Leaf area development and yield of cassava in response to pruning of shoots and the late supply of nitrogen and potassium
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1002/agj2.20113 http://hdl.handle.net/11449/200112 |
Resumo: | This study evaluated leaf area development, leaf nutritional content, and yield of pruned/unpruned cassava supplied with nitrogen (N) and potassium (K) during its second vegetative cycle. Two field experiments were conducted in a randomized complete-block design with split-plots and four replications. The treatments consisted of four management approaches that combined pruning/not pruning with or without K as the main plot and four N application rates (0, 50, 100, and 200 kg ha−1 N) as the subplots. The results revealed that an evaluation of the nutritional status of cassava during its second vegetative cycle should be considered if shoot pruning has been conducted because pruned plants had higher concentrations of N, P, and K in their leaves, and unpruned plants exhibited leaves with higher Ca, Fe, and Mn concentrations. Pruning of cassava shoots during the autumn/winter resting phase did not negatively affect root yield and may represent a recommended management practice for cassava cultivation. In soils with a medium level of K availability, K provision during the second cassava growth cycle is unnecessary because the application of K did not increase leaf reconstitution or yield components in either pruned or unpruned plants. The late application of N improved the nutritional status of cassava plants and increased their leaf area during the second growth cycle. Cassava root, starch, and flour yields increased in a linear fashion in response to the late application of N. |
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spelling |
Leaf area development and yield of cassava in response to pruning of shoots and the late supply of nitrogen and potassiumThis study evaluated leaf area development, leaf nutritional content, and yield of pruned/unpruned cassava supplied with nitrogen (N) and potassium (K) during its second vegetative cycle. Two field experiments were conducted in a randomized complete-block design with split-plots and four replications. The treatments consisted of four management approaches that combined pruning/not pruning with or without K as the main plot and four N application rates (0, 50, 100, and 200 kg ha−1 N) as the subplots. The results revealed that an evaluation of the nutritional status of cassava during its second vegetative cycle should be considered if shoot pruning has been conducted because pruned plants had higher concentrations of N, P, and K in their leaves, and unpruned plants exhibited leaves with higher Ca, Fe, and Mn concentrations. Pruning of cassava shoots during the autumn/winter resting phase did not negatively affect root yield and may represent a recommended management practice for cassava cultivation. In soils with a medium level of K availability, K provision during the second cassava growth cycle is unnecessary because the application of K did not increase leaf reconstitution or yield components in either pruned or unpruned plants. The late application of N improved the nutritional status of cassava plants and increased their leaf area during the second growth cycle. Cassava root, starch, and flour yields increased in a linear fashion in response to the late application of N.São Paulo State Univ. (UNESP) College of Agricultural Sciences Av. Universitária, 3780, Lageado Experimental Farm, 18610-034Current address of L.H.S.O. Mota: Federal Institute of Education Science and Technology of Acre Estrada da APADEQ, Nova Olinda, 1.192, 69.980-000São Paulo State Univ. (UNESP) Center of Tropical Roots and Starches (CERAT) Av. Universitária, 3780, Lageado Experimental Farm, 18610-034Current address of H.M.F. Leite: Federal University of Acre Estrada da Canela Fina, Km 12 Gleba Formoso, 69980-000São Paulo State Univ. (UNESP) College of Agricultural Sciences Av. Universitária, 3780, Lageado Experimental Farm, 18610-034São Paulo State Univ. (UNESP) Center of Tropical Roots and Starches (CERAT) Av. Universitária, 3780, Lageado Experimental Farm, 18610-034Universidade Estadual Paulista (Unesp)Estrada da APADEQEstrada da Canela FinaMota, Lydia Helena S.O. [UNESP]Fernandes, Adalton M. [UNESP]Assunção, Natália S. [UNESP]Leite, Hugo M.F. [UNESP]2020-12-12T01:58:02Z2020-12-12T01:58:02Z2020-03-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1406-1422http://dx.doi.org/10.1002/agj2.20113Agronomy Journal, v. 112, n. 2, p. 1406-1422, 2020.1435-06450002-1962http://hdl.handle.net/11449/20011210.1002/agj2.201132-s2.0-85080854266Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengAgronomy Journalinfo:eu-repo/semantics/openAccess2024-04-12T13:49:51Zoai:repositorio.unesp.br:11449/200112Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T22:08:36.415811Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Leaf area development and yield of cassava in response to pruning of shoots and the late supply of nitrogen and potassium |
title |
Leaf area development and yield of cassava in response to pruning of shoots and the late supply of nitrogen and potassium |
spellingShingle |
Leaf area development and yield of cassava in response to pruning of shoots and the late supply of nitrogen and potassium Mota, Lydia Helena S.O. [UNESP] |
title_short |
Leaf area development and yield of cassava in response to pruning of shoots and the late supply of nitrogen and potassium |
title_full |
Leaf area development and yield of cassava in response to pruning of shoots and the late supply of nitrogen and potassium |
title_fullStr |
Leaf area development and yield of cassava in response to pruning of shoots and the late supply of nitrogen and potassium |
title_full_unstemmed |
Leaf area development and yield of cassava in response to pruning of shoots and the late supply of nitrogen and potassium |
title_sort |
Leaf area development and yield of cassava in response to pruning of shoots and the late supply of nitrogen and potassium |
author |
Mota, Lydia Helena S.O. [UNESP] |
author_facet |
Mota, Lydia Helena S.O. [UNESP] Fernandes, Adalton M. [UNESP] Assunção, Natália S. [UNESP] Leite, Hugo M.F. [UNESP] |
author_role |
author |
author2 |
Fernandes, Adalton M. [UNESP] Assunção, Natália S. [UNESP] Leite, Hugo M.F. [UNESP] |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Estrada da APADEQ Estrada da Canela Fina |
dc.contributor.author.fl_str_mv |
Mota, Lydia Helena S.O. [UNESP] Fernandes, Adalton M. [UNESP] Assunção, Natália S. [UNESP] Leite, Hugo M.F. [UNESP] |
description |
This study evaluated leaf area development, leaf nutritional content, and yield of pruned/unpruned cassava supplied with nitrogen (N) and potassium (K) during its second vegetative cycle. Two field experiments were conducted in a randomized complete-block design with split-plots and four replications. The treatments consisted of four management approaches that combined pruning/not pruning with or without K as the main plot and four N application rates (0, 50, 100, and 200 kg ha−1 N) as the subplots. The results revealed that an evaluation of the nutritional status of cassava during its second vegetative cycle should be considered if shoot pruning has been conducted because pruned plants had higher concentrations of N, P, and K in their leaves, and unpruned plants exhibited leaves with higher Ca, Fe, and Mn concentrations. Pruning of cassava shoots during the autumn/winter resting phase did not negatively affect root yield and may represent a recommended management practice for cassava cultivation. In soils with a medium level of K availability, K provision during the second cassava growth cycle is unnecessary because the application of K did not increase leaf reconstitution or yield components in either pruned or unpruned plants. The late application of N improved the nutritional status of cassava plants and increased their leaf area during the second growth cycle. Cassava root, starch, and flour yields increased in a linear fashion in response to the late application of N. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-12-12T01:58:02Z 2020-12-12T01:58:02Z 2020-03-01 |
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/10.1002/agj2.20113 Agronomy Journal, v. 112, n. 2, p. 1406-1422, 2020. 1435-0645 0002-1962 http://hdl.handle.net/11449/200112 10.1002/agj2.20113 2-s2.0-85080854266 |
url |
http://dx.doi.org/10.1002/agj2.20113 http://hdl.handle.net/11449/200112 |
identifier_str_mv |
Agronomy Journal, v. 112, n. 2, p. 1406-1422, 2020. 1435-0645 0002-1962 10.1002/agj2.20113 2-s2.0-85080854266 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Agronomy Journal |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
1406-1422 |
dc.source.none.fl_str_mv |
Scopus 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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1808129396823818240 |