Impact of sugarcane trash on fertilizer requirements for São Paulo, Brazil
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Scientia Agrícola (Online) |
Texto Completo: | https://www.revistas.usp.br/sa/article/view/78516 |
Resumo: | The area under mechanized sugarcane (Saccharum spp.) harvesting is expanding in Brazil, increasing the return of trash to the soil. The main questions regarding this management are: (i) after adopting unburned mechanical harvesting, how long will it take to observe decreases in fertilizer requirements, (ii) what will be the magnitude of this decrease and, (iii) the impact in the short run of removing trash for energy purposes in the nutrient cycling? This study aimed to build an N prediction model for long term assessment of the contribution of sugarcane crop residues to sugarcane nutrition and to evaluate the cycling of other nutrients derived from crop residues. Keeping crop residues over the soil will increase soil N stock and N recovery by sugarcane, reaching equilibrium after 40 years with recovery of approximately 40 kg ha-1 year-1 of N. Removing trash for energy production will decrease the potential reduction in N fertilizer requirement. Of the total nutrients in the trash, 75 % of the K2O (81 kg ha-1 year-1) and 50 % of the N (31 kg ha-1 year-1) are in the tops, indicating the importance of maintaining tops in the soil to sustain soil fertility. Because the input data employed in the simulations are representative of the conditions in Southeast Brazil, these results might not be definitive for situations not represented in the experiments used in the study, but the model produced is useful to forecast changes that occur in the soil under different trash management. |
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Impact of sugarcane trash on fertilizer requirements for São Paulo, Brazil The area under mechanized sugarcane (Saccharum spp.) harvesting is expanding in Brazil, increasing the return of trash to the soil. The main questions regarding this management are: (i) after adopting unburned mechanical harvesting, how long will it take to observe decreases in fertilizer requirements, (ii) what will be the magnitude of this decrease and, (iii) the impact in the short run of removing trash for energy purposes in the nutrient cycling? This study aimed to build an N prediction model for long term assessment of the contribution of sugarcane crop residues to sugarcane nutrition and to evaluate the cycling of other nutrients derived from crop residues. Keeping crop residues over the soil will increase soil N stock and N recovery by sugarcane, reaching equilibrium after 40 years with recovery of approximately 40 kg ha-1 year-1 of N. Removing trash for energy production will decrease the potential reduction in N fertilizer requirement. Of the total nutrients in the trash, 75 % of the K2O (81 kg ha-1 year-1) and 50 % of the N (31 kg ha-1 year-1) are in the tops, indicating the importance of maintaining tops in the soil to sustain soil fertility. Because the input data employed in the simulations are representative of the conditions in Southeast Brazil, these results might not be definitive for situations not represented in the experiments used in the study, but the model produced is useful to forecast changes that occur in the soil under different trash management. Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz2013-10-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://www.revistas.usp.br/sa/article/view/7851610.1590/S0103-90162013000500009Scientia Agricola; v. 70 n. 5 (2013); 345-352Scientia Agricola; Vol. 70 Núm. 5 (2013); 345-352Scientia Agricola; Vol. 70 No. 5 (2013); 345-3521678-992X0103-9016reponame:Scientia Agrícola (Online)instname:Universidade de São Paulo (USP)instacron:USPenghttps://www.revistas.usp.br/sa/article/view/78516/82571Copyright (c) 2015 Scientia Agricolainfo:eu-repo/semantics/openAccessTrivelin, Paulo Cesar OcheuzeFranco, Henrique Coutinho JunqueiraOtto, RafaelFerreira, Danilo A.Vitti, André CesarFortes, CaioFaroni, Carlos E.Oliveira, Emidio C. A.Cantarella, Heitor2014-04-02T19:49:28Zoai:revistas.usp.br:article/78516Revistahttp://revistas.usp.br/sa/indexPUBhttps://old.scielo.br/oai/scielo-oai.phpscientia@usp.br||alleoni@usp.br1678-992X0103-9016opendoar:2014-04-02T19:49:28Scientia Agrícola (Online) - Universidade de São Paulo (USP)false |
dc.title.none.fl_str_mv |
Impact of sugarcane trash on fertilizer requirements for São Paulo, Brazil |
title |
Impact of sugarcane trash on fertilizer requirements for São Paulo, Brazil |
spellingShingle |
Impact of sugarcane trash on fertilizer requirements for São Paulo, Brazil Trivelin, Paulo Cesar Ocheuze |
title_short |
Impact of sugarcane trash on fertilizer requirements for São Paulo, Brazil |
title_full |
Impact of sugarcane trash on fertilizer requirements for São Paulo, Brazil |
title_fullStr |
Impact of sugarcane trash on fertilizer requirements for São Paulo, Brazil |
title_full_unstemmed |
Impact of sugarcane trash on fertilizer requirements for São Paulo, Brazil |
title_sort |
Impact of sugarcane trash on fertilizer requirements for São Paulo, Brazil |
author |
Trivelin, Paulo Cesar Ocheuze |
author_facet |
Trivelin, Paulo Cesar Ocheuze Franco, Henrique Coutinho Junqueira Otto, Rafael Ferreira, Danilo A. Vitti, André Cesar Fortes, Caio Faroni, Carlos E. Oliveira, Emidio C. A. Cantarella, Heitor |
author_role |
author |
author2 |
Franco, Henrique Coutinho Junqueira Otto, Rafael Ferreira, Danilo A. Vitti, André Cesar Fortes, Caio Faroni, Carlos E. Oliveira, Emidio C. A. Cantarella, Heitor |
author2_role |
author author author author author author author author |
dc.contributor.author.fl_str_mv |
Trivelin, Paulo Cesar Ocheuze Franco, Henrique Coutinho Junqueira Otto, Rafael Ferreira, Danilo A. Vitti, André Cesar Fortes, Caio Faroni, Carlos E. Oliveira, Emidio C. A. Cantarella, Heitor |
description |
The area under mechanized sugarcane (Saccharum spp.) harvesting is expanding in Brazil, increasing the return of trash to the soil. The main questions regarding this management are: (i) after adopting unburned mechanical harvesting, how long will it take to observe decreases in fertilizer requirements, (ii) what will be the magnitude of this decrease and, (iii) the impact in the short run of removing trash for energy purposes in the nutrient cycling? This study aimed to build an N prediction model for long term assessment of the contribution of sugarcane crop residues to sugarcane nutrition and to evaluate the cycling of other nutrients derived from crop residues. Keeping crop residues over the soil will increase soil N stock and N recovery by sugarcane, reaching equilibrium after 40 years with recovery of approximately 40 kg ha-1 year-1 of N. Removing trash for energy production will decrease the potential reduction in N fertilizer requirement. Of the total nutrients in the trash, 75 % of the K2O (81 kg ha-1 year-1) and 50 % of the N (31 kg ha-1 year-1) are in the tops, indicating the importance of maintaining tops in the soil to sustain soil fertility. Because the input data employed in the simulations are representative of the conditions in Southeast Brazil, these results might not be definitive for situations not represented in the experiments used in the study, but the model produced is useful to forecast changes that occur in the soil under different trash management. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-10-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://www.revistas.usp.br/sa/article/view/78516 10.1590/S0103-90162013000500009 |
url |
https://www.revistas.usp.br/sa/article/view/78516 |
identifier_str_mv |
10.1590/S0103-90162013000500009 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://www.revistas.usp.br/sa/article/view/78516/82571 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2015 Scientia Agricola info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2015 Scientia Agricola |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz |
publisher.none.fl_str_mv |
Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz |
dc.source.none.fl_str_mv |
Scientia Agricola; v. 70 n. 5 (2013); 345-352 Scientia Agricola; Vol. 70 Núm. 5 (2013); 345-352 Scientia Agricola; Vol. 70 No. 5 (2013); 345-352 1678-992X 0103-9016 reponame:Scientia Agrícola (Online) instname:Universidade de São Paulo (USP) instacron:USP |
instname_str |
Universidade de São Paulo (USP) |
instacron_str |
USP |
institution |
USP |
reponame_str |
Scientia Agrícola (Online) |
collection |
Scientia Agrícola (Online) |
repository.name.fl_str_mv |
Scientia Agrícola (Online) - Universidade de São Paulo (USP) |
repository.mail.fl_str_mv |
scientia@usp.br||alleoni@usp.br |
_version_ |
1800222791994179584 |