Short-term effect of sugarcane straw on soil organic carbon pools.
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
Texto Completo: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/1098572 |
Resumo: | This study aimed to evaluate the short-term effect of sugarcane straw on soil organic carbon (SOC) stocks in tropical soils. The treatments simulated the maintenance of different rates of sugarcane straw (0, 2.2, 5.1, 7.8 and 12 t ha-1) applied on the soil surface, with four replication, and evaluated chemical and biological attributes in four depths (0-0.05; 0.05-0.10; 0.10-0.20; 0.20-0.40 m). Results from soil samples collected in the rainy and dry seasons showed evidence of positive short-term effects of green harvest either on labile and humified soil organic matter (SOM) pools. For the total SOC stocks, we observed linear responses with straw rates in both sampling seasons. A decreased humification index in the topsoil suggests more labile C pools available in the soil, resulting in a significant increase in microbial activity. Microbial indicators point towards a steady equilibrium in SOC turnover, which can lead to future lower increases in SOC stocks if high straw amounts are maintained on the soil surface. Therefore, long-term studies under low-latitude areas are necessary to model the potential of C sequestration in sugarcane green harvest systems. |
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Short-term effect of sugarcane straw on soil organic carbon pools.Cana de AçúcarSolo TropicalCobertura do SoloThis study aimed to evaluate the short-term effect of sugarcane straw on soil organic carbon (SOC) stocks in tropical soils. The treatments simulated the maintenance of different rates of sugarcane straw (0, 2.2, 5.1, 7.8 and 12 t ha-1) applied on the soil surface, with four replication, and evaluated chemical and biological attributes in four depths (0-0.05; 0.05-0.10; 0.10-0.20; 0.20-0.40 m). Results from soil samples collected in the rainy and dry seasons showed evidence of positive short-term effects of green harvest either on labile and humified soil organic matter (SOM) pools. For the total SOC stocks, we observed linear responses with straw rates in both sampling seasons. A decreased humification index in the topsoil suggests more labile C pools available in the soil, resulting in a significant increase in microbial activity. Microbial indicators point towards a steady equilibrium in SOC turnover, which can lead to future lower increases in SOC stocks if high straw amounts are maintained on the soil surface. Therefore, long-term studies under low-latitude areas are necessary to model the potential of C sequestration in sugarcane green harvest systems.LUIZ FERNANDO CARVALHO LEITE, CPAMN; EDVALDO SAGRILO, CPAMN; ADEMIR SERGIO F. DE ARAÚJO, UFPI; HENRIQUE ANTUNES DE SOUZA, CPAMN.LEITE, L. F. C.SAGRILO, E.ARAÚJO, A. S. F. deSOUZA, H. A. de2018-11-01T00:55:51Z2018-11-01T00:55:51Z2018-10-3120182018-11-01T00:55:51Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleJournal of Agricultural Science, v. 10, n. 8, p. 405-416, 2018.http://www.alice.cnptia.embrapa.br/alice/handle/doc/1098572enginfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPA2018-11-01T00:55:57Zoai:www.alice.cnptia.embrapa.br:doc/1098572Repositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestopendoar:21542018-11-01T00:55:57falseRepositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestcg-riaa@embrapa.bropendoar:21542018-11-01T00:55:57Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Short-term effect of sugarcane straw on soil organic carbon pools. |
title |
Short-term effect of sugarcane straw on soil organic carbon pools. |
spellingShingle |
Short-term effect of sugarcane straw on soil organic carbon pools. LEITE, L. F. C. Cana de Açúcar Solo Tropical Cobertura do Solo |
title_short |
Short-term effect of sugarcane straw on soil organic carbon pools. |
title_full |
Short-term effect of sugarcane straw on soil organic carbon pools. |
title_fullStr |
Short-term effect of sugarcane straw on soil organic carbon pools. |
title_full_unstemmed |
Short-term effect of sugarcane straw on soil organic carbon pools. |
title_sort |
Short-term effect of sugarcane straw on soil organic carbon pools. |
author |
LEITE, L. F. C. |
author_facet |
LEITE, L. F. C. SAGRILO, E. ARAÚJO, A. S. F. de SOUZA, H. A. de |
author_role |
author |
author2 |
SAGRILO, E. ARAÚJO, A. S. F. de SOUZA, H. A. de |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
LUIZ FERNANDO CARVALHO LEITE, CPAMN; EDVALDO SAGRILO, CPAMN; ADEMIR SERGIO F. DE ARAÚJO, UFPI; HENRIQUE ANTUNES DE SOUZA, CPAMN. |
dc.contributor.author.fl_str_mv |
LEITE, L. F. C. SAGRILO, E. ARAÚJO, A. S. F. de SOUZA, H. A. de |
dc.subject.por.fl_str_mv |
Cana de Açúcar Solo Tropical Cobertura do Solo |
topic |
Cana de Açúcar Solo Tropical Cobertura do Solo |
description |
This study aimed to evaluate the short-term effect of sugarcane straw on soil organic carbon (SOC) stocks in tropical soils. The treatments simulated the maintenance of different rates of sugarcane straw (0, 2.2, 5.1, 7.8 and 12 t ha-1) applied on the soil surface, with four replication, and evaluated chemical and biological attributes in four depths (0-0.05; 0.05-0.10; 0.10-0.20; 0.20-0.40 m). Results from soil samples collected in the rainy and dry seasons showed evidence of positive short-term effects of green harvest either on labile and humified soil organic matter (SOM) pools. For the total SOC stocks, we observed linear responses with straw rates in both sampling seasons. A decreased humification index in the topsoil suggests more labile C pools available in the soil, resulting in a significant increase in microbial activity. Microbial indicators point towards a steady equilibrium in SOC turnover, which can lead to future lower increases in SOC stocks if high straw amounts are maintained on the soil surface. Therefore, long-term studies under low-latitude areas are necessary to model the potential of C sequestration in sugarcane green harvest systems. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-11-01T00:55:51Z 2018-11-01T00:55:51Z 2018-10-31 2018 2018-11-01T00:55:51Z |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
Journal of Agricultural Science, v. 10, n. 8, p. 405-416, 2018. http://www.alice.cnptia.embrapa.br/alice/handle/doc/1098572 |
identifier_str_mv |
Journal of Agricultural Science, v. 10, n. 8, p. 405-416, 2018. |
url |
http://www.alice.cnptia.embrapa.br/alice/handle/doc/1098572 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
collection |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
repository.name.fl_str_mv |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
cg-riaa@embrapa.br |
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1794503464613576704 |