Intervalo hídrico ótimo em solo sob rotação de culturas e escarificação
Autor(a) principal: | |
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Data de Publicação: | 2011 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng por |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/S0100-06832011000300012 http://hdl.handle.net/11449/226486 |
Resumo: | Soil water availability to plants is affected by soil compaction and other variables. The Least Limiting Water Range (LLWR) comprises soil physical variables affecting root growth and soil water availability, and can be managed by either mechanical or biological methods. There is evidence that effects of crop rotations could last longer than chiseling, so the objective of this study was to assess the effect of soil chiseling or growing cover crops under no-till (NT) on the LLWR. Crop rotations involving triticale (X Triticosecale) and sunflower (Helianthus annuus) in the fall-winter associated with millet (Pennisetum glaucum), sorghum (Sorghum bicolor) and sunn hemp (Crotalaria juncea) as cover crops preceding soybean (Glycine max) were repeated for three consecutive years. In the treatment with chiseling (performed only in the first year), the area was left fallow between the fall-winter and summer crops. The experiment was carried out in Botucatu, São Paulo State, Brazil, from 2003 to 2006 on a Typic Rhodudalf. The LLWR was determined in soil samples taken from the layers 0-20 cm and 20-40 cm, after chemical desiccation of the cover crops in December of the first and third year of the experiment. Chiseling decreases soil bulk density in the 0-20 cm soil layer, increasing the LLWR magnitude by lowering the soil water content at which penetration resistance reaches 2.0 MPa; this effect is present up to the third year after chiseling and can reach to a depth of 0.40 m. Crop rotations involving sunflower + sunn hemp, triticale + millet and triticale + sunn hemp for three years prevented soil bulk density from exceeding the critical soil bulk density in the 0-0.20 m layer. This effect was observed to a depth of 0.40 m after three years of chiseling under crop rotations involving forage sorghum. Hence, chiseling and some crop rotations under no tillage are effective in increasing soil quality assessed by the LLWR. |
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Intervalo hídrico ótimo em solo sob rotação de culturas e escarificaçãoLeast limiting water range in soil under crop rotations and chiselingCover cropsCrop rotationNo tillSoil compactionSoil waterSoil water availability to plants is affected by soil compaction and other variables. The Least Limiting Water Range (LLWR) comprises soil physical variables affecting root growth and soil water availability, and can be managed by either mechanical or biological methods. There is evidence that effects of crop rotations could last longer than chiseling, so the objective of this study was to assess the effect of soil chiseling or growing cover crops under no-till (NT) on the LLWR. Crop rotations involving triticale (X Triticosecale) and sunflower (Helianthus annuus) in the fall-winter associated with millet (Pennisetum glaucum), sorghum (Sorghum bicolor) and sunn hemp (Crotalaria juncea) as cover crops preceding soybean (Glycine max) were repeated for three consecutive years. In the treatment with chiseling (performed only in the first year), the area was left fallow between the fall-winter and summer crops. The experiment was carried out in Botucatu, São Paulo State, Brazil, from 2003 to 2006 on a Typic Rhodudalf. The LLWR was determined in soil samples taken from the layers 0-20 cm and 20-40 cm, after chemical desiccation of the cover crops in December of the first and third year of the experiment. Chiseling decreases soil bulk density in the 0-20 cm soil layer, increasing the LLWR magnitude by lowering the soil water content at which penetration resistance reaches 2.0 MPa; this effect is present up to the third year after chiseling and can reach to a depth of 0.40 m. Crop rotations involving sunflower + sunn hemp, triticale + millet and triticale + sunn hemp for three years prevented soil bulk density from exceeding the critical soil bulk density in the 0-0.20 m layer. This effect was observed to a depth of 0.40 m after three years of chiseling under crop rotations involving forage sorghum. Hence, chiseling and some crop rotations under no tillage are effective in increasing soil quality assessed by the LLWR.Center of Agricultural Sciences UNOESTE, CEP 19067-175, Presidente Prudente, SPDepartment of Crop Science College of Agricultural Sciences São Paulo State University, Botucatu, SPDepartment of Crop Science College of Agricultural Sciences São Paulo State University, Botucatu, SPUNOESTEUniversidade Estadual Paulista (UNESP)Calonego, Juliano CarlosRosolem, Ciro Antonio [UNESP]2022-04-29T00:13:44Z2022-04-29T00:13:44Z2011-08-29info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article759-771http://dx.doi.org/10.1590/S0100-06832011000300012Revista Brasileira de Ciencia do Solo, v. 35, n. 3, p. 759-771, 2011.0100-06831806-9657http://hdl.handle.net/11449/22648610.1590/S0100-068320110003000122-s2.0-80052010866Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengporRevista Brasileira de Ciencia do Soloinfo:eu-repo/semantics/openAccess2024-04-30T15:57:13Zoai:repositorio.unesp.br:11449/226486Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-04-30T15:57:13Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Intervalo hídrico ótimo em solo sob rotação de culturas e escarificação Least limiting water range in soil under crop rotations and chiseling |
title |
Intervalo hídrico ótimo em solo sob rotação de culturas e escarificação |
spellingShingle |
Intervalo hídrico ótimo em solo sob rotação de culturas e escarificação Calonego, Juliano Carlos Cover crops Crop rotation No till Soil compaction Soil water |
title_short |
Intervalo hídrico ótimo em solo sob rotação de culturas e escarificação |
title_full |
Intervalo hídrico ótimo em solo sob rotação de culturas e escarificação |
title_fullStr |
Intervalo hídrico ótimo em solo sob rotação de culturas e escarificação |
title_full_unstemmed |
Intervalo hídrico ótimo em solo sob rotação de culturas e escarificação |
title_sort |
Intervalo hídrico ótimo em solo sob rotação de culturas e escarificação |
author |
Calonego, Juliano Carlos |
author_facet |
Calonego, Juliano Carlos Rosolem, Ciro Antonio [UNESP] |
author_role |
author |
author2 |
Rosolem, Ciro Antonio [UNESP] |
author2_role |
author |
dc.contributor.none.fl_str_mv |
UNOESTE Universidade Estadual Paulista (UNESP) |
dc.contributor.author.fl_str_mv |
Calonego, Juliano Carlos Rosolem, Ciro Antonio [UNESP] |
dc.subject.por.fl_str_mv |
Cover crops Crop rotation No till Soil compaction Soil water |
topic |
Cover crops Crop rotation No till Soil compaction Soil water |
description |
Soil water availability to plants is affected by soil compaction and other variables. The Least Limiting Water Range (LLWR) comprises soil physical variables affecting root growth and soil water availability, and can be managed by either mechanical or biological methods. There is evidence that effects of crop rotations could last longer than chiseling, so the objective of this study was to assess the effect of soil chiseling or growing cover crops under no-till (NT) on the LLWR. Crop rotations involving triticale (X Triticosecale) and sunflower (Helianthus annuus) in the fall-winter associated with millet (Pennisetum glaucum), sorghum (Sorghum bicolor) and sunn hemp (Crotalaria juncea) as cover crops preceding soybean (Glycine max) were repeated for three consecutive years. In the treatment with chiseling (performed only in the first year), the area was left fallow between the fall-winter and summer crops. The experiment was carried out in Botucatu, São Paulo State, Brazil, from 2003 to 2006 on a Typic Rhodudalf. The LLWR was determined in soil samples taken from the layers 0-20 cm and 20-40 cm, after chemical desiccation of the cover crops in December of the first and third year of the experiment. Chiseling decreases soil bulk density in the 0-20 cm soil layer, increasing the LLWR magnitude by lowering the soil water content at which penetration resistance reaches 2.0 MPa; this effect is present up to the third year after chiseling and can reach to a depth of 0.40 m. Crop rotations involving sunflower + sunn hemp, triticale + millet and triticale + sunn hemp for three years prevented soil bulk density from exceeding the critical soil bulk density in the 0-0.20 m layer. This effect was observed to a depth of 0.40 m after three years of chiseling under crop rotations involving forage sorghum. Hence, chiseling and some crop rotations under no tillage are effective in increasing soil quality assessed by the LLWR. |
publishDate |
2011 |
dc.date.none.fl_str_mv |
2011-08-29 2022-04-29T00:13:44Z 2022-04-29T00:13:44Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1590/S0100-06832011000300012 Revista Brasileira de Ciencia do Solo, v. 35, n. 3, p. 759-771, 2011. 0100-0683 1806-9657 http://hdl.handle.net/11449/226486 10.1590/S0100-06832011000300012 2-s2.0-80052010866 |
url |
http://dx.doi.org/10.1590/S0100-06832011000300012 http://hdl.handle.net/11449/226486 |
identifier_str_mv |
Revista Brasileira de Ciencia do Solo, v. 35, n. 3, p. 759-771, 2011. 0100-0683 1806-9657 10.1590/S0100-06832011000300012 2-s2.0-80052010866 |
dc.language.iso.fl_str_mv |
eng por |
language |
eng por |
dc.relation.none.fl_str_mv |
Revista Brasileira de Ciencia do Solo |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
759-771 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1799965130301112320 |