SULPHUR AVAILABILITY IN BRAZILIAN SOILS: EVALUATION OF SULPHUR NUTRITIONAL STATUS IN PLANTS
Autor(a) principal: | |
---|---|
Data de Publicação: | 2007 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Pesquisa Agropecuária Tropical (Online) |
Texto Completo: | https://revistas.ufg.br/pat/article/view/2647 |
Resumo: | A greenhouse experiment was carried out with surface samples of 12 soils from the States of São Paulo, Minas Gerais and Goiás (Brazil). Carbon content varied from 0.50 to 3.03%, total sulphur from 0.0104 to 0.0319% and clay content varied from 8 to 60%. Corn (Zea mays L.) was grown in two successive crops in the presence of tree rates of S applied as gypsum, namely 0, 20 and 40 ppm, previously incubated in absence and presence of lime. For the evaluation of the nutritional status of corn plants total sulphur and N/S and P/S ratios against dry matter yield and sulphur absorption were correlated. In sandy soils the critical level for total S in the tops of the corn plants were 0.14% and 0.20%, respectively, for dry matter and S uptake, in the case of the first cropping; for the second cropping it was 0.14% S. In the case of clayey soils (carbon> 1.2%), correlation coefficients were not significant in the first cropping; in the second one, however, the critical levels were found to be 0.20% for dry matter yield and 0.30% for S uptake. Close relationships were found, both in the first and in the second cropping, when the N/S ratio in the tops was plotted against S uptake: sulphur deficiency is associated with a ratio of 10-12/1. When data from the two croppings were analysed jointly, as well as in the case of the second one, significant correlations between P/S and S absorption were found. It is suggested that the P/S ratio 1/1 should be used as a critical value. The N/S ratio proved to be the most reliable parameter for the evaluation of the nutritional status of the plants with respect to sulphur. KEY-WORDS: Sulphur in plants; critical levels; N/S ratio; P/S ratio. |
id |
UFG-6_56f00b172d32a284b8fc709c95608695 |
---|---|
oai_identifier_str |
oai:ojs.revistas.ufg.br:article/2647 |
network_acronym_str |
UFG-6 |
network_name_str |
Pesquisa Agropecuária Tropical (Online) |
repository_id_str |
|
spelling |
SULPHUR AVAILABILITY IN BRAZILIAN SOILS: EVALUATION OF SULPHUR NUTRITIONAL STATUS IN PLANTSDISPONIBILIDADE DE ENXOFRE EM SOLOS BRASILEIROS: AVALIAÇÃO DO ESTADO NUTRICIONAL DE ENXOFRE NAS PLANTASSulphur in plantscritical levelsN/S ratioP/S ratioEnxofre em plantasnível críticorelação N/Srelação P/S A greenhouse experiment was carried out with surface samples of 12 soils from the States of São Paulo, Minas Gerais and Goiás (Brazil). Carbon content varied from 0.50 to 3.03%, total sulphur from 0.0104 to 0.0319% and clay content varied from 8 to 60%. Corn (Zea mays L.) was grown in two successive crops in the presence of tree rates of S applied as gypsum, namely 0, 20 and 40 ppm, previously incubated in absence and presence of lime. For the evaluation of the nutritional status of corn plants total sulphur and N/S and P/S ratios against dry matter yield and sulphur absorption were correlated. In sandy soils the critical level for total S in the tops of the corn plants were 0.14% and 0.20%, respectively, for dry matter and S uptake, in the case of the first cropping; for the second cropping it was 0.14% S. In the case of clayey soils (carbon> 1.2%), correlation coefficients were not significant in the first cropping; in the second one, however, the critical levels were found to be 0.20% for dry matter yield and 0.30% for S uptake. Close relationships were found, both in the first and in the second cropping, when the N/S ratio in the tops was plotted against S uptake: sulphur deficiency is associated with a ratio of 10-12/1. When data from the two croppings were analysed jointly, as well as in the case of the second one, significant correlations between P/S and S absorption were found. It is suggested that the P/S ratio 1/1 should be used as a critical value. The N/S ratio proved to be the most reliable parameter for the evaluation of the nutritional status of the plants with respect to sulphur. KEY-WORDS: Sulphur in plants; critical levels; N/S ratio; P/S ratio. Conduziu-se um experimento em casa de vegetação com amostras superficiais de 12 solos, provenientes dos Estados de São Paulo, Minas Gerais e Goiás (Brasil), com teores de carbono variando entre 0,50 e 3,03%, de enxofre total entre 0,0104 e 0,0319% e de argila entre 8 e 60%. Os solos foram submetidos a dois cultivos sucessivos com milho (Zea mays L.) com 3 doses de gesso (0, 20 e 40 ppm de S), previamente incubados na ausência e presença de calagem. Para a avaliação do estado nutricional de enxofre correlacionaram-se o enxofre total e as razões N/S e P/S da parte aérea do milho com a produção de matéria seca e absorção de enxofre. Os níveis críticos de enxofre total na parte aérea do milho com a produção de matéria seca e absorção de enxofre foram de 0,14% e 0,20%, respectivamente, no primeiro cultivo dos solos arenosos; no segundo cultivo, determinou-se o nível crítico de 0,14% para ambos os casos. No cultivo dos solos argilosos, com teores de carbono superiores a 1,2%, foi possível estabelecer níveis críticos de enxofre total de 0,20% para a produção de matéria seca, de 0,30% para a absorção de enxofre apenas no segundo cultivo. A razão N/S da parte aérea do milho, que caracteriza a deficiência de enxofre total, esteve ao redor de 10 a 12, correlacionando-se significativamente com a absorção de enxofre nos dois cultivos dos solos. Pela análise conjunta dos dados dos dois cultivos, bem como do segundo, encontraram-se estreitas relações entre a absorção de S e a razão P/S, sugerindo-se o valor crítico de 1/1. A razão N/S revelou-se, dentre os parâmetros estudados, como o mais preciso para diagnosticar a deficiência de enxofre em plantas. PALAVRAS-CHAVE: Enxofre em plantas; nível crítico; relação N/S; relação P/S.Escola de Agronomia - Universidade Federal de Goiás2007-12-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionAvaliado por paresapplication/pdfhttps://revistas.ufg.br/pat/article/view/2647Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics]; v. 24, n. 1, Jan./Dec. 1994; 17-35Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics); v. 24, n. 1, jan./dez. 1994; 17-35Pesquisa Agropecuária Tropical; v. 24, n. 1, jan./dez. 1994; 17-351983-4063reponame:Pesquisa Agropecuária Tropical (Online)instname:Universidade Federal de Goiás (UFG)instacron:UFGporhttps://revistas.ufg.br/pat/article/view/2647/2695Kliemann, Huberto JoséMalavolta, Eurípedesinfo:eu-repo/semantics/openAccess2009-06-17T20:51:28Zoai:ojs.revistas.ufg.br:article/2647Revistahttps://revistas.ufg.br/patPUBhttps://revistas.ufg.br/pat/oaiaseleguini.pat@gmail.com||mgoes@agro.ufg.br1983-40631517-6398opendoar:2024-05-21T19:55:18.841213Pesquisa Agropecuária Tropical (Online) - Universidade Federal de Goiás (UFG)true |
dc.title.none.fl_str_mv |
SULPHUR AVAILABILITY IN BRAZILIAN SOILS: EVALUATION OF SULPHUR NUTRITIONAL STATUS IN PLANTS DISPONIBILIDADE DE ENXOFRE EM SOLOS BRASILEIROS: AVALIAÇÃO DO ESTADO NUTRICIONAL DE ENXOFRE NAS PLANTAS |
title |
SULPHUR AVAILABILITY IN BRAZILIAN SOILS: EVALUATION OF SULPHUR NUTRITIONAL STATUS IN PLANTS |
spellingShingle |
SULPHUR AVAILABILITY IN BRAZILIAN SOILS: EVALUATION OF SULPHUR NUTRITIONAL STATUS IN PLANTS Kliemann, Huberto José Sulphur in plants critical levels N/S ratio P/S ratio Enxofre em plantas nível crítico relação N/S relação P/S |
title_short |
SULPHUR AVAILABILITY IN BRAZILIAN SOILS: EVALUATION OF SULPHUR NUTRITIONAL STATUS IN PLANTS |
title_full |
SULPHUR AVAILABILITY IN BRAZILIAN SOILS: EVALUATION OF SULPHUR NUTRITIONAL STATUS IN PLANTS |
title_fullStr |
SULPHUR AVAILABILITY IN BRAZILIAN SOILS: EVALUATION OF SULPHUR NUTRITIONAL STATUS IN PLANTS |
title_full_unstemmed |
SULPHUR AVAILABILITY IN BRAZILIAN SOILS: EVALUATION OF SULPHUR NUTRITIONAL STATUS IN PLANTS |
title_sort |
SULPHUR AVAILABILITY IN BRAZILIAN SOILS: EVALUATION OF SULPHUR NUTRITIONAL STATUS IN PLANTS |
author |
Kliemann, Huberto José |
author_facet |
Kliemann, Huberto José Malavolta, Eurípedes |
author_role |
author |
author2 |
Malavolta, Eurípedes |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Kliemann, Huberto José Malavolta, Eurípedes |
dc.subject.por.fl_str_mv |
Sulphur in plants critical levels N/S ratio P/S ratio Enxofre em plantas nível crítico relação N/S relação P/S |
topic |
Sulphur in plants critical levels N/S ratio P/S ratio Enxofre em plantas nível crítico relação N/S relação P/S |
description |
A greenhouse experiment was carried out with surface samples of 12 soils from the States of São Paulo, Minas Gerais and Goiás (Brazil). Carbon content varied from 0.50 to 3.03%, total sulphur from 0.0104 to 0.0319% and clay content varied from 8 to 60%. Corn (Zea mays L.) was grown in two successive crops in the presence of tree rates of S applied as gypsum, namely 0, 20 and 40 ppm, previously incubated in absence and presence of lime. For the evaluation of the nutritional status of corn plants total sulphur and N/S and P/S ratios against dry matter yield and sulphur absorption were correlated. In sandy soils the critical level for total S in the tops of the corn plants were 0.14% and 0.20%, respectively, for dry matter and S uptake, in the case of the first cropping; for the second cropping it was 0.14% S. In the case of clayey soils (carbon> 1.2%), correlation coefficients were not significant in the first cropping; in the second one, however, the critical levels were found to be 0.20% for dry matter yield and 0.30% for S uptake. Close relationships were found, both in the first and in the second cropping, when the N/S ratio in the tops was plotted against S uptake: sulphur deficiency is associated with a ratio of 10-12/1. When data from the two croppings were analysed jointly, as well as in the case of the second one, significant correlations between P/S and S absorption were found. It is suggested that the P/S ratio 1/1 should be used as a critical value. The N/S ratio proved to be the most reliable parameter for the evaluation of the nutritional status of the plants with respect to sulphur. KEY-WORDS: Sulphur in plants; critical levels; N/S ratio; P/S ratio. |
publishDate |
2007 |
dc.date.none.fl_str_mv |
2007-12-06 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Avaliado por pares |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://revistas.ufg.br/pat/article/view/2647 |
url |
https://revistas.ufg.br/pat/article/view/2647 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://revistas.ufg.br/pat/article/view/2647/2695 |
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 |
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. 24, n. 1, Jan./Dec. 1994; 17-35 Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics); v. 24, n. 1, jan./dez. 1994; 17-35 Pesquisa Agropecuária Tropical; v. 24, n. 1, jan./dez. 1994; 17-35 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_ |
1799874815374393344 |