|
|
![](/consulta/web/img/deny.png) | Acesso ao texto completo restrito à biblioteca da Embrapa Soja. Para informações adicionais entre em contato com valeria.cardoso@embrapa.br. |
Registro Completo |
Biblioteca(s): |
Embrapa Soja. |
Data corrente: |
06/12/2011 |
Data da última atualização: |
03/08/2017 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
CONTE, O.; LEVIEN, R.; DEBIASI, H.; STURMER, S. L. K.; MAZURANA, M.; MULLER, J. |
Afiliação: |
OSMAR CONTE, UFRGS; RENATO LEVIEN, UFRGS; HENRIQUE DEBIASI, CNPSO; SIDINEI LEANDRO KLOCKNER STURMER, UFRGS; MICHAEL MAZURANA, UFRGS; JÔNATAN MULLER, UFRGS. |
Título: |
Soil disturbance index as an indicator of seed drill efficiency in no-tillage agrosystems. |
Ano de publicação: |
2011 |
Fonte/Imprenta: |
Soil & Tillage Research, Amsterdam, v. 114, n. 1, p. 37-42, 2011. |
DOI: |
http://dx.doi.org/10.1016/j.still.2011.03.007 |
Idioma: |
Inglês |
Conteúdo: |
In no-tillage agroecosystems, furrow openers prepare the seed line to place the seeds and fertilizers, and this event represents a unique opportunity to disturb the soil in this kind of crop system. Shanks are used to promote an appropriate soil physical condition, and, in case of soil compaction problems, shanks are used more frequently and at deeper layers of the soil profile. However, this deeper use causes greater draught and does not appropriately disturb the soil because narrow shanks have limited depth performance (critical depth). Here, we tested the operation of shanks in Oxisol and Alfisol. We assessed the shank performance 618 cm of depth, and we evaluated several soil disturbance parameters, such as area of groove, effective depth, and volume, as well as the demand of power force. Based on this evaluation, we calculated the specific power demand and the disturbance index, which is obtained from the ratio of disturbed area and maximum depth. With increasing depth of operation, the specific power demand increased in both soil types, while the disturbance index remaining approximately constant in the Oxisol and decreasing in the Alfisol. In the latter soil type, the shanks operated at more than 12 cm deep, and the lower disturbance index indicated a loss of efficiency in the soil disturbance. Therefore, the disturbance index is an efficient indicator of both the performance of seed drill shanks and the soil disturbance in no-till systems. |
Thesagro: |
Solo. |
Categoria do assunto: |
-- |
Marc: |
LEADER 02079naa a2200205 a 4500 001 1908690 005 2017-08-03 008 2011 bl uuuu u00u1 u #d 024 7 $ahttp://dx.doi.org/10.1016/j.still.2011.03.007$2DOI 100 1 $aCONTE, O. 245 $aSoil disturbance index as an indicator of seed drill efficiency in no-tillage agrosystems. 260 $c2011 520 $aIn no-tillage agroecosystems, furrow openers prepare the seed line to place the seeds and fertilizers, and this event represents a unique opportunity to disturb the soil in this kind of crop system. Shanks are used to promote an appropriate soil physical condition, and, in case of soil compaction problems, shanks are used more frequently and at deeper layers of the soil profile. However, this deeper use causes greater draught and does not appropriately disturb the soil because narrow shanks have limited depth performance (critical depth). Here, we tested the operation of shanks in Oxisol and Alfisol. We assessed the shank performance 618 cm of depth, and we evaluated several soil disturbance parameters, such as area of groove, effective depth, and volume, as well as the demand of power force. Based on this evaluation, we calculated the specific power demand and the disturbance index, which is obtained from the ratio of disturbed area and maximum depth. With increasing depth of operation, the specific power demand increased in both soil types, while the disturbance index remaining approximately constant in the Oxisol and decreasing in the Alfisol. In the latter soil type, the shanks operated at more than 12 cm deep, and the lower disturbance index indicated a loss of efficiency in the soil disturbance. Therefore, the disturbance index is an efficient indicator of both the performance of seed drill shanks and the soil disturbance in no-till systems. 650 $aSolo 700 1 $aLEVIEN, R. 700 1 $aDEBIASI, H. 700 1 $aSTURMER, S. L. K. 700 1 $aMAZURANA, M. 700 1 $aMULLER, J. 773 $tSoil & Tillage Research, Amsterdam$gv. 114, n. 1, p. 37-42, 2011.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Soja (CNPSO) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
![](/consulta/web/img/deny.png) | Acesso ao texto completo restrito à biblioteca da Embrapa Algodão. Para informações adicionais entre em contato com cnpa.biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Algodão. |
Data corrente: |
23/08/1993 |
Data da última atualização: |
28/04/2022 |
Autoria: |
BLEICHER, E.; MELO, A. B. P.; JESUS, F. M. M. de; FERRAZ, C. T. |
Título: |
Distribuição vertical de lagartas de Alabama argillacea (Hubner,1818) (Lepidoptera; Noctuidae) em plantas de algodoeiro herbáceo-comunicação científica |
Ano de publicação: |
1983 |
Fonte/Imprenta: |
Anais da Sociedade Entomologica do Brasil, v. 12, n. 1, p.117-121, 1983. |
Idioma: |
Português |
Thesagro: |
Alabama Argillacea; Algodão Herbáceo; Gossypium Hirsutum; Lagarta; Praga. |
Thesaurus NAL: |
Cotton; Pests. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00727naa a2200229 a 4500 001 1262714 005 2022-04-28 008 1983 bl --- 0-- u #d 100 1 $aBLEICHER, E. 245 $aDistribuição vertical de lagartas de Alabama argillacea (Hubner,1818) (Lepidoptera; Noctuidae) em plantas de algodoeiro herbáceo-comunicação científica 260 $c1983 650 $aCotton 650 $aPests 650 $aAlabama Argillacea 650 $aAlgodão Herbáceo 650 $aGossypium Hirsutum 650 $aLagarta 650 $aPraga 700 1 $aMELO, A. B. P. 700 1 $aJESUS, F. M. M. de 700 1 $aFERRAZ, C. T. 773 $tAnais da Sociedade Entomologica do Brasil$gv. 12, n. 1, p.117-121, 1983.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Algodão (CNPA) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
Expressão de busca inválida. Verifique!!! |
|
|