Effects of mineral nitrogen and soil temperature on nitrogen fixation of field beans (Phaseolus vulgarisL.)
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Pesquisa Agropecuária Brasileira (Online) |
Texto Completo: | https://seer.sct.embrapa.br/index.php/pab/article/view/17350 |
Resumo: | In two greenhouse experiments, one in sterilized Leonard jars with sand and one in pots with a Red-Yellow Podzolic soil, the effects on nodulation and nitrogen fixation of low mineral nitrogen applications, were studied at two soil temperatures in field beans. Application of 23 ppm of N at planting and 20 days after, in Leonard jars avoided the hunger stage after the seed reserve had been exausted. Due to much faster initial plant growth, nodule numbers and nodule weight increased with mineral nitrogen. The same amount of N applied to soil did not affect nodulation or plant growth. Twice the amount of mineral N (46 ppm) increased plant growth, especially at the higher soil temperatures. In the cooled post some of the strains fixed nitrogen equivalent to the mineral N application of 45 ppm (92 kg/ha). Soil temperatures above 32°C (daily maxima) decreased nodule efficiency, but some strains were able to compensate by an increase in nodule number and size at the higher soil temperature. |
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Effects of mineral nitrogen and soil temperature on nitrogen fixation of field beans (Phaseolus vulgarisL.)Efeito da adubação nitrogenada e da temperatura do solo na fixação do nitrogênio em feijão (Phaseolus vulgaris)In two greenhouse experiments, one in sterilized Leonard jars with sand and one in pots with a Red-Yellow Podzolic soil, the effects on nodulation and nitrogen fixation of low mineral nitrogen applications, were studied at two soil temperatures in field beans. Application of 23 ppm of N at planting and 20 days after, in Leonard jars avoided the hunger stage after the seed reserve had been exausted. Due to much faster initial plant growth, nodule numbers and nodule weight increased with mineral nitrogen. The same amount of N applied to soil did not affect nodulation or plant growth. Twice the amount of mineral N (46 ppm) increased plant growth, especially at the higher soil temperatures. In the cooled post some of the strains fixed nitrogen equivalent to the mineral N application of 45 ppm (92 kg/ha). Soil temperatures above 32°C (daily maxima) decreased nodule efficiency, but some strains were able to compensate by an increase in nodule number and size at the higher soil temperature.Foram feitos dois experimentos de vasos em casa de vegetação, um com areia e outro com solo da série Itaguaí (Podzólico vermelho-amarelo), com a finalidade de observar o efeito de doses moderadas de N mineral (23 ppm) aplicadas em diversas épocas e a interferência da temperatura do solo na nodulação e simbiose das estirpes de Rhizobium phaseoli com feijão (Phaseolus vulgaris L.). A aplicação de 23 ppm de N no plantio ou 20 dias após, em vasos com areia, evitou a fase crítica de deficiência de N, aumentando número e peso dos nódulos e o desenvolvimento das plantas. No solo, esta dosagem de N não afetou a nodulação nem o peso das plantas. A dosagem dupla, 46 ppm, aumentou o desenvolvimento das plantas, principalmente nos tratamentos quentes. Nos vasos “frios" algumas estirpes fixaram N equivalente à adubação mineral com 46 ppm. Temperaturas máximas diurnas acima de 32°C prejudicaram seriamente a eficiência nodular, o que foi compensado, por algumas estirpes, pelo aumento do número e peso dos nódulos. Nestes experimentos, devido às variações na eficiência nodular, a correlação entre peso dos nódulos e N total fixado foi muito baixa (Exp. 1: Testemunhas, r = 0,45 e plantas adubadas com 23 ppm de N, r = 0,60**; Exp. 2: Testemunha, r = 0,41 e plantas adubadas com 23 ppm de N, r = 0,23).Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraGuss, AgenorDobereiner, Johanna2014-04-15info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/17350Pesquisa Agropecuaria Brasileira; v.7, n.6, 1972: Série Agronomia; 87-92Pesquisa Agropecuária Brasileira; v.7, n.6, 1972: Série Agronomia; 87-921678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/17350/11607info:eu-repo/semantics/openAccess2014-04-15T18:40:30Zoai:ojs.seer.sct.embrapa.br:article/17350Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-04-15T18:40:30Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Effects of mineral nitrogen and soil temperature on nitrogen fixation of field beans (Phaseolus vulgarisL.) Efeito da adubação nitrogenada e da temperatura do solo na fixação do nitrogênio em feijão (Phaseolus vulgaris) |
title |
Effects of mineral nitrogen and soil temperature on nitrogen fixation of field beans (Phaseolus vulgarisL.) |
spellingShingle |
Effects of mineral nitrogen and soil temperature on nitrogen fixation of field beans (Phaseolus vulgarisL.) Guss, Agenor |
title_short |
Effects of mineral nitrogen and soil temperature on nitrogen fixation of field beans (Phaseolus vulgarisL.) |
title_full |
Effects of mineral nitrogen and soil temperature on nitrogen fixation of field beans (Phaseolus vulgarisL.) |
title_fullStr |
Effects of mineral nitrogen and soil temperature on nitrogen fixation of field beans (Phaseolus vulgarisL.) |
title_full_unstemmed |
Effects of mineral nitrogen and soil temperature on nitrogen fixation of field beans (Phaseolus vulgarisL.) |
title_sort |
Effects of mineral nitrogen and soil temperature on nitrogen fixation of field beans (Phaseolus vulgarisL.) |
author |
Guss, Agenor |
author_facet |
Guss, Agenor Dobereiner, Johanna |
author_role |
author |
author2 |
Dobereiner, Johanna |
author2_role |
author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
Guss, Agenor Dobereiner, Johanna |
dc.subject.none.fl_str_mv |
|
description |
In two greenhouse experiments, one in sterilized Leonard jars with sand and one in pots with a Red-Yellow Podzolic soil, the effects on nodulation and nitrogen fixation of low mineral nitrogen applications, were studied at two soil temperatures in field beans. Application of 23 ppm of N at planting and 20 days after, in Leonard jars avoided the hunger stage after the seed reserve had been exausted. Due to much faster initial plant growth, nodule numbers and nodule weight increased with mineral nitrogen. The same amount of N applied to soil did not affect nodulation or plant growth. Twice the amount of mineral N (46 ppm) increased plant growth, especially at the higher soil temperatures. In the cooled post some of the strains fixed nitrogen equivalent to the mineral N application of 45 ppm (92 kg/ha). Soil temperatures above 32°C (daily maxima) decreased nodule efficiency, but some strains were able to compensate by an increase in nodule number and size at the higher soil temperature. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-04-15 |
dc.type.none.fl_str_mv |
|
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://seer.sct.embrapa.br/index.php/pab/article/view/17350 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/17350 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/17350/11607 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
dc.source.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira; v.7, n.6, 1972: Série Agronomia; 87-92 Pesquisa Agropecuária Brasileira; v.7, n.6, 1972: Série Agronomia; 87-92 1678-3921 0100-104x reponame:Pesquisa Agropecuária Brasileira (Online) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Pesquisa Agropecuária Brasileira (Online) |
collection |
Pesquisa Agropecuária Brasileira (Online) |
repository.name.fl_str_mv |
Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
pab@sct.embrapa.br || sct.pab@embrapa.br |
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1793416680960950272 |