Periods of weed interference in chickpea grown under different doses of nitrogen fertilizer topdressing
Autor(a) principal: | |
---|---|
Data de Publicação: | 2018 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.4025/actasciagron.v40i1.35666 http://hdl.handle.net/11449/160329 |
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. |
id |
UNSP_a5859ce2fb8f5d4c10ca7fa2e7e97260 |
---|---|
oai_identifier_str |
oai:repositorio.unesp.br:11449/160329 |
network_acronym_str |
UNSP |
network_name_str |
Repositório Institucional da UNESP |
repository_id_str |
2946 |
spelling |
Periods of weed interference in chickpea grown under different doses of nitrogen fertilizer topdressingCicer arietinum L.coexistence periodscritical period of interferenceproductivityWeed 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.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Univ Estadual Paulista, Fac Ciencias Agr & Vet, Zona Rural, Rod Acesso Prof Paulo Donato Castellane,Km 05, BR-14884900 Sao Paulo, BrazilUniv Estadual Paulista, Fac Ciencias Agr & Vet, Zona Rural, Rod Acesso Prof Paulo Donato Castellane,Km 05, BR-14884900 Sao Paulo, BrazilCAPES: 2010/14018-0CAPES: 2010/07809-1FAPESP: 2010/14018-0FAPESP: 2010/07809-1Univ Estadual Maringa, Pro-reitoria Pesquisa Pos-graduacaoUniversidade Estadual Paulista (Unesp)Amaral, Carita Liberato [UNESP]Pavan, Guilherme Bacarin [UNESP]Mastrotti Pereira, Fernanda Campos [UNESP]Costa Aguiar Alves, Pedro Luis da [UNESP]2018-11-26T16:01:24Z2018-11-26T16:01:24Z2018-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article10application/pdfhttp://dx.doi.org/10.4025/actasciagron.v40i1.35666Acta Scientiarum-agronomy. Maringa: Univ Estadual Maringa, Pro-reitoria Pesquisa Pos-graduacao, v. 40, 10 p., 2018.1807-8621http://hdl.handle.net/11449/16032910.4025/actasciagron.v40i1.35666S1807-86212018000100204WOS:000434029200001S1807-86212018000100204.pdfWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengActa Scientiarum-agronomyinfo:eu-repo/semantics/openAccess2023-12-27T06:18:15Zoai:repositorio.unesp.br:11449/160329Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T21:25:28.681886Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)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 [UNESP] Cicer arietinum L. coexistence periods critical period of interference productivity |
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 [UNESP] |
author_facet |
Amaral, Carita Liberato [UNESP] Pavan, Guilherme Bacarin [UNESP] Mastrotti Pereira, Fernanda Campos [UNESP] Costa Aguiar Alves, Pedro Luis da [UNESP] |
author_role |
author |
author2 |
Pavan, Guilherme Bacarin [UNESP] Mastrotti Pereira, Fernanda Campos [UNESP] Costa Aguiar Alves, Pedro Luis da [UNESP] |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Amaral, Carita Liberato [UNESP] Pavan, Guilherme Bacarin [UNESP] Mastrotti Pereira, Fernanda Campos [UNESP] Costa Aguiar Alves, Pedro Luis da [UNESP] |
dc.subject.por.fl_str_mv |
Cicer arietinum L. coexistence periods critical period of interference productivity |
topic |
Cicer arietinum L. coexistence periods critical period of interference productivity |
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 |
2018-11-26T16:01:24Z 2018-11-26T16:01:24Z 2018-01-01 |
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/10.4025/actasciagron.v40i1.35666 Acta Scientiarum-agronomy. Maringa: Univ Estadual Maringa, Pro-reitoria Pesquisa Pos-graduacao, v. 40, 10 p., 2018. 1807-8621 http://hdl.handle.net/11449/160329 10.4025/actasciagron.v40i1.35666 S1807-86212018000100204 WOS:000434029200001 S1807-86212018000100204.pdf |
url |
http://dx.doi.org/10.4025/actasciagron.v40i1.35666 http://hdl.handle.net/11449/160329 |
identifier_str_mv |
Acta Scientiarum-agronomy. Maringa: Univ Estadual Maringa, Pro-reitoria Pesquisa Pos-graduacao, v. 40, 10 p., 2018. 1807-8621 10.4025/actasciagron.v40i1.35666 S1807-86212018000100204 WOS:000434029200001 S1807-86212018000100204.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Acta Scientiarum-agronomy |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
10 application/pdf |
dc.publisher.none.fl_str_mv |
Univ Estadual Maringa, Pro-reitoria Pesquisa Pos-graduacao |
publisher.none.fl_str_mv |
Univ Estadual Maringa, Pro-reitoria Pesquisa Pos-graduacao |
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 |
|
_version_ |
1808129318287572992 |