Effect of soil moisture on the physiology of eucalyptus in competition with weeds
| Autor(a) principal: | |
|---|---|
| Data de Publicação: | 2021 |
| Outros Autores: | , , , , , , , , |
| Tipo de documento: | Artigo |
| Idioma: | por |
| Título da fonte: | Research, Society and Development |
| Texto Completo: | https://rsdjournal.org/index.php/rsd/article/view/17256 |
Resumo: | Competition with weeds for water or light can affect physiological parameters of the crops of interest. From this study, the objective was to evaluate the effect of soil moisture and the competition of two weed species in different combinations on the physiological characteristics of eucalyptus plants. The experimental design used was randomized with four replications in a 4 x 4 factorial scheme. The first factor corresponded to the combinations of eucalyptus clonal hybrid plants grown in competition with black sting and brachiaria: 1 - One eucalyptus plant + two brachiaria plants per pot; 2 - One eucalyptus plant + two black sting per pot; 3 - One eucalyptus plant + one black sting plant + one brachiaria plant per pot, and; 4 - one eucalyptus plant per pot. The second corresponded to soil water levels: 100, 74, 67 and 60% of field capacity. Evaluations of chlorophyll a, b, a/b and total contents were made, as well as variables related to chlorophyll fluorescence. The eucalyptus growing alone showed higher values of chlorophyll a chlorophyll b and total chlorophyll. The chlorophyll a/b ratio was lower at all soil moisture levels. The initial fluorescence showed a tendency to decrease with increasing humidity. At the lowest moisture levels tested, the eucalyptus plants were under stress condition with variable fluorescence/maximum fluorescence values below 0.75. |
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Effect of soil moisture on the physiology of eucalyptus in competition with weedsEfecto de la humedad del suelo sobre la fisiología del eucalipto en competencia con las malezasEfeito da umidade do solo na fisiologia do eucalipto em competição com plantas daninhasBidens pilosaUrochloa brizanthaChlorophyll FluorescenceChlorophyll contentePhotosynthesis.Bidens pilosaUrochloa brizanthaFluorescencia de clorofilaContenido de clorofilaFotosíntesis.Bidens pilosaUrochloa brizanthaFluorescência da clorofilaTeor de clorofilaFotossíntese.Competition with weeds for water or light can affect physiological parameters of the crops of interest. From this study, the objective was to evaluate the effect of soil moisture and the competition of two weed species in different combinations on the physiological characteristics of eucalyptus plants. The experimental design used was randomized with four replications in a 4 x 4 factorial scheme. The first factor corresponded to the combinations of eucalyptus clonal hybrid plants grown in competition with black sting and brachiaria: 1 - One eucalyptus plant + two brachiaria plants per pot; 2 - One eucalyptus plant + two black sting per pot; 3 - One eucalyptus plant + one black sting plant + one brachiaria plant per pot, and; 4 - one eucalyptus plant per pot. The second corresponded to soil water levels: 100, 74, 67 and 60% of field capacity. Evaluations of chlorophyll a, b, a/b and total contents were made, as well as variables related to chlorophyll fluorescence. The eucalyptus growing alone showed higher values of chlorophyll a chlorophyll b and total chlorophyll. The chlorophyll a/b ratio was lower at all soil moisture levels. The initial fluorescence showed a tendency to decrease with increasing humidity. At the lowest moisture levels tested, the eucalyptus plants were under stress condition with variable fluorescence/maximum fluorescence values below 0.75.La competencia con las malezas por el agua o la luz puede afectar los parámetros fisiológicos de los cultivos de interés. A partir de este estudio, el objetivo fue evaluar el efecto de la humedad del suelo y la competencia de dos especies de malezas en diferentes combinaciones sobre las características fisiológicas de las plantas de eucalipto. El diseño experimental utilizado fue aleatorizado con cuatro repeticiones en un esquema factorial 4 x 4. El primer factor correspondió a las combinaciones de plantas híbridas clonales de eucalipto cultivadas en competencia con beggarticks y brachiaria: 1 - Una planta de eucalipto + dos plantas de brachiaria por maceta; 2 - Una planta de eucalipto + dos mendigos por maceta; 3 - Una planta de eucalipto + una planta beggartick + una planta de brachiaria por maceta, y; 4 - una planta de eucalipto por maceta. El segundo correspondió a los niveles de agua del suelo: 100, 74, 67 y 60% de la capacidad de campo. Se realizaron evaluaciones de clorofila a, b, a/b y contenido total, así como variables relacionadas con la fluorescencia de clorofila. El eucalipto que creció solo mostró valores más altos de clorofila a, clorofila b y clorofila total. La proporción de clorofila a/b fue menor en todos los niveles de humedad del suelo. La fluorescencia inicial mostró una tendencia a disminuir al aumentar la humedad. Nas menores umidades testadas as plantas de eucalipto se encontravam em condição de estresse com valores de fluorescência variável/fluorescência máxima inferiores a 0,75.A competição com plantas daninhas por água ou luz pode afetar parâmetros fisiológicos das culturas de interesse. A partir desse estudo, objetivou-se avaliar o efeito da umidade do solo e a competição de duas espécies de plantas daninhas em diferentes combinações nas características fisiológicas de plantas de eucalipto. O delineamento experimental utilizado foi ao acaso com quatro repetições em esquema fatorial 4 x 4. O primeiro fator correspondeu às combinações de plantas do híbrido clonal de eucalipto cultivadas em competição com picão-preto e braquiária: 1 - Uma planta de eucalipto + duas plantas de braquiária por vaso; 2 - Uma planta de eucalipto + duas de picão-preto por vaso; 3 - Uma planta de eucalipto + uma planta de picão-preto + uma planta de braquiária por vaso, e; 4 - uma planta de eucalipto por vaso. O segundo correspondeu aos níveis de água no solo: 100, 74, 67 e 60% da capacidade de campo. Foram feitas avaliações dos teores de clorofila a, b, a/b e total, bem como, variáveis relacionadas a fluorescência da clorofila. O eucalipto crescendo isoladamente mostrou maiores valores de clorofila a clorofila b e clorofila total. A relação clorofila a/ b foi inferior em todos os níveis de umidade do solo. A fluorescência inicial mostrou tendência de decréscimo com o aumento da umidade. Nas menores umidades testadas as plantas de eucalipto se encontravam em condição de estresse com valores de fluorescência variável/fluorescência máxima inferiores a 0,75.Research, Society and Development2021-07-14info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://rsdjournal.org/index.php/rsd/article/view/1725610.33448/rsd-v10i8.17256Research, Society and Development; Vol. 10 No. 8; e36010817256Research, Society and Development; Vol. 10 Núm. 8; e36010817256Research, Society and Development; v. 10 n. 8; e360108172562525-3409reponame:Research, Society and Developmentinstname:Universidade Federal de Itajubá (UNIFEI)instacron:UNIFEIporhttps://rsdjournal.org/index.php/rsd/article/view/17256/15576Copyright (c) 2021 Brenda Thaís Barbalho Alencar; Evander Alves Ferreira; Tayna Sousa Duque; Josiane Costa Maciel; Maria Sebastiana Carmindo da Silva; Josiely Borges de Souza ; Débora Sampaio Mendes; Daniela Keley Custódio; Cássia Michelle Cabral; Regynaldo Arruda Sampaiohttps://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessAlencar, Brenda Thaís Barbalho Ferreira, Evander Alves Duque, Tayna Sousa Maciel, Josiane Costa Silva, Maria Sebastiana Carmindo da Souza , Josiely Borges de Mendes, Débora Sampaio Custódio, Daniela Keley Cabral, Cássia Michelle Sampaio, Regynaldo Arruda 2021-08-21T18:46:59Zoai:ojs.pkp.sfu.ca:article/17256Revistahttps://rsdjournal.org/index.php/rsd/indexPUBhttps://rsdjournal.org/index.php/rsd/oairsd.articles@gmail.com2525-34092525-3409opendoar:2024-01-17T09:37:38.189772Research, Society and Development - Universidade Federal de Itajubá (UNIFEI)false |
| dc.title.none.fl_str_mv |
Effect of soil moisture on the physiology of eucalyptus in competition with weeds Efecto de la humedad del suelo sobre la fisiología del eucalipto en competencia con las malezas Efeito da umidade do solo na fisiologia do eucalipto em competição com plantas daninhas |
| title |
Effect of soil moisture on the physiology of eucalyptus in competition with weeds |
| spellingShingle |
Effect of soil moisture on the physiology of eucalyptus in competition with weeds Alencar, Brenda Thaís Barbalho Bidens pilosa Urochloa brizantha Chlorophyll Fluorescence Chlorophyll contente Photosynthesis. Bidens pilosa Urochloa brizantha Fluorescencia de clorofila Contenido de clorofila Fotosíntesis. Bidens pilosa Urochloa brizantha Fluorescência da clorofila Teor de clorofila Fotossíntese. |
| title_short |
Effect of soil moisture on the physiology of eucalyptus in competition with weeds |
| title_full |
Effect of soil moisture on the physiology of eucalyptus in competition with weeds |
| title_fullStr |
Effect of soil moisture on the physiology of eucalyptus in competition with weeds |
| title_full_unstemmed |
Effect of soil moisture on the physiology of eucalyptus in competition with weeds |
| title_sort |
Effect of soil moisture on the physiology of eucalyptus in competition with weeds |
| author |
Alencar, Brenda Thaís Barbalho |
| author_facet |
Alencar, Brenda Thaís Barbalho Ferreira, Evander Alves Duque, Tayna Sousa Maciel, Josiane Costa Silva, Maria Sebastiana Carmindo da Souza , Josiely Borges de Mendes, Débora Sampaio Custódio, Daniela Keley Cabral, Cássia Michelle Sampaio, Regynaldo Arruda |
| author_role |
author |
| author2 |
Ferreira, Evander Alves Duque, Tayna Sousa Maciel, Josiane Costa Silva, Maria Sebastiana Carmindo da Souza , Josiely Borges de Mendes, Débora Sampaio Custódio, Daniela Keley Cabral, Cássia Michelle Sampaio, Regynaldo Arruda |
| author2_role |
author author author author author author author author author |
| dc.contributor.author.fl_str_mv |
Alencar, Brenda Thaís Barbalho Ferreira, Evander Alves Duque, Tayna Sousa Maciel, Josiane Costa Silva, Maria Sebastiana Carmindo da Souza , Josiely Borges de Mendes, Débora Sampaio Custódio, Daniela Keley Cabral, Cássia Michelle Sampaio, Regynaldo Arruda |
| dc.subject.por.fl_str_mv |
Bidens pilosa Urochloa brizantha Chlorophyll Fluorescence Chlorophyll contente Photosynthesis. Bidens pilosa Urochloa brizantha Fluorescencia de clorofila Contenido de clorofila Fotosíntesis. Bidens pilosa Urochloa brizantha Fluorescência da clorofila Teor de clorofila Fotossíntese. |
| topic |
Bidens pilosa Urochloa brizantha Chlorophyll Fluorescence Chlorophyll contente Photosynthesis. Bidens pilosa Urochloa brizantha Fluorescencia de clorofila Contenido de clorofila Fotosíntesis. Bidens pilosa Urochloa brizantha Fluorescência da clorofila Teor de clorofila Fotossíntese. |
| description |
Competition with weeds for water or light can affect physiological parameters of the crops of interest. From this study, the objective was to evaluate the effect of soil moisture and the competition of two weed species in different combinations on the physiological characteristics of eucalyptus plants. The experimental design used was randomized with four replications in a 4 x 4 factorial scheme. The first factor corresponded to the combinations of eucalyptus clonal hybrid plants grown in competition with black sting and brachiaria: 1 - One eucalyptus plant + two brachiaria plants per pot; 2 - One eucalyptus plant + two black sting per pot; 3 - One eucalyptus plant + one black sting plant + one brachiaria plant per pot, and; 4 - one eucalyptus plant per pot. The second corresponded to soil water levels: 100, 74, 67 and 60% of field capacity. Evaluations of chlorophyll a, b, a/b and total contents were made, as well as variables related to chlorophyll fluorescence. The eucalyptus growing alone showed higher values of chlorophyll a chlorophyll b and total chlorophyll. The chlorophyll a/b ratio was lower at all soil moisture levels. The initial fluorescence showed a tendency to decrease with increasing humidity. At the lowest moisture levels tested, the eucalyptus plants were under stress condition with variable fluorescence/maximum fluorescence values below 0.75. |
| publishDate |
2021 |
| dc.date.none.fl_str_mv |
2021-07-14 |
| dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
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article |
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publishedVersion |
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https://rsdjournal.org/index.php/rsd/article/view/17256 10.33448/rsd-v10i8.17256 |
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https://rsdjournal.org/index.php/rsd/article/view/17256 |
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10.33448/rsd-v10i8.17256 |
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por |
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por |
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https://rsdjournal.org/index.php/rsd/article/view/17256/15576 |
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https://creativecommons.org/licenses/by/4.0 info:eu-repo/semantics/openAccess |
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https://creativecommons.org/licenses/by/4.0 |
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openAccess |
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application/pdf |
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Research, Society and Development |
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Research, Society and Development |
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Research, Society and Development; Vol. 10 No. 8; e36010817256 Research, Society and Development; Vol. 10 Núm. 8; e36010817256 Research, Society and Development; v. 10 n. 8; e36010817256 2525-3409 reponame:Research, Society and Development instname:Universidade Federal de Itajubá (UNIFEI) instacron:UNIFEI |
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Universidade Federal de Itajubá (UNIFEI) |
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UNIFEI |
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UNIFEI |
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Research, Society and Development |
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Research, Society and Development |
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Research, Society and Development - Universidade Federal de Itajubá (UNIFEI) |
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rsd.articles@gmail.com |
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