Soil inorganic nitrogen content according to cover crops, nitrogen sources and nitrification inhibitor
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Pesquisa Agropecuária Tropical (Online) |
Texto Completo: | https://revistas.ufg.br/pat/article/view/22907 |
Resumo: | The use of cover crops can change the soil NO3-: NH4+ ratio, providing larger amounts of NH4+, and enable the development of crops which absorb more or prefer this form of nitrogen (N), like rice. This study aimed at evaluating the effect of the interaction of cover crops and N sources, with and without nitrification inhibitor (dicyandiamide), under no-tillage system (NTS). The experiment was carried out in 2009/2010, in Botucatu, São Paulo State, Brazil, in an Oxisol under NTS for six years. The experimental design was randomized blocks, arranged in a split plot, with four replications. The plots consisted of six cover crops species (Urochloa brizantha, U. decumbens, U. humidicola, U. ruziziensis, Pennisetum americanum and Crotalaria spectabilis) and the split plots were seven forms of nitrogen fertilization, at 0 and 30 days after the emergence (DAE) of rice [1 - control, without N fertilization; 2 - calcium nitrate (40 + 40 kg ha-1); 3 - calcium nitrate (0 + 80 kg ha-1); 4 - ammonium sulfate (40 + 40 kgha-1); 5 - ammonium sulfate (0 + 80 kg ha-1); 6 - ammonium sulfate + dicyandiamide (40 + 40 kg ha-1); and 7 - ammonium sulfate + dicyandiamide (0 + 80 kg ha-1)]. The use of nitrification inhibitor and the C. spectabilis cover crop resulted in higher levels of ammonium in the soil. The application of the ammonium source without nitrification inhibitor in a total dose at 30 DAE and with inhibitor (split or total dose) resulted in the highest levels of nitrate in the soil. |
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Soil inorganic nitrogen content according to cover crops, nitrogen sources and nitrification inhibitorTeor de nitrogênio inorgânico no solo em função de plantas de cobertura, fontes de nitrogênio e inibidor de nitrificaçãoUrochloa spp.no-tillage systemleaching.Urochloa spp.sistema plantio diretolixiviação.The use of cover crops can change the soil NO3-: NH4+ ratio, providing larger amounts of NH4+, and enable the development of crops which absorb more or prefer this form of nitrogen (N), like rice. This study aimed at evaluating the effect of the interaction of cover crops and N sources, with and without nitrification inhibitor (dicyandiamide), under no-tillage system (NTS). The experiment was carried out in 2009/2010, in Botucatu, São Paulo State, Brazil, in an Oxisol under NTS for six years. The experimental design was randomized blocks, arranged in a split plot, with four replications. The plots consisted of six cover crops species (Urochloa brizantha, U. decumbens, U. humidicola, U. ruziziensis, Pennisetum americanum and Crotalaria spectabilis) and the split plots were seven forms of nitrogen fertilization, at 0 and 30 days after the emergence (DAE) of rice [1 - control, without N fertilization; 2 - calcium nitrate (40 + 40 kg ha-1); 3 - calcium nitrate (0 + 80 kg ha-1); 4 - ammonium sulfate (40 + 40 kgha-1); 5 - ammonium sulfate (0 + 80 kg ha-1); 6 - ammonium sulfate + dicyandiamide (40 + 40 kg ha-1); and 7 - ammonium sulfate + dicyandiamide (0 + 80 kg ha-1)]. The use of nitrification inhibitor and the C. spectabilis cover crop resulted in higher levels of ammonium in the soil. The application of the ammonium source without nitrification inhibitor in a total dose at 30 DAE and with inhibitor (split or total dose) resulted in the highest levels of nitrate in the soil.A utilização de plantas de cobertura pode alterar a rela-ção NO3-:NH4+ no solo, proporcionando maiores quantidades de NH4+ e podendo viabilizar o desenvolvimento de culturas que absorvem mais e preferem esta forma de nitrogênio (N), como o arroz. Objetivou-se avaliar a influência da interação de plantas de cobertura e fontes de N, com e sem inibidor de nitrificação (dicianodiamida), em sistema plantio direto (SPD). O experimento foi realizado em 2009/2010, em Botucatu (SP), em Latossolo Vermelho distroférrico cultivado por seis anos no SPD. O delineamento experimental foi em blocos casualizados, em esquema de parcela subdividida, com quatro repetições. As parcelas foram constituídas por seis espécies de plantas de cobertura do solo (Urochloa brizantha, U. decumbens, U. humidicola, U. ruziziensis, Pennisetum americanum e Crotalaria spectabilis) e as subparcelas por sete formas de fertilização nitrogenada, aos 0 e 30 dias após a emergência (DAE) do arroz [1 - controle, sem aplicação de nitrogênio; 2 - nitrato de cálcio (40 + 40 kg ha-1); 3 - nitrato de cálcio (0 + 80 kg ha-1); 4 - sulfato de amônio (40 + 40 kg ha-1); 5 - sulfato de amônio (0 + 80 kg ha-1); 6 - sulfato de amônio + dicianodiamida (40 + 40 kg ha-1); e 7 - sulfato de amônio + dicianodiamida (0 + 80 kg ha-1)]. O uso do inibidor de nitrificação e o cultivo de C. spectabilis proporcionaram maiores teores de amônio no solo. A aplicação da fonte amoniacal sem inibidor em dose total aos 30 DAE e com inibidor tanto parcelada quanto em dose total proporcionaram os maiores teores de nitrato no solo.Escola de Agronomia - Universidade Federal de Goiás2013-12-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://revistas.ufg.br/pat/article/view/22907Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics]; v. 43, n. 4, Oct./Dec. 2013; 424-435Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics); v. 43, n. 4, out./dez. 2013; 424-435Pesquisa Agropecuária Tropical; v. 43, n. 4, out./dez. 2013; 424-4351983-4063reponame:Pesquisa Agropecuária Tropical (Online)instname:Universidade Federal de Goiás (UFG)instacron:UFGporhttps://revistas.ufg.br/pat/article/view/22907/15579Copyright (c) 2020 Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics)info:eu-repo/semantics/openAccessMoro, EdemarCrusciol, Carlos Alexandre CostaNascente, Adriano StephanCantarella, Heitor2020-07-10T12:46:59Zoai:ojs.revistas.ufg.br:article/22907Revistahttps://revistas.ufg.br/patPUBhttps://revistas.ufg.br/pat/oaiaseleguini.pat@gmail.com||mgoes@agro.ufg.br1983-40631517-6398opendoar:2024-05-21T19:56:00.431543Pesquisa Agropecuária Tropical (Online) - Universidade Federal de Goiás (UFG)true |
dc.title.none.fl_str_mv |
Soil inorganic nitrogen content according to cover crops, nitrogen sources and nitrification inhibitor Teor de nitrogênio inorgânico no solo em função de plantas de cobertura, fontes de nitrogênio e inibidor de nitrificação |
title |
Soil inorganic nitrogen content according to cover crops, nitrogen sources and nitrification inhibitor |
spellingShingle |
Soil inorganic nitrogen content according to cover crops, nitrogen sources and nitrification inhibitor Moro, Edemar Urochloa spp. no-tillage system leaching. Urochloa spp. sistema plantio direto lixiviação. |
title_short |
Soil inorganic nitrogen content according to cover crops, nitrogen sources and nitrification inhibitor |
title_full |
Soil inorganic nitrogen content according to cover crops, nitrogen sources and nitrification inhibitor |
title_fullStr |
Soil inorganic nitrogen content according to cover crops, nitrogen sources and nitrification inhibitor |
title_full_unstemmed |
Soil inorganic nitrogen content according to cover crops, nitrogen sources and nitrification inhibitor |
title_sort |
Soil inorganic nitrogen content according to cover crops, nitrogen sources and nitrification inhibitor |
author |
Moro, Edemar |
author_facet |
Moro, Edemar Crusciol, Carlos Alexandre Costa Nascente, Adriano Stephan Cantarella, Heitor |
author_role |
author |
author2 |
Crusciol, Carlos Alexandre Costa Nascente, Adriano Stephan Cantarella, Heitor |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Moro, Edemar Crusciol, Carlos Alexandre Costa Nascente, Adriano Stephan Cantarella, Heitor |
dc.subject.por.fl_str_mv |
Urochloa spp. no-tillage system leaching. Urochloa spp. sistema plantio direto lixiviação. |
topic |
Urochloa spp. no-tillage system leaching. Urochloa spp. sistema plantio direto lixiviação. |
description |
The use of cover crops can change the soil NO3-: NH4+ ratio, providing larger amounts of NH4+, and enable the development of crops which absorb more or prefer this form of nitrogen (N), like rice. This study aimed at evaluating the effect of the interaction of cover crops and N sources, with and without nitrification inhibitor (dicyandiamide), under no-tillage system (NTS). The experiment was carried out in 2009/2010, in Botucatu, São Paulo State, Brazil, in an Oxisol under NTS for six years. The experimental design was randomized blocks, arranged in a split plot, with four replications. The plots consisted of six cover crops species (Urochloa brizantha, U. decumbens, U. humidicola, U. ruziziensis, Pennisetum americanum and Crotalaria spectabilis) and the split plots were seven forms of nitrogen fertilization, at 0 and 30 days after the emergence (DAE) of rice [1 - control, without N fertilization; 2 - calcium nitrate (40 + 40 kg ha-1); 3 - calcium nitrate (0 + 80 kg ha-1); 4 - ammonium sulfate (40 + 40 kgha-1); 5 - ammonium sulfate (0 + 80 kg ha-1); 6 - ammonium sulfate + dicyandiamide (40 + 40 kg ha-1); and 7 - ammonium sulfate + dicyandiamide (0 + 80 kg ha-1)]. The use of nitrification inhibitor and the C. spectabilis cover crop resulted in higher levels of ammonium in the soil. The application of the ammonium source without nitrification inhibitor in a total dose at 30 DAE and with inhibitor (split or total dose) resulted in the highest levels of nitrate in the soil. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-12-05 |
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://revistas.ufg.br/pat/article/view/22907 |
url |
https://revistas.ufg.br/pat/article/view/22907 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://revistas.ufg.br/pat/article/view/22907/15579 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2020 Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics) info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2020 Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics) |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Escola de Agronomia - Universidade Federal de Goiás |
publisher.none.fl_str_mv |
Escola de Agronomia - Universidade Federal de Goiás |
dc.source.none.fl_str_mv |
Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics]; v. 43, n. 4, Oct./Dec. 2013; 424-435 Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics); v. 43, n. 4, out./dez. 2013; 424-435 Pesquisa Agropecuária Tropical; v. 43, n. 4, out./dez. 2013; 424-435 1983-4063 reponame:Pesquisa Agropecuária Tropical (Online) instname:Universidade Federal de Goiás (UFG) instacron:UFG |
instname_str |
Universidade Federal de Goiás (UFG) |
instacron_str |
UFG |
institution |
UFG |
reponame_str |
Pesquisa Agropecuária Tropical (Online) |
collection |
Pesquisa Agropecuária Tropical (Online) |
repository.name.fl_str_mv |
Pesquisa Agropecuária Tropical (Online) - Universidade Federal de Goiás (UFG) |
repository.mail.fl_str_mv |
aseleguini.pat@gmail.com||mgoes@agro.ufg.br |
_version_ |
1799874818350252032 |