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Registro Completo |
Biblioteca(s): |
Embrapa Soja. |
Data corrente: |
25/04/1996 |
Data da última atualização: |
03/11/2005 |
Autoria: |
KIM, D. G.; RIGGS, R. D. |
Título: |
Biological control. |
Ano de publicação: |
1992 |
Fonte/Imprenta: |
In: RIGGS, R.D.; WRATHER, J.A., ed Biology and management of the soybean cyst nematode. St. Paul: APS Press, 1992. |
Páginas: |
p.133-142. |
Idioma: |
Inglês |
Conteúdo: |
About 90 species of fungi have been isolated from one stage or another of soybean-cyst-nematode in the United States. Most of them are not parasites, and few have been studied in detail. To date no organism has been shown to be efficacious and economical in field studies. Nematode suppressive soil is a good to look for new biological control agents. Egg parasitic fungi should be isolated from surface-disinfested eggs rather than whole cysts. Obligate parasites are found by careful examination because they do not grow on artificial media. For practical application, fungal parasites should be culturable on artificial media until methods are available to culture obligate fungi. The characteristics of good biological control agents for SCN are: 1) highly parasitic on SCN (over 60% in Petri dish agar block tests), 2) host range primarily of nematode species, but not pathogenic to crop plants or higher animals, 3) grow at suitable pH and temperature ranges, 4) grow on artificial media, 5) identifiable and with mode of action known, and 6) can be formulated in a usable form. The fungus should be tested in pots and in the fields and competition with other soil microorganisms should be considered. New approaches, such as combinations of multiple agents or improvement of formulations, have considerable potential for biological control of SCN. |
Palavras-Chave: |
Nematoide do cisto; Soybean cyst nematode. |
Thesagro: |
Controle Biológico; Heterodera Glycines; Soja. |
Thesaurus Nal: |
biological control. |
Categoria do assunto: |
-- |
Marc: |
LEADER 01969naa a2200217 a 4500 001 1456002 005 2005-11-03 008 1992 bl uuuu u00u1 u #d 100 1 $aKIM, D. G. 245 $aBiological control. 260 $c1992 300 $ap.133-142. 520 $aAbout 90 species of fungi have been isolated from one stage or another of soybean-cyst-nematode in the United States. Most of them are not parasites, and few have been studied in detail. To date no organism has been shown to be efficacious and economical in field studies. Nematode suppressive soil is a good to look for new biological control agents. Egg parasitic fungi should be isolated from surface-disinfested eggs rather than whole cysts. Obligate parasites are found by careful examination because they do not grow on artificial media. For practical application, fungal parasites should be culturable on artificial media until methods are available to culture obligate fungi. The characteristics of good biological control agents for SCN are: 1) highly parasitic on SCN (over 60% in Petri dish agar block tests), 2) host range primarily of nematode species, but not pathogenic to crop plants or higher animals, 3) grow at suitable pH and temperature ranges, 4) grow on artificial media, 5) identifiable and with mode of action known, and 6) can be formulated in a usable form. The fungus should be tested in pots and in the fields and competition with other soil microorganisms should be considered. New approaches, such as combinations of multiple agents or improvement of formulations, have considerable potential for biological control of SCN. 650 $abiological control 650 $aControle Biológico 650 $aHeterodera Glycines 650 $aSoja 653 $aNematoide do cisto 653 $aSoybean cyst nematode 700 1 $aRIGGS, R. D. 773 $tIn: RIGGS, R.D.; WRATHER, J.A., ed Biology and management of the soybean cyst nematode. St. Paul: APS Press, 1992.
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Registro original: |
Embrapa Soja (CNPSO) |
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Registro Completo
Biblioteca(s): |
Embrapa Rondônia. |
Data corrente: |
24/02/2022 |
Data da última atualização: |
24/02/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
B - 1 |
Autoria: |
SILVA, F. R. F. da; SALMAN, A. K. D.; CRUZ, P. G. da; PORTO, M. O.; CAVALI, J.; FERREIRA, E.; SOUZA, E. C. de; CARVALHO, G. A. de. |
Afiliação: |
ANA KARINA DIAS SALMAN, CPAF-RO; PEDRO GOMES DA CRUZ, CPAF-RO. |
Título: |
Bromatological composition and ruminal degradability of Xaraés palisade grass under grazing in integrated systems. |
Ano de publicação: |
2021 |
Fonte/Imprenta: |
Acta Scientiarum. Animal Sciences, v. 43, e53004, 2021. |
ISSN: |
1807-8672 |
DOI: |
10.4025/actascianimsci.v43i1.53004 |
Idioma: |
Inglês |
Conteúdo: |
To evaluate the bromatological composition and ruminal degradability of dry matter (DM), crude protein (CP), neutral detergent fiber (NDF) and acid detergent fiber (ADF) of Xaraés palisade grass (Urochloa brizantha ?Xaraes? syn Brachiaria brizantha) under grazing in integrated crop, livestock (ICL), and forest (ICLF) systems, we conducted an in situ degradability trial in randomized blocks with three nonlactating 3/4 Gyr × 1/4 Holstein cows, provided with ruminal cannula. The management of Xaraés palisade grass was similar in both systems, differing only regarding shading in the ICLF system provided by eucalyptus trees (average 65% crown cover). Grass samples were incubated for 0, 3, 6, 9, 12, 24, 36, 48, 72, and 96 hours. Considering the passage rate 2% h-1, the Xaraés palisade grass of ICL system had greater NDF effective degradability in relation to ICLF (46.38 vs 44.98%). However, the palisade grass CP potential degradability was greater in the ICLF than in the ICL system (68.92% vs. 65.40%). The presence of trees in the pasture has effect on nutritional traits of the Xaraés palisade grass, increasing its protein content and degradability and reducing its fiber degradability. |
Palavras-Chave: |
Agricultural integration; ICLF; In situ degradation. |
Thesaurus NAL: |
Dairy cattle. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/231883/1/Silva-et-al.-2021.pdf
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Marc: |
LEADER 02050naa a2200277 a 4500 001 2140369 005 2022-02-24 008 2021 bl uuuu u00u1 u #d 022 $a1807-8672 024 7 $a10.4025/actascianimsci.v43i1.53004$2DOI 100 1 $aSILVA, F. R. F. da 245 $aBromatological composition and ruminal degradability of Xaraés palisade grass under grazing in integrated systems.$h[electronic resource] 260 $c2021 520 $aTo evaluate the bromatological composition and ruminal degradability of dry matter (DM), crude protein (CP), neutral detergent fiber (NDF) and acid detergent fiber (ADF) of Xaraés palisade grass (Urochloa brizantha ?Xaraes? syn Brachiaria brizantha) under grazing in integrated crop, livestock (ICL), and forest (ICLF) systems, we conducted an in situ degradability trial in randomized blocks with three nonlactating 3/4 Gyr × 1/4 Holstein cows, provided with ruminal cannula. The management of Xaraés palisade grass was similar in both systems, differing only regarding shading in the ICLF system provided by eucalyptus trees (average 65% crown cover). Grass samples were incubated for 0, 3, 6, 9, 12, 24, 36, 48, 72, and 96 hours. Considering the passage rate 2% h-1, the Xaraés palisade grass of ICL system had greater NDF effective degradability in relation to ICLF (46.38 vs 44.98%). However, the palisade grass CP potential degradability was greater in the ICLF than in the ICL system (68.92% vs. 65.40%). The presence of trees in the pasture has effect on nutritional traits of the Xaraés palisade grass, increasing its protein content and degradability and reducing its fiber degradability. 650 $aDairy cattle 653 $aAgricultural integration 653 $aICLF 653 $aIn situ degradation 700 1 $aSALMAN, A. K. D. 700 1 $aCRUZ, P. G. da 700 1 $aPORTO, M. O. 700 1 $aCAVALI, J. 700 1 $aFERREIRA, E. 700 1 $aSOUZA, E. C. de 700 1 $aCARVALHO, G. A. de 773 $tActa Scientiarum. Animal Sciences$gv. 43, e53004, 2021.
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