Potassium management effects on yield and quality of cassava varieties in tropical sandy soils

Detalhes bibliográficos
Autor(a) principal: Gazola, Bruno [UNESP]
Data de Publicação: 2022
Outros Autores: Fernandes, Adalton M. [UNESP], Hellmeister, Gabriela [UNESP], Abrami, Laura S. [UNESP], Silva, Rudieli M. [UNESP], Soratto, Rogério P. [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1071/CP21229
http://hdl.handle.net/11449/230539
Resumo: Potassium (K) fertilisation at planting time may not be sufficient to achieve high cassava yields. Experiments were conducted over two growing periods using sweet cassava (SC) variety IAC 576-70 and bitter cassava (BC) variety IAC 13 aiming to evaluate the effects of K fertilisation rate (0-150 kg K/ha) and timing of application (one, two, or three) on leaf K concentration, yield components, and storage-root and starch yields. The SC and BC varieties were grown in a randomized block design in a 3 × 4 + 1 factorial scheme with four replications during growing periods of 10 and 20 months respectively. For SC, split application of K at planting plus 3 months after planting (MP) or at planting plus 1.5 and 3 MP was more effective at increasing the marketable root yield, with greater rainfall at the beginning of the growing period. Split application of K at planting plus 3 MP also reduced the cooking time and cooked root firmness. For BC, split application of K at planting plus 12 MP more effectively increased the storage-root and starch yields; however, root yield response to K fertilisation in the second growing period, with greater rain intensity during the initial crop stages, was greater than in the first growing period. In K-deficient soils, the optimal K application rate for SC marketable root yield varied from 79 to 111 kg/ha when K was applied after 1.5 MP, and linear responses to K application rate occurred when K was applied earlier. For BC, the optimal K application rate varied from 75 to 92 kg K/ha. Our data suggest that K application times should be different for cassava varieties with short and long growing periods.
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spelling Potassium management effects on yield and quality of cassava varieties in tropical sandy soilscooked root firmnesscooking timeK application timingK fertilisation rateManihot esculentanutritional statusstarch yieldstorage root yieldPotassium (K) fertilisation at planting time may not be sufficient to achieve high cassava yields. Experiments were conducted over two growing periods using sweet cassava (SC) variety IAC 576-70 and bitter cassava (BC) variety IAC 13 aiming to evaluate the effects of K fertilisation rate (0-150 kg K/ha) and timing of application (one, two, or three) on leaf K concentration, yield components, and storage-root and starch yields. The SC and BC varieties were grown in a randomized block design in a 3 × 4 + 1 factorial scheme with four replications during growing periods of 10 and 20 months respectively. For SC, split application of K at planting plus 3 months after planting (MP) or at planting plus 1.5 and 3 MP was more effective at increasing the marketable root yield, with greater rainfall at the beginning of the growing period. Split application of K at planting plus 3 MP also reduced the cooking time and cooked root firmness. For BC, split application of K at planting plus 12 MP more effectively increased the storage-root and starch yields; however, root yield response to K fertilisation in the second growing period, with greater rain intensity during the initial crop stages, was greater than in the first growing period. In K-deficient soils, the optimal K application rate for SC marketable root yield varied from 79 to 111 kg/ha when K was applied after 1.5 MP, and linear responses to K application rate occurred when K was applied earlier. For BC, the optimal K application rate varied from 75 to 92 kg K/ha. Our data suggest that K application times should be different for cassava varieties with short and long growing periods.São Paulo State University (UNESP) College of Agricultural Sciences Avenida Universitária, 3780, Lageado Experimental Farm, São PauloUNESP Center of Tropical Roots and Starches (CERAT) Avenida Universitária, 3780, Lageado Experimental Farm, São PauloSão Paulo State University (UNESP) College of Agricultural Sciences Avenida Universitária, 3780, Lageado Experimental Farm, São PauloUNESP Center of Tropical Roots and Starches (CERAT) Avenida Universitária, 3780, Lageado Experimental Farm, São PauloUniversidade Estadual Paulista (UNESP)Gazola, Bruno [UNESP]Fernandes, Adalton M. [UNESP]Hellmeister, Gabriela [UNESP]Abrami, Laura S. [UNESP]Silva, Rudieli M. [UNESP]Soratto, Rogério P. [UNESP]2022-04-29T08:40:41Z2022-04-29T08:40:41Z2022-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1071/CP21229Crop and Pasture Science.1836-57951836-0947http://hdl.handle.net/11449/23053910.1071/CP212292-s2.0-85126005266Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengCrop and Pasture Scienceinfo:eu-repo/semantics/openAccess2024-04-12T13:49:51Zoai:repositorio.unesp.br:11449/230539Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T21:53:23.941457Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Potassium management effects on yield and quality of cassava varieties in tropical sandy soils
title Potassium management effects on yield and quality of cassava varieties in tropical sandy soils
spellingShingle Potassium management effects on yield and quality of cassava varieties in tropical sandy soils
Gazola, Bruno [UNESP]
cooked root firmness
cooking time
K application timing
K fertilisation rate
Manihot esculenta
nutritional status
starch yield
storage root yield
title_short Potassium management effects on yield and quality of cassava varieties in tropical sandy soils
title_full Potassium management effects on yield and quality of cassava varieties in tropical sandy soils
title_fullStr Potassium management effects on yield and quality of cassava varieties in tropical sandy soils
title_full_unstemmed Potassium management effects on yield and quality of cassava varieties in tropical sandy soils
title_sort Potassium management effects on yield and quality of cassava varieties in tropical sandy soils
author Gazola, Bruno [UNESP]
author_facet Gazola, Bruno [UNESP]
Fernandes, Adalton M. [UNESP]
Hellmeister, Gabriela [UNESP]
Abrami, Laura S. [UNESP]
Silva, Rudieli M. [UNESP]
Soratto, Rogério P. [UNESP]
author_role author
author2 Fernandes, Adalton M. [UNESP]
Hellmeister, Gabriela [UNESP]
Abrami, Laura S. [UNESP]
Silva, Rudieli M. [UNESP]
Soratto, Rogério P. [UNESP]
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (UNESP)
dc.contributor.author.fl_str_mv Gazola, Bruno [UNESP]
Fernandes, Adalton M. [UNESP]
Hellmeister, Gabriela [UNESP]
Abrami, Laura S. [UNESP]
Silva, Rudieli M. [UNESP]
Soratto, Rogério P. [UNESP]
dc.subject.por.fl_str_mv cooked root firmness
cooking time
K application timing
K fertilisation rate
Manihot esculenta
nutritional status
starch yield
storage root yield
topic cooked root firmness
cooking time
K application timing
K fertilisation rate
Manihot esculenta
nutritional status
starch yield
storage root yield
description Potassium (K) fertilisation at planting time may not be sufficient to achieve high cassava yields. Experiments were conducted over two growing periods using sweet cassava (SC) variety IAC 576-70 and bitter cassava (BC) variety IAC 13 aiming to evaluate the effects of K fertilisation rate (0-150 kg K/ha) and timing of application (one, two, or three) on leaf K concentration, yield components, and storage-root and starch yields. The SC and BC varieties were grown in a randomized block design in a 3 × 4 + 1 factorial scheme with four replications during growing periods of 10 and 20 months respectively. For SC, split application of K at planting plus 3 months after planting (MP) or at planting plus 1.5 and 3 MP was more effective at increasing the marketable root yield, with greater rainfall at the beginning of the growing period. Split application of K at planting plus 3 MP also reduced the cooking time and cooked root firmness. For BC, split application of K at planting plus 12 MP more effectively increased the storage-root and starch yields; however, root yield response to K fertilisation in the second growing period, with greater rain intensity during the initial crop stages, was greater than in the first growing period. In K-deficient soils, the optimal K application rate for SC marketable root yield varied from 79 to 111 kg/ha when K was applied after 1.5 MP, and linear responses to K application rate occurred when K was applied earlier. For BC, the optimal K application rate varied from 75 to 92 kg K/ha. Our data suggest that K application times should be different for cassava varieties with short and long growing periods.
publishDate 2022
dc.date.none.fl_str_mv 2022-04-29T08:40:41Z
2022-04-29T08:40:41Z
2022-01-01
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/10.1071/CP21229
Crop and Pasture Science.
1836-5795
1836-0947
http://hdl.handle.net/11449/230539
10.1071/CP21229
2-s2.0-85126005266
url http://dx.doi.org/10.1071/CP21229
http://hdl.handle.net/11449/230539
identifier_str_mv Crop and Pasture Science.
1836-5795
1836-0947
10.1071/CP21229
2-s2.0-85126005266
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Crop and Pasture Science
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
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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