Optimization of Leaf Nitrogen Concentration and Monitoring Time for Sustainable Potato Production in Tropics
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1007/s42729-022-00843-7 http://hdl.handle.net/11449/230685 |
Resumo: | Crop nitrogen (N) status monitoring is required as a decision-making tool to optimize N management of current potato cultivars (Solanum tuberosum L.). Field experiments were conducted to assess the leaf N concentration (LNC) as a diagnostic tool of the N status of potatoes grown in tropical environments of southeastern Brazil. Treatments consisted of two cultivars (Agata and Electra) and five N managements, which varied in rates (0–320 kg N ha−1) and application timings. The LNC was monitored in the most recently matured leaves from 10 to 59 days after emergence (DAE). Total dry matter (DM) biomass and N uptake at vine killing (~ 85 DAE) and fresh tuber yield were also measured. High variation was observed in total DM biomass (3.53–9.75 Mg ha−1), N uptake (41–224 kg ha−1), and tuber yield (14–61 Mg ha−1), with most of the variations ascribed to N management (60–90%). High variation in LNC (68.0–30.8 g kg−1) was attributed to N management and leaf sampling date. Relative tuber yields were positively related to the LNC values across the potato cycle. The threshold value of LNC to reach 95% of maximum tuber yield linearly decreased from 17 to 59 DAE (i.e., from 283 to 999 cumulative growing degree days after emergence) in both potato cultivars. The reference values of LNC to ensure N sufficiency varied from 63.8 g kg−1 (17 DAE) to 52.6 g kg−1 (59 DAE). These outcomes can guide growers to adjust the supply of N according to potato N requirements up to mid-season, preventing the application of excess N fertilizer. |
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Optimization of Leaf Nitrogen Concentration and Monitoring Time for Sustainable Potato Production in TropicsDecision-making toolMineral nutritionN managementN statusSolanum tuberosumCrop nitrogen (N) status monitoring is required as a decision-making tool to optimize N management of current potato cultivars (Solanum tuberosum L.). Field experiments were conducted to assess the leaf N concentration (LNC) as a diagnostic tool of the N status of potatoes grown in tropical environments of southeastern Brazil. Treatments consisted of two cultivars (Agata and Electra) and five N managements, which varied in rates (0–320 kg N ha−1) and application timings. The LNC was monitored in the most recently matured leaves from 10 to 59 days after emergence (DAE). Total dry matter (DM) biomass and N uptake at vine killing (~ 85 DAE) and fresh tuber yield were also measured. High variation was observed in total DM biomass (3.53–9.75 Mg ha−1), N uptake (41–224 kg ha−1), and tuber yield (14–61 Mg ha−1), with most of the variations ascribed to N management (60–90%). High variation in LNC (68.0–30.8 g kg−1) was attributed to N management and leaf sampling date. Relative tuber yields were positively related to the LNC values across the potato cycle. The threshold value of LNC to reach 95% of maximum tuber yield linearly decreased from 17 to 59 DAE (i.e., from 283 to 999 cumulative growing degree days after emergence) in both potato cultivars. The reference values of LNC to ensure N sufficiency varied from 63.8 g kg−1 (17 DAE) to 52.6 g kg−1 (59 DAE). These outcomes can guide growers to adjust the supply of N according to potato N requirements up to mid-season, preventing the application of excess N fertilizer.Department of Crop Science College of Agricultural Sciences São Paulo State University (UNESP), Av. Universitária, 3780, SPCenter of Tropical Roots and Starches São Paulo State University (UNESP), SPInstitute of Plant Production and Protection Universidad Austral de Chile, Campus Isla TejaDepartment of Soil Water and Climate University of MinnesotaRural Development Institute of Paraná - IAPAR-EMATER (IDR-Paraná), PRDepartment of Crop Science College of Agricultural Sciences São Paulo State University (UNESP), Av. Universitária, 3780, SPCenter of Tropical Roots and Starches São Paulo State University (UNESP), SPUniversidade Estadual Paulista (UNESP)Universidad Austral de ChileUniversity of MinnesotaRural Development Institute of Paraná - IAPAR-EMATER (IDR-Paraná)Fernandes, Fabiana M. [UNESP]Soratto, Rogério P. [UNESP]Sandaña, PatricioSouza, Emerson F. C.Yagi, Renato2022-04-29T08:41:30Z2022-04-29T08:41:30Z2022-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1007/s42729-022-00843-7Journal of Soil Science and Plant Nutrition.0718-95160718-9508http://hdl.handle.net/11449/23068510.1007/s42729-022-00843-72-s2.0-85127702625Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Soil Science and Plant Nutritioninfo:eu-repo/semantics/openAccess2024-04-12T13:49:39Zoai:repositorio.unesp.br:11449/230685Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T13:35:05.655928Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Optimization of Leaf Nitrogen Concentration and Monitoring Time for Sustainable Potato Production in Tropics |
title |
Optimization of Leaf Nitrogen Concentration and Monitoring Time for Sustainable Potato Production in Tropics |
spellingShingle |
Optimization of Leaf Nitrogen Concentration and Monitoring Time for Sustainable Potato Production in Tropics Fernandes, Fabiana M. [UNESP] Decision-making tool Mineral nutrition N management N status Solanum tuberosum |
title_short |
Optimization of Leaf Nitrogen Concentration and Monitoring Time for Sustainable Potato Production in Tropics |
title_full |
Optimization of Leaf Nitrogen Concentration and Monitoring Time for Sustainable Potato Production in Tropics |
title_fullStr |
Optimization of Leaf Nitrogen Concentration and Monitoring Time for Sustainable Potato Production in Tropics |
title_full_unstemmed |
Optimization of Leaf Nitrogen Concentration and Monitoring Time for Sustainable Potato Production in Tropics |
title_sort |
Optimization of Leaf Nitrogen Concentration and Monitoring Time for Sustainable Potato Production in Tropics |
author |
Fernandes, Fabiana M. [UNESP] |
author_facet |
Fernandes, Fabiana M. [UNESP] Soratto, Rogério P. [UNESP] Sandaña, Patricio Souza, Emerson F. C. Yagi, Renato |
author_role |
author |
author2 |
Soratto, Rogério P. [UNESP] Sandaña, Patricio Souza, Emerson F. C. Yagi, Renato |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) Universidad Austral de Chile University of Minnesota Rural Development Institute of Paraná - IAPAR-EMATER (IDR-Paraná) |
dc.contributor.author.fl_str_mv |
Fernandes, Fabiana M. [UNESP] Soratto, Rogério P. [UNESP] Sandaña, Patricio Souza, Emerson F. C. Yagi, Renato |
dc.subject.por.fl_str_mv |
Decision-making tool Mineral nutrition N management N status Solanum tuberosum |
topic |
Decision-making tool Mineral nutrition N management N status Solanum tuberosum |
description |
Crop nitrogen (N) status monitoring is required as a decision-making tool to optimize N management of current potato cultivars (Solanum tuberosum L.). Field experiments were conducted to assess the leaf N concentration (LNC) as a diagnostic tool of the N status of potatoes grown in tropical environments of southeastern Brazil. Treatments consisted of two cultivars (Agata and Electra) and five N managements, which varied in rates (0–320 kg N ha−1) and application timings. The LNC was monitored in the most recently matured leaves from 10 to 59 days after emergence (DAE). Total dry matter (DM) biomass and N uptake at vine killing (~ 85 DAE) and fresh tuber yield were also measured. High variation was observed in total DM biomass (3.53–9.75 Mg ha−1), N uptake (41–224 kg ha−1), and tuber yield (14–61 Mg ha−1), with most of the variations ascribed to N management (60–90%). High variation in LNC (68.0–30.8 g kg−1) was attributed to N management and leaf sampling date. Relative tuber yields were positively related to the LNC values across the potato cycle. The threshold value of LNC to reach 95% of maximum tuber yield linearly decreased from 17 to 59 DAE (i.e., from 283 to 999 cumulative growing degree days after emergence) in both potato cultivars. The reference values of LNC to ensure N sufficiency varied from 63.8 g kg−1 (17 DAE) to 52.6 g kg−1 (59 DAE). These outcomes can guide growers to adjust the supply of N according to potato N requirements up to mid-season, preventing the application of excess N fertilizer. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-04-29T08:41:30Z 2022-04-29T08:41:30Z 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/10.1007/s42729-022-00843-7 Journal of Soil Science and Plant Nutrition. 0718-9516 0718-9508 http://hdl.handle.net/11449/230685 10.1007/s42729-022-00843-7 2-s2.0-85127702625 |
url |
http://dx.doi.org/10.1007/s42729-022-00843-7 http://hdl.handle.net/11449/230685 |
identifier_str_mv |
Journal of Soil Science and Plant Nutrition. 0718-9516 0718-9508 10.1007/s42729-022-00843-7 2-s2.0-85127702625 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal of Soil Science and Plant Nutrition |
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 |
|
_version_ |
1808128250335985664 |