Periods of weed interference in chickpea grown under different doses of nitrogen fertilizer topdressing
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Acta Scientiarum. Agronomy (Online) |
Texto Completo: | http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/35666 |
Resumo: | Weed interference can reduce chickpea growth and, therefore, productivity depending on the period of coexistence and the nutritional status of the crop, among other factors. A study was performed over two crop years to estimate the critical period of weed interference (CPWI) during chickpea production under three doses of nitrogen (N) fertilizer topdressing (0, 50, and 75 kg N ha-1). The experiments were conducted at 0, 7, 14, 21, 28, 35, 42, 56, 63, and 140 days after emergence (DAE) of chickpea/weed coexistence under two conditions: initially weed-free and initially weed-infested. The presence of weeds negatively affected chickpea production and reduced yields by 70% on average regardless of N rate, rendering the crop economically unfeasible. The CPWI ranged from 5 to 76 DAE and was not affected by N topdressing up to 75 kg N ha-1 in both crop years, assuming an acceptable production loss of 5%. Although the CPWI without fertilization (0 kg N ha-1) was similar to that when fertilized with 50 and 75 kg N ha-1, the two topdressing doses increased chickpea productivity by 37% and 51%, on average, respectively. |
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Periods of weed interference in chickpea grown under different doses of nitrogen fertilizer topdressingCicer arietinum L.coexistence periodscritical period of interferenceproductivity.MatologiaWeed interference can reduce chickpea growth and, therefore, productivity depending on the period of coexistence and the nutritional status of the crop, among other factors. A study was performed over two crop years to estimate the critical period of weed interference (CPWI) during chickpea production under three doses of nitrogen (N) fertilizer topdressing (0, 50, and 75 kg N ha-1). The experiments were conducted at 0, 7, 14, 21, 28, 35, 42, 56, 63, and 140 days after emergence (DAE) of chickpea/weed coexistence under two conditions: initially weed-free and initially weed-infested. The presence of weeds negatively affected chickpea production and reduced yields by 70% on average regardless of N rate, rendering the crop economically unfeasible. The CPWI ranged from 5 to 76 DAE and was not affected by N topdressing up to 75 kg N ha-1 in both crop years, assuming an acceptable production loss of 5%. Although the CPWI without fertilization (0 kg N ha-1) was similar to that when fertilized with 50 and 75 kg N ha-1, the two topdressing doses increased chickpea productivity by 37% and 51%, on average, respectively. Universidade Estadual de Maringá2018-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioncampoapplication/pdfapplication/pdfhttp://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/3566610.4025/actasciagron.v40i1.35666Acta Scientiarum. Agronomy; Vol 40 (2018): Publicação Contínua; e35666Acta Scientiarum. Agronomy; v. 40 (2018): Publicação Contínua; e356661807-86211679-9275reponame:Acta Scientiarum. Agronomy (Online)instname:Universidade Estadual de Maringá (UEM)instacron:UEMenghttp://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/35666/pdfhttp://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/35666/751375145637Copyright (c) 2018 Acta Scientiarum. Agronomyinfo:eu-repo/semantics/openAccessAmaral, Carita LiberatoPavan, Guilherme BacarinPereira, Fernanda Campos MastrottiAlves, Pedro Luis da Costa Aguiar2019-09-24T12:26:47Zoai:periodicos.uem.br/ojs:article/35666Revistahttp://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:2019-09-24T12:26:47Acta Scientiarum. Agronomy (Online) - Universidade Estadual de Maringá (UEM)false |
dc.title.none.fl_str_mv |
Periods of weed interference in chickpea grown under different doses of nitrogen fertilizer topdressing |
title |
Periods of weed interference in chickpea grown under different doses of nitrogen fertilizer topdressing |
spellingShingle |
Periods of weed interference in chickpea grown under different doses of nitrogen fertilizer topdressing Amaral, Carita Liberato Cicer arietinum L. coexistence periods critical period of interference productivity. Matologia |
title_short |
Periods of weed interference in chickpea grown under different doses of nitrogen fertilizer topdressing |
title_full |
Periods of weed interference in chickpea grown under different doses of nitrogen fertilizer topdressing |
title_fullStr |
Periods of weed interference in chickpea grown under different doses of nitrogen fertilizer topdressing |
title_full_unstemmed |
Periods of weed interference in chickpea grown under different doses of nitrogen fertilizer topdressing |
title_sort |
Periods of weed interference in chickpea grown under different doses of nitrogen fertilizer topdressing |
author |
Amaral, Carita Liberato |
author_facet |
Amaral, Carita Liberato Pavan, Guilherme Bacarin Pereira, Fernanda Campos Mastrotti Alves, Pedro Luis da Costa Aguiar |
author_role |
author |
author2 |
Pavan, Guilherme Bacarin Pereira, Fernanda Campos Mastrotti Alves, Pedro Luis da Costa Aguiar |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Amaral, Carita Liberato Pavan, Guilherme Bacarin Pereira, Fernanda Campos Mastrotti Alves, Pedro Luis da Costa Aguiar |
dc.subject.por.fl_str_mv |
Cicer arietinum L. coexistence periods critical period of interference productivity. Matologia |
topic |
Cicer arietinum L. coexistence periods critical period of interference productivity. Matologia |
description |
Weed interference can reduce chickpea growth and, therefore, productivity depending on the period of coexistence and the nutritional status of the crop, among other factors. A study was performed over two crop years to estimate the critical period of weed interference (CPWI) during chickpea production under three doses of nitrogen (N) fertilizer topdressing (0, 50, and 75 kg N ha-1). The experiments were conducted at 0, 7, 14, 21, 28, 35, 42, 56, 63, and 140 days after emergence (DAE) of chickpea/weed coexistence under two conditions: initially weed-free and initially weed-infested. The presence of weeds negatively affected chickpea production and reduced yields by 70% on average regardless of N rate, rendering the crop economically unfeasible. The CPWI ranged from 5 to 76 DAE and was not affected by N topdressing up to 75 kg N ha-1 in both crop years, assuming an acceptable production loss of 5%. Although the CPWI without fertilization (0 kg N ha-1) was similar to that when fertilized with 50 and 75 kg N ha-1, the two topdressing doses increased chickpea productivity by 37% and 51%, on average, respectively. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-03-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion campo |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/35666 10.4025/actasciagron.v40i1.35666 |
url |
http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/35666 |
identifier_str_mv |
10.4025/actasciagron.v40i1.35666 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/35666/pdf http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/35666/751375145637 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2018 Acta Scientiarum. Agronomy info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2018 Acta Scientiarum. Agronomy |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf 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 40 (2018): Publicação Contínua; e35666 Acta Scientiarum. Agronomy; v. 40 (2018): Publicação Contínua; e35666 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_ |
1799305910028337152 |