were measured. Even when subjected to different solar radiation intensities, U. decumbens and C. echinatus seedlings emerged at all the sowing depths. Sowing between 2.0- and 4.0-cm depths favored the emergence of seedlings of U. decumbens and C. echinatus. However, sowing at 12-cm depth reduced the emergence of both species regardless of the solar radiation intensity. Urichloa decumbens plants grown under conditions of greater shading showed the lowest values of height and dry matter accumulation during flowering. High levels of shading facilitated only the etiolation of C. echinatus plants. Increased shading flowering time in both species compared to full sunlight. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-09-23 |
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.ufu.br/index.php/biosciencejournal/article/view/60820 10.14393/BJ-v38n0a2022-60820 |
url |
https://seer.ufu.br/index.php/biosciencejournal/article/view/60820 |
identifier_str_mv |
10.14393/BJ-v38n0a2022-60820 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://seer.ufu.br/index.php/biosciencejournal/article/view/60820/34652 |
dc.rights.driver.fl_str_mv |
https://creativecommons.org/licenses/by/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by/4.0 |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.coverage.none.fl_str_mv |
Brazil; Contemporary |
dc.publisher.none.fl_str_mv |
EDUFU |
publisher.none.fl_str_mv |
EDUFU |
dc.source.none.fl_str_mv |
Bioscience Journal ; Vol. 38 (2022): Continuous Publication; e38083 Bioscience Journal ; v. 38 (2022): Continuous Publication; e38083 1981-3163 reponame:Bioscience journal (Online) instname:Universidade Federal de Uberlândia (UFU) instacron:UFU |
instname_str |
Universidade Federal de Uberlândia (UFU) |
instacron_str |
UFU |
institution |
UFU |
reponame_str |
Bioscience journal (Online) |
collection |
Bioscience journal (Online) |
repository.name.fl_str_mv |
Bioscience journal (Online) - Universidade Federal de Uberlândia (UFU) |
repository.mail.fl_str_mv |
biosciencej@ufu.br|| |
_version_ |
1797069066017439744 |