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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
28/10/1993 |
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Data da última atualização: |
28/10/1993 |
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Autoria: |
DOLL, J. D. |
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Afiliação: |
Extension Specialist in Weed Science, University of Wisconsin, Dept. of Agronomy, Madison, WI 53706, USA. |
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Título: |
Weeds: an economic problem in cassava. |
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Ano de publicação: |
1978 |
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Fonte/Imprenta: |
Cali, Colombia: CIAT, 1978. |
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Páginas: |
p.65-69 |
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Série: |
SERIES, CE-14 |
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Idioma: |
Inglês |
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Conteúdo: |
Normally, the highest cost in cassava production are for labor, mostly for weeding operations. Although yield losses due to weeds are not so obvious as those caused by insects or diseases, they may reach 25% after 30 days and 50% after 60 days. In Colombia and in other countries with similar labor conditions, cassava growers can easily afford to weed their fields 4 or more times, the first 3-4 mo being the most critical for keeping cassava free of weed competition. Some control measures suggested are (1) integration of chemical and manual control, which eliminates early weed competition and gives higher yields, (2) increased plant populations, (3) mixed cropping, which may also reduce weeding inputs. The socioeconomic advantages and disadvantages of these measures are discussed. The need for people trained in weed science is stressed; research should be done on allelopathy, mixed cropping systems, and on weeds of economic importance in the tropics, especially in Latin America. |
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Palavras-Chave: |
Congresso. |
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Thesagro: |
Manihot Esculenta; Manihot Glaziovii. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01426naa a2200181 a 4500
001 1644320
005 1993-10-28
008 1978 bl uuuu u00u1 u #d
100 1 $aDOLL, J. D.
245 $aWeeds$ban economic problem in cassava.
260 $c1978
300 $ap.65-69
490 $aSERIES, CE-14
520 $aNormally, the highest cost in cassava production are for labor, mostly for weeding operations. Although yield losses due to weeds are not so obvious as those caused by insects or diseases, they may reach 25% after 30 days and 50% after 60 days. In Colombia and in other countries with similar labor conditions, cassava growers can easily afford to weed their fields 4 or more times, the first 3-4 mo being the most critical for keeping cassava free of weed competition. Some control measures suggested are (1) integration of chemical and manual control, which eliminates early weed competition and gives higher yields, (2) increased plant populations, (3) mixed cropping, which may also reduce weeding inputs. The socioeconomic advantages and disadvantages of these measures are discussed. The need for people trained in weed science is stressed; research should be done on allelopathy, mixed cropping systems, and on weeds of economic importance in the tropics, especially in Latin America.
650 $aManihot Esculenta
650 $aManihot Glaziovii
653 $aCongresso
773 $tCali, Colombia: CIAT, 1978.
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Florestas. Para informações adicionais entre em contato com cnpf.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
04/08/1994 |
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Data da última atualização: |
06/06/2014 |
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Autoria: |
CARVALHO, P. E. R. |
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Afiliação: |
Pesquisador da Embrapa Florestas. |
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Título: |
Comportamento de essências florestais e exóticas em dois locais do Estado do Paraná. |
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Ano de publicação: |
1982 |
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Fonte/Imprenta: |
Silvicultura, São Paulo, v. 7, n. 23, p. 41, mar./abr. 1982. |
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Idioma: |
Português |
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Palavras-Chave: |
Essências. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00387naa a2200121 a 4500
001 1288047
005 2014-06-06
008 1982 bl uuuu u00u1 u #d
100 1 $aCARVALHO, P. E. R.
245 $aComportamento de essências florestais e exóticas em dois locais do Estado do Paraná.
260 $c1982
653 $aEssências
773 $tSilvicultura, São Paulo$gv. 7, n. 23, p. 41, mar./abr. 1982.
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Registro original: |
Embrapa Florestas (CNPF) |
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