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 | Acesso ao texto completo restrito à biblioteca da Embrapa Trigo. Para informações adicionais entre em contato com cnpt.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Trigo. |
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Data corrente: |
10/12/2010 |
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Data da última atualização: |
27/08/2013 |
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Autoria: |
KIMMAGE, K. |
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Afiliação: |
KEVIN KIMMAGE, UNIVERSITY OF CAMBRIDGE. |
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Título: |
Small-scale irrigation initiatives in Nigeria: the problems of equity and sustainability. |
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Ano de publicação: |
1991 |
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Fonte/Imprenta: |
Applied Geography, v. 11, n. 1, p. 5-20, 1991. |
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Idioma: |
Inglês |
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Conteúdo: |
Because of the repeated under-performance of large-scale irrigation over the last 20–30 years it is now widely perceived as having failed to reduce food deficits or significantly increase agricultural productivity in Africa. Many aid donors and state agencies, particularly in Nigeria, have become increasingly involved in informal small-scale irrigation and there has thus been rapid technical change in the methods used to lift groundwater. Using data from recent research undertaken in northern Nigeria, the question is posed as to whether the assumptions about the sustainability of technically improved small-scale irrigation have any basis in fact. It is shown that technical sustainability problems have already arisen in northern Nigeria and that there could be serious ecological and pedological problems in the future. It is also argued that because of its inherent inequity, small-scale irrigation is not suitable for effecting broad-based agricultural and/or rural development. With new small-scale irrigation technology being introduced and promoted by forces acting upon, but outside, the traditional agricultural sector, it should not be presumed that the growth so induced will be either organic or sustainable in the longer term. |
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Palavras-Chave: |
Sustentabilidade. |
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Thesagro: |
Irrigação. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01666naa a2200145 a 4500
001 1869356
005 2013-08-27
008 1991 bl --- 0-- u #d
100 1 $aKIMMAGE, K.
245 $aSmall-scale irrigation initiatives in Nigeria$bthe problems of equity and sustainability.
260 $c1991
520 $aBecause of the repeated under-performance of large-scale irrigation over the last 20–30 years it is now widely perceived as having failed to reduce food deficits or significantly increase agricultural productivity in Africa. Many aid donors and state agencies, particularly in Nigeria, have become increasingly involved in informal small-scale irrigation and there has thus been rapid technical change in the methods used to lift groundwater. Using data from recent research undertaken in northern Nigeria, the question is posed as to whether the assumptions about the sustainability of technically improved small-scale irrigation have any basis in fact. It is shown that technical sustainability problems have already arisen in northern Nigeria and that there could be serious ecological and pedological problems in the future. It is also argued that because of its inherent inequity, small-scale irrigation is not suitable for effecting broad-based agricultural and/or rural development. With new small-scale irrigation technology being introduced and promoted by forces acting upon, but outside, the traditional agricultural sector, it should not be presumed that the growth so induced will be either organic or sustainable in the longer term.
650 $aIrrigação
653 $aSustentabilidade
773 $tApplied Geography$gv. 11, n. 1, p. 5-20, 1991.
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Embrapa Trigo (CNPT) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Mandioca e Fruticultura. Para informações adicionais entre em contato com cnpmf.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
22/11/2021 |
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Data da última atualização: |
22/11/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 2 |
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Autoria: |
LILLO, E. de; ASTUA, J. de F.; KITAJIMA, E. W.; RAMOS-GONZÁLEZ, P.; SIMONI, S.; TASSI, A. D.; VALENZANO, D. |
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Afiliação: |
ENRICO DE LILLO, Università degli Studi di Bari Aldo Moro; JULIANA DE FREITAS ASTUA, CNPMF; ELLIOT WATANABE KITAJIMA, ESALQ; PEDRO LUIS RAMOS-GONZÁLEZ, Instituto Biológico São Paulo; SAURO SIMONI, Research Centre for Plant Protection and Certification; ALINE DANIELE TASSI, Instituto Biológico São Paulo; DOMENICO VALENZANO, Università degli Studi di Bari Aldo Mor. |
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Título: |
Phytophagous mites transmitting plant viruses: update and perspectives. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Entomologia Generalis, v. 41, Issue 5, p. 439?46, 22021. |
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ISSN: |
0171-8177 |
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DOI: |
10.1127/entomologia/2021/1283 |
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Idioma: |
Inglês |
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Conteúdo: |
Plant viruses can be effectively transmitted by phytophagous mites. Many species of mites, mainly eriophyids and tenuipalpids, induce symptoms in infested plants that may be mistaken for viral diseases or may hide infections pro-duced by unidentified putative viruses. The virus-mite interplay and the multitrophic interactions with their host plants are often inadequately described and require further clarifications. Advances in biotechnological methods could enable increas-ing identification and characterization of viruses transmitted and their potential mite vectors. This review examines the state of knowledge of mites and plant-virus interactions by summarizing the strengths and weaknesses in this research field, thus paving the way for new research directions. |
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Thesagro: |
Vírus. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01432naa a2200229 a 4500
001 2136395
005 2021-11-22
008 2021 bl uuuu u00u1 u #d
022 $a0171-8177
024 7 $a10.1127/entomologia/2021/1283$2DOI
100 1 $aLILLO, E. de
245 $aPhytophagous mites transmitting plant viruses$bupdate and perspectives.$h[electronic resource]
260 $c2021
520 $aPlant viruses can be effectively transmitted by phytophagous mites. Many species of mites, mainly eriophyids and tenuipalpids, induce symptoms in infested plants that may be mistaken for viral diseases or may hide infections pro-duced by unidentified putative viruses. The virus-mite interplay and the multitrophic interactions with their host plants are often inadequately described and require further clarifications. Advances in biotechnological methods could enable increas-ing identification and characterization of viruses transmitted and their potential mite vectors. This review examines the state of knowledge of mites and plant-virus interactions by summarizing the strengths and weaknesses in this research field, thus paving the way for new research directions.
650 $aVírus
700 1 $aASTUA, J. de F.
700 1 $aKITAJIMA, E. W.
700 1 $aRAMOS-GONZÁLEZ, P.
700 1 $aSIMONI, S.
700 1 $aTASSI, A. D.
700 1 $aVALENZANO, D.
773 $tEntomologia Generalis$gv. 41, Issue 5, p. 439?46, 22021.
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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ID |
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Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
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Registro completo
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Biblioteca(s): |
Catálogo Coletivo de Periódicos Embrapa; Embrapa Amazônia Oriental; Embrapa Cerrados; Embrapa Florestas. |
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Identificador: |
7049 |
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Data corrente: |
09/05/2002 |
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Data da última atualização: |
09/05/2002 |
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Código do título: |
1800007 |
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ISSN: |
0036-9217 |
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Código CCN: |
071402-X |
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Título e Subtítulo: |
SCOTTISH FORESTRY |
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Título anterior: |
SCOTTISH FORESTRY JOURNAL |
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Entidade: |
Royal Scottish Forestry Society |
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Local de publicação: |
Edimburgh-Escocia |
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Periodicidade: |
trimestral |
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Bases onde o periódico é indexado: |
BIOLOGICAL ABSTRACTS; CHEMICAL ABSTRACTS; APPLIED CHEMISTRY AND CHEMICAL ENGINEERING SECTIONS; FORESTRY ABSTRACTS |
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Inicio de publicação: |
1947 |
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Coleções da unidade: |
Embrapa Amazônia Oriental
1960 14(1-4); 1961 15(1-4); 1962 16(1-4); 1963 17(1-4); 1964 18(1-4); 1965 19(1-4); 1966 20(1-4); 1967 21(1-4); 1968 22(1-4); 1969 23(1-3); 1976 30(1-4); 1977 31(1-4); 1979 33(1-4); 1980 34(1-4); 1981 35(1-4); 1982 36(1-4); 1983 37(1-4); 1984 38(1-4); 1985 39(1-4); 1986 40(1-4); 1987 41(1-4); 1988 42(1-4); 1989 43(1-4); 1990 44(1-4); 1991 45(1-4); 1993 47(1-4); 1994 48(1-4); 1995 49(1-4); 1996 50(1-4); 1997 51(1-4); 1998 52(1-4) !C100! 1962 16; 1963 17; 1964 18; 1965 19; 1966 20; 1967 21; 1976 30; 1979 33; 1980 34; 1981 35; 1982 36; 1983 37; 1987 41; 1990 44; 1991 45
Classificação: 634.905S11
Embrapa Cerrados
1976 30(1,4); 1977 31; 1979-90 33-44
Classificação: 634.905
Embrapa Florestas
1978 32(1-4); 1979 33(1-2); 1980 34(1-4); 1984 38(1-4); 1985 39(1-4); 1986 40(1-4); 1987 41(1-4); 1988 42(1-4); 1989 43(1-4); 1990 44(1-4); 1991 45(1-4); 1997 51(2-3) |
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