| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Meio Ambiente. |
|
Data corrente: |
16/03/2012 |
|
Data da última atualização: |
30/10/2019 |
|
Tipo da produção científica: |
Artigo em Anais de Congresso |
|
Autoria: |
RAMOS, N. P.; PACKER, A. P.; VIEIRA, H. B.; MORICONI, W.; ASSIS, M. C. de; ROSSETTO, R. |
|
Afiliação: |
NILZA PATRICIA RAMOS, CNPMA; ANA PAULA CONTADOR PACKER, CNPMA; HENRIQUE BARROS VIEIRA, CNPMA; WALDEMORE MORICONI, CNPMA; MARTA CAMARGO DE ASSIS, CNPMA; RAFFAELLA ROSSETTO, APTA. |
|
Título: |
Weed population under different amounts of sugarcane straw in São Paulo State, Brazil. |
|
Ano de publicação: |
2011 |
|
Fonte/Imprenta: |
In: INTERNATIONAL SUGAR CONFERENCE, 4., 2011. Nova Delhi. Balancing sugar and energy production in developing countries: sustainable technologies and marketing strategies. Proceedings... Nova Delhi: IAPSIT, 2011. p. 127-129. |
|
Idioma: |
Inglês |
|
Conteúdo: |
Abstract: Maintenance of the straws on the soil surface has been proved essential for environrnental quality of the sugarcane productive system in Brazil. However, this practice requires changes in the current management systems used around the country. This requires the use of tolerant varieties to the presence of straw residue on the soil surface, improvement in fertilization process, and also pest, disease and weeds control. In this context, this study aimed to evaluate the incidence of weed populations in the sugarcane cultivation under different levels of straw, in order to support possible changes in the management of these plants. Treatments were based on five levels of straw left on the soil surface at harvest, as follows: 0% - 25% - 50% - 75% - 100%, arranged in a randomized block design with four replications. The weeds evaluation was performed using the square method randomly thrown on the floor throughout the experiment area, reaching a total of ten samples per plot. This method was used to determine the density (plants/m2) and absolute frequency (%) of the predominant species individuais in three assessments (34, 106 and 177 days after harvesting). It was observed the predominance of the species Cyperus rotundus L. and Cynodon dactylon L. Pers. independently of treatments applied. At 34 days after harvest Cyperus rotundus was the more frequent weed in the treatments with low and no straw respectively, however with 106 pos-harvests the presence of higher levels of straw (75% and 100%) privileged the growth of this species. Results shown that there was a tendency to increase the number of Cyperus rotundus individuais per area with the development sugarcane cycle, due to the increase in the layer of straw left on the soil. MenosAbstract: Maintenance of the straws on the soil surface has been proved essential for environrnental quality of the sugarcane productive system in Brazil. However, this practice requires changes in the current management systems used around the country. This requires the use of tolerant varieties to the presence of straw residue on the soil surface, improvement in fertilization process, and also pest, disease and weeds control. In this context, this study aimed to evaluate the incidence of weed populations in the sugarcane cultivation under different levels of straw, in order to support possible changes in the management of these plants. Treatments were based on five levels of straw left on the soil surface at harvest, as follows: 0% - 25% - 50% - 75% - 100%, arranged in a randomized block design with four replications. The weeds evaluation was performed using the square method randomly thrown on the floor throughout the experiment area, reaching a total of ten samples per plot. This method was used to determine the density (plants/m2) and absolute frequency (%) of the predominant species individuais in three assessments (34, 106 and 177 days after harvesting). It was observed the predominance of the species Cyperus rotundus L. and Cynodon dactylon L. Pers. independently of treatments applied. At 34 days after harvest Cyperus rotundus was the more frequent weed in the treatments with low and no straw respectively, however with 106 pos-harvests the presence of higher levels o... Mostrar Tudo |
|
Palavras-Chave: |
Agricultural residue; Cana-de-açúcar; Sugarcane straw. |
|
Thesagro: |
Palha; Praga de planta. |
|
Thesaurus Nal: |
Soil conservation; Straw; Sugarcane; weeds. |
|
Categoria do assunto: |
H Saúde e Patologia |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/55898/1/2011AA77.pdf
|
|
Marc: |
LEADER 02714nam a2200277 a 4500
001 1919152
005 2019-10-30
008 2011 bl uuuu u00u1 u #d
100 1 $aRAMOS, N. P.
245 $aWeed population under different amounts of sugarcane straw in São Paulo State, Brazil.$h[electronic resource]
260 $aIn: INTERNATIONAL SUGAR CONFERENCE, 4., 2011. Nova Delhi. Balancing sugar and energy production in developing countries: sustainable technologies and marketing strategies. Proceedings... Nova Delhi: IAPSIT, 2011. p. 127-129.$c2011
520 $aAbstract: Maintenance of the straws on the soil surface has been proved essential for environrnental quality of the sugarcane productive system in Brazil. However, this practice requires changes in the current management systems used around the country. This requires the use of tolerant varieties to the presence of straw residue on the soil surface, improvement in fertilization process, and also pest, disease and weeds control. In this context, this study aimed to evaluate the incidence of weed populations in the sugarcane cultivation under different levels of straw, in order to support possible changes in the management of these plants. Treatments were based on five levels of straw left on the soil surface at harvest, as follows: 0% - 25% - 50% - 75% - 100%, arranged in a randomized block design with four replications. The weeds evaluation was performed using the square method randomly thrown on the floor throughout the experiment area, reaching a total of ten samples per plot. This method was used to determine the density (plants/m2) and absolute frequency (%) of the predominant species individuais in three assessments (34, 106 and 177 days after harvesting). It was observed the predominance of the species Cyperus rotundus L. and Cynodon dactylon L. Pers. independently of treatments applied. At 34 days after harvest Cyperus rotundus was the more frequent weed in the treatments with low and no straw respectively, however with 106 pos-harvests the presence of higher levels of straw (75% and 100%) privileged the growth of this species. Results shown that there was a tendency to increase the number of Cyperus rotundus individuais per area with the development sugarcane cycle, due to the increase in the layer of straw left on the soil.
650 $aSoil conservation
650 $aStraw
650 $aSugarcane
650 $aweeds
650 $aPalha
650 $aPraga de planta
653 $aAgricultural residue
653 $aCana-de-açúcar
653 $aSugarcane straw
700 1 $aPACKER, A. P.
700 1 $aVIEIRA, H. B.
700 1 $aMORICONI, W.
700 1 $aASSIS, M. C. de
700 1 $aROSSETTO, R.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Meio Ambiente (CNPMA) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Agrobiologia. Para informações adicionais entre em contato com cnpab.biblioteca@embrapa.br. |
Registro Completo
|
Biblioteca(s): |
Embrapa Agrobiologia. |
|
Data corrente: |
25/05/2004 |
|
Data da última atualização: |
25/05/2004 |
|
Autoria: |
FIGUEIREDO, F. E. da R.; ASSIS, R. L. de; REYDON, B. P. |
|
Título: |
Technical and economic aspects in conventional and alternative agriculture: A case study on coffee. |
|
Ano de publicação: |
2003 |
|
Fonte/Imprenta: |
Food, Agriculture & Environment, Helsinki, v. 1, n. 3&4, p. 239-246, aug./dec. 2003. |
|
Idioma: |
Inglês |
|
Conteúdo: |
This paper is an attempt to answer questions from farmers and consumers about the feasibility of an alternative model for agriculture production. An alternative model should be able to revert the present environmental degradation as far as agriculture is concerned. The article is based on theoretical discussion of current literature and field experiences on coffee. From literature review two favorable factor for this model is detached: one standing market with higher prices for its assets, together with the fact that there is basically no difference between the current model and the alternative one, regarding labour needs. In the studies on coffee, it is observed the technical and economic efficiency of alternative methods for phytosanitary control, as much as it provides a quite positive result on its costs. According to local conditions, there are many alternatives to be developed. So it is necessary to develop research integrating the economic, social and ecological features, no limited to the cause-effect mechanisms. |
|
Palavras-Chave: |
Alternative agriculture; Coffee; Environments. |
|
Thesagro: |
Agricultura Alternativa; Café; Meio Ambiente. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 01699naa a2200217 a 4500
001 1621502
005 2004-05-25
008 2003 bl --- 0-- u #d
100 1 $aFIGUEIREDO, F. E. da R.
245 $aTechnical and economic aspects in conventional and alternative agriculture$bA case study on coffee.
260 $c2003
520 $aThis paper is an attempt to answer questions from farmers and consumers about the feasibility of an alternative model for agriculture production. An alternative model should be able to revert the present environmental degradation as far as agriculture is concerned. The article is based on theoretical discussion of current literature and field experiences on coffee. From literature review two favorable factor for this model is detached: one standing market with higher prices for its assets, together with the fact that there is basically no difference between the current model and the alternative one, regarding labour needs. In the studies on coffee, it is observed the technical and economic efficiency of alternative methods for phytosanitary control, as much as it provides a quite positive result on its costs. According to local conditions, there are many alternatives to be developed. So it is necessary to develop research integrating the economic, social and ecological features, no limited to the cause-effect mechanisms.
650 $aAgricultura Alternativa
650 $aCafé
650 $aMeio Ambiente
653 $aAlternative agriculture
653 $aCoffee
653 $aEnvironments
700 1 $aASSIS, R. L. de
700 1 $aREYDON, B. P.
773 $tFood, Agriculture & Environment, Helsinki$gv. 1, n. 3&4, p. 239-246, aug./dec. 2003.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Agrobiologia (CNPAB) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
