Light intensity and sowing depth on the emergence and development of weeds
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.51694/AdvWeedSci/2021;39:00016 http://hdl.handle.net/11449/218931 |
Resumo: | Background: Weeds are one of the ecological factors that affect the agricultural economy permanently. Thus, understanding the weed emergence and development is essential in decision making for management strategies. Objective: This study aimed to evaluate the effect of different sowing depths and light intensities on the emergence and development of the weed species Euphorbia heterophylla and Desmodium tortuosum under field conditions. Methods: Each species consisted of an experiment carried out in a completely randomized design with four replications. 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 light intensities (100, 70, 50, and 30% of the solar light intensity) obtained with shading screens. Seedling emergence capacity was evaluated daily to obtain the percentage of emergence and the emergence rate index (ERI). Plant height, time to floral induction, plant dry matter during flowering were also evaluated. Results: Seedlings of E. heterophylla emerged under all solar radiation conditions and sowing up to 12.0 cm deep, while seedlings of D. tortuosum showed no emergence only at 12.0 cm deep with light intensities below 70%. The 100% solar radiation condition provided higher total and daily dry matter accumulation in E. heterophylla plants, while D. tortuosum plants showed higher values for both variables under 70 and 50% incidence of solar radiation. Conclusions: The full sunlight condition provided the best development of E. heterophylla plants. Different levels of lightness and sowing depths interfere the emergence and the development of D. tortuosum plants. |
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Repositório Institucional da UNESP |
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Light intensity and sowing depth on the emergence and development of weedsEuphorbia heterophyllaDesmodium tortuosumshadinglightnessfield conditionBackground: Weeds are one of the ecological factors that affect the agricultural economy permanently. Thus, understanding the weed emergence and development is essential in decision making for management strategies. Objective: This study aimed to evaluate the effect of different sowing depths and light intensities on the emergence and development of the weed species Euphorbia heterophylla and Desmodium tortuosum under field conditions. Methods: Each species consisted of an experiment carried out in a completely randomized design with four replications. 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 light intensities (100, 70, 50, and 30% of the solar light intensity) obtained with shading screens. Seedling emergence capacity was evaluated daily to obtain the percentage of emergence and the emergence rate index (ERI). Plant height, time to floral induction, plant dry matter during flowering were also evaluated. Results: Seedlings of E. heterophylla emerged under all solar radiation conditions and sowing up to 12.0 cm deep, while seedlings of D. tortuosum showed no emergence only at 12.0 cm deep with light intensities below 70%. The 100% solar radiation condition provided higher total and daily dry matter accumulation in E. heterophylla plants, while D. tortuosum plants showed higher values for both variables under 70 and 50% incidence of solar radiation. Conclusions: The full sunlight condition provided the best development of E. heterophylla plants. Different levels of lightness and sowing depths interfere the emergence and the development of D. tortuosum plants.Univ Estadual Paulista, Fac Ciencias Agron, Botucatu, SP, BrazilUniv Estadual Paulista, Fac Ciencias Agr & Vet, Jaboticabal, SP, BrazilFac Tecnol Capao Bonito, Capao Bonito, SP, BrazilUniv Fed Mato Grosso, Barra Do Garcas, MT, BrazilUniv Estadual Paulista, Fac Ciencias Agron, Botucatu, SP, BrazilUniv Estadual Paulista, Fac Ciencias Agr & Vet, Jaboticabal, SP, BrazilSoc Brasileira Ciencia Plantas Daninhas-sbcpdUniversidade Estadual Paulista (UNESP)Fac Tecnol Capao BonitoUniversidade Federal de Mato Grosso do Sul (UFMS)Ferreira Souza, Guilherme Sasso [UNESP]Marques, Ricardo Fagundes [UNESP]Rocha Pereira, Maria RenataMarchi, Sidnei Roberto deMartins, Dagoberto [UNESP]2022-04-28T17:30:31Z2022-04-28T17:30:31Z2021-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article9http://dx.doi.org/10.51694/AdvWeedSci/2021;39:00016Advances In Weed Science. Jaboticabal: Soc Brasileira Ciencia Plantas Daninhas-sbcpd, v. 39, 9 p., 2021.2675-9462http://hdl.handle.net/11449/21893110.51694/AdvWeedSci/2021;39:00016WOS:000730085100001Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengAdvances In Weed Scienceinfo:eu-repo/semantics/openAccess2024-04-30T15:56:28Zoai:repositorio.unesp.br:11449/218931Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T17:23:05.508213Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Light intensity and sowing depth on the emergence and development of weeds |
title |
Light intensity and sowing depth on the emergence and development of weeds |
spellingShingle |
Light intensity and sowing depth on the emergence and development of weeds Ferreira Souza, Guilherme Sasso [UNESP] Euphorbia heterophylla Desmodium tortuosum shading lightness field condition |
title_short |
Light intensity and sowing depth on the emergence and development of weeds |
title_full |
Light intensity and sowing depth on the emergence and development of weeds |
title_fullStr |
Light intensity and sowing depth on the emergence and development of weeds |
title_full_unstemmed |
Light intensity and sowing depth on the emergence and development of weeds |
title_sort |
Light intensity and sowing depth on the emergence and development of weeds |
author |
Ferreira Souza, Guilherme Sasso [UNESP] |
author_facet |
Ferreira Souza, Guilherme Sasso [UNESP] Marques, Ricardo Fagundes [UNESP] Rocha Pereira, Maria Renata Marchi, Sidnei Roberto de Martins, Dagoberto [UNESP] |
author_role |
author |
author2 |
Marques, Ricardo Fagundes [UNESP] Rocha Pereira, Maria Renata Marchi, Sidnei Roberto de Martins, Dagoberto [UNESP] |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) Fac Tecnol Capao Bonito Universidade Federal de Mato Grosso do Sul (UFMS) |
dc.contributor.author.fl_str_mv |
Ferreira Souza, Guilherme Sasso [UNESP] Marques, Ricardo Fagundes [UNESP] Rocha Pereira, Maria Renata Marchi, Sidnei Roberto de Martins, Dagoberto [UNESP] |
dc.subject.por.fl_str_mv |
Euphorbia heterophylla Desmodium tortuosum shading lightness field condition |
topic |
Euphorbia heterophylla Desmodium tortuosum shading lightness field condition |
description |
Background: Weeds are one of the ecological factors that affect the agricultural economy permanently. Thus, understanding the weed emergence and development is essential in decision making for management strategies. Objective: This study aimed to evaluate the effect of different sowing depths and light intensities on the emergence and development of the weed species Euphorbia heterophylla and Desmodium tortuosum under field conditions. Methods: Each species consisted of an experiment carried out in a completely randomized design with four replications. 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 light intensities (100, 70, 50, and 30% of the solar light intensity) obtained with shading screens. Seedling emergence capacity was evaluated daily to obtain the percentage of emergence and the emergence rate index (ERI). Plant height, time to floral induction, plant dry matter during flowering were also evaluated. Results: Seedlings of E. heterophylla emerged under all solar radiation conditions and sowing up to 12.0 cm deep, while seedlings of D. tortuosum showed no emergence only at 12.0 cm deep with light intensities below 70%. The 100% solar radiation condition provided higher total and daily dry matter accumulation in E. heterophylla plants, while D. tortuosum plants showed higher values for both variables under 70 and 50% incidence of solar radiation. Conclusions: The full sunlight condition provided the best development of E. heterophylla plants. Different levels of lightness and sowing depths interfere the emergence and the development of D. tortuosum plants. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-01-01 2022-04-28T17:30:31Z 2022-04-28T17:30:31Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.51694/AdvWeedSci/2021;39:00016 Advances In Weed Science. Jaboticabal: Soc Brasileira Ciencia Plantas Daninhas-sbcpd, v. 39, 9 p., 2021. 2675-9462 http://hdl.handle.net/11449/218931 10.51694/AdvWeedSci/2021;39:00016 WOS:000730085100001 |
url |
http://dx.doi.org/10.51694/AdvWeedSci/2021;39:00016 http://hdl.handle.net/11449/218931 |
identifier_str_mv |
Advances In Weed Science. Jaboticabal: Soc Brasileira Ciencia Plantas Daninhas-sbcpd, v. 39, 9 p., 2021. 2675-9462 10.51694/AdvWeedSci/2021;39:00016 WOS:000730085100001 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Advances In Weed Science |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
9 |
dc.publisher.none.fl_str_mv |
Soc Brasileira Ciencia Plantas Daninhas-sbcpd |
publisher.none.fl_str_mv |
Soc Brasileira Ciencia Plantas Daninhas-sbcpd |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
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1808128802842214400 |