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Registro Completo |
Biblioteca(s): |
Embrapa Pantanal. |
Data corrente: |
14/06/1995 |
Data da última atualização: |
14/06/1995 |
Autoria: |
BRAGA, J. M.; RAMOS, G. M. de. |
Título: |
Competicao por potassio entre gramineas e leguminosas consorciadas, em funcao da capacidade de troca cationica das raizes. |
Ano de publicação: |
1978 |
Fonte/Imprenta: |
Revista Ceres, Vicosa, v.25, n.140, p.335-344, jul./ago. 1978. |
Idioma: |
Português |
Conteúdo: |
Estudou-se, por meio de um ensaio em casa-de-vegetacao, a influencia da capacidade de troca cationica das raizes sobre a competicao quimica de gramineas e leguminosas consorciadas. Usou-se um esquema fatorial 3 x 3 x 3, onde os fatores foram as gramineas capim-coloniao (Panicum maximum Jacq.), capim-buffel (Cencrus ciliaris L. var.. Gayndah) e capim-gordura (melinis minutiflora Beauv.), e as leguminosas centrosema (Centrosema pubescens Benth), calopogonio (Calopogonium mucunoides Desv.) e soja perene (Glycine withtii C.V. Cooper) e 3 niveis de potassio: 0,120 e 240 ppm, inteiramente ao acaso, com 3 repeticoes. Usaram-se vasos com 2 kg de solo, onde foram cultivadas 3 plantas de gramineas e 3 de leguminosas. Quarenta dias apos a germinacao, colheu-se a parte aerea das plantas, separando-se as gramineas das leguminosas, para analise de potassio, de calcio e de magnesio. Os resultados obtidos permitem concluir que o capim-gordura, com capacidade de troca catonica das raizes mais alta entre as gramineas, revelou-se como a menos competitiva por potassio. A centrosema, com menor capacidade de troca cationica das raizes entre as leguminosdas, reteve-se menores proporcoes de potassio. O aumento das doses de potassio aplicadas no solo aumentou, de modo geral, os teores de potassio na parte aerea de todas as especies estudadas. Por outro lado, os teored de calcio e de magnesio diminuiram. |
Palavras-Chave: |
Grass; Root; Troca cationiuca. |
Thesagro: |
Gramínea; Leguminosa; Potássio; Raiz. |
Thesaurus Nal: |
cation exchange; legumes; potassium. |
Categoria do assunto: |
-- |
Marc: |
LEADER 02098naa a2200253 a 4500 001 1784566 005 1995-06-14 008 1978 bl --- 0-- u #d 100 1 $aBRAGA, J. M. 245 $aCompeticao por potassio entre gramineas e leguminosas consorciadas, em funcao da capacidade de troca cationica das raizes. 260 $c1978 520 $aEstudou-se, por meio de um ensaio em casa-de-vegetacao, a influencia da capacidade de troca cationica das raizes sobre a competicao quimica de gramineas e leguminosas consorciadas. Usou-se um esquema fatorial 3 x 3 x 3, onde os fatores foram as gramineas capim-coloniao (Panicum maximum Jacq.), capim-buffel (Cencrus ciliaris L. var.. Gayndah) e capim-gordura (melinis minutiflora Beauv.), e as leguminosas centrosema (Centrosema pubescens Benth), calopogonio (Calopogonium mucunoides Desv.) e soja perene (Glycine withtii C.V. Cooper) e 3 niveis de potassio: 0,120 e 240 ppm, inteiramente ao acaso, com 3 repeticoes. Usaram-se vasos com 2 kg de solo, onde foram cultivadas 3 plantas de gramineas e 3 de leguminosas. Quarenta dias apos a germinacao, colheu-se a parte aerea das plantas, separando-se as gramineas das leguminosas, para analise de potassio, de calcio e de magnesio. Os resultados obtidos permitem concluir que o capim-gordura, com capacidade de troca catonica das raizes mais alta entre as gramineas, revelou-se como a menos competitiva por potassio. A centrosema, com menor capacidade de troca cationica das raizes entre as leguminosdas, reteve-se menores proporcoes de potassio. O aumento das doses de potassio aplicadas no solo aumentou, de modo geral, os teores de potassio na parte aerea de todas as especies estudadas. Por outro lado, os teored de calcio e de magnesio diminuiram. 650 $acation exchange 650 $alegumes 650 $apotassium 650 $aGramínea 650 $aLeguminosa 650 $aPotássio 650 $aRaiz 653 $aGrass 653 $aRoot 653 $aTroca cationiuca 700 1 $aRAMOS, G. M. de 773 $tRevista Ceres, Vicosa$gv.25, n.140, p.335-344, jul./ago. 1978.
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Embrapa Pantanal (CPAP) |
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Registro Completo
Biblioteca(s): |
Embrapa Clima Temperado; Embrapa Trigo. |
Data corrente: |
18/09/2023 |
Data da última atualização: |
19/09/2023 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 2 |
Autoria: |
BARRO, J. P.; SANTANA, F. M.; TIBOLA, C. S.; MACHADO, F. J.; SCHIPANSKI, C. A.; CHAGAS, D. F.; GUTERRES, C. W.; CASAROTTO, G.; CAPITANIO, C. G.; DALLAGNOL, L. J.; KUHNEM, P.; FEKSA, H. R.; VENANCIO, W. S.; DEL PONTE, E. M. |
Afiliação: |
JHONATAN PAULO BARRO, UNIVERSIDADE FEDERAL DE VIÇOSA; FLAVIO MARTINS SANTANA, CPACT; CASIANE SALETE TIBOLA, CNPT; FRANKLIN JACKSON MACHADO; CARLOS ANDRÉ SCHIPANSKI; DÉBORA FONSECA CHAGAS, G12 AGRO PESQUISA E CONSULTORIA AGRONÔMICA; CAROLINE WESP GUTERRES, AGRONÔMICA - LABORATÓRIO DE DIAGNÓSTICO FITOSSANITÁRIO E CONSULTORIA; GABRIELE CASAROTTO, 3TENTOS AGROINDUSTRIAL SA; CASSIO GUILHERME CAPITANIO, 3TENTOS AGROINDUSTRIAL SA; LEANDRO JOSE DALLAGNOL, UNIVERSIDADE FEDERAL DE PELOTAS; PAULO KUHNEM, BIOTRIGO GENÉTICA LTDA.; HERALDO ROSA FEKSA, FUNDAÇÃO AGRÁRIA DE PESQUISA AGROPECUÁRIA; WILSON STORY VENANCIO, ESTAÇÃO EXPERIMENTAL AGRÍCOLA CAMPOS GERAIS; EMERSON MEDEIROS DEL PONTE, UNIVERSIDADE FEDERAL DE VIÇOSA. |
Título: |
Comparison of single- or multi-active ingredient fungicides for controlling Fusarium head blight and deoxynivalenol in Brazilian wheat. |
Ano de publicação: |
2023 |
Fonte/Imprenta: |
Crop Protection, v. 174, 106402, Dec. 2023. |
Páginas: |
7 p. |
ISSN: |
0261-2194 |
Idioma: |
Inglês |
Conteúdo: |
In this study, we gathered data on Fusarium head blight (FHB) severity, deoxynivalenol (DON), and wheat yields from 19 cooperative fungicide trials conducted in Southern Brazil over five growing seasons (2017?2021). We tested three premixes of Quinone Outside Inhibitors (QoIs) + demethylation inhibitors (DMIs) (PYRAclostrobin + METConazole, TEBUconazole + TriFLoXystrobin, and TriFLoXystrobin + PROThioconazole), one triple premix of QoI + DMI + succinate dehydrogenase inhibitors (SDHI) (TriFLoXystrobin + PROThioconazole + BIXaFen), and two single active ingredients (METC [DMI] and CARBendazim [benzimidazole; MBC]) applied three times, beginning at the flowering stage and continuing every 7?12 days. We fitted a network meta-analysis model to the log of the means of FHB index and DON content data and to the non-transformed mean yield for each treatment, including the untreated control. Disease (FHB index) reduction estimates ranged from 41.5% (TEBU + TFLX) to 62.8% (METC); the latter did not differ from PYRA + METC (56.1%). Likewise, the mean estimates of percent DON reduction were higher for METC (65.1%) and PYRA + METC (58.3%). These two treatments were followed by TEBU + TFLX (50%), which was not statistically different from CARB (48%) and TFLX + PROT (45.2%), but differed from TFLX + PROT + BIXF (39.3%). Lastly, the yield response was higher for TFLX + PROT + BIXF (643 kg/ha), which differed from all other treatments, including METC (505.9 kg/ha), PYRA + METC (477.8 kg/ha), TFLX + PROT (455.3 kg/ha), CARB (453.2 kg/ha), and TEBU + TFLX (403.4 kg/ha). The results of this meta-analysis are crucial for choosing fungicides when planning programs aimed at reducing both FHB and DON levels in wheat. MenosIn this study, we gathered data on Fusarium head blight (FHB) severity, deoxynivalenol (DON), and wheat yields from 19 cooperative fungicide trials conducted in Southern Brazil over five growing seasons (2017?2021). We tested three premixes of Quinone Outside Inhibitors (QoIs) + demethylation inhibitors (DMIs) (PYRAclostrobin + METConazole, TEBUconazole + TriFLoXystrobin, and TriFLoXystrobin + PROThioconazole), one triple premix of QoI + DMI + succinate dehydrogenase inhibitors (SDHI) (TriFLoXystrobin + PROThioconazole + BIXaFen), and two single active ingredients (METC [DMI] and CARBendazim [benzimidazole; MBC]) applied three times, beginning at the flowering stage and continuing every 7?12 days. We fitted a network meta-analysis model to the log of the means of FHB index and DON content data and to the non-transformed mean yield for each treatment, including the untreated control. Disease (FHB index) reduction estimates ranged from 41.5% (TEBU + TFLX) to 62.8% (METC); the latter did not differ from PYRA + METC (56.1%). Likewise, the mean estimates of percent DON reduction were higher for METC (65.1%) and PYRA + METC (58.3%). These two treatments were followed by TEBU + TFLX (50%), which was not statistically different from CARB (48%) and TFLX + PROT (45.2%), but differed from TFLX + PROT + BIXF (39.3%). Lastly, the yield response was higher for TFLX + PROT + BIXF (643 kg/ha), which differed from all other treatments, including METC (505.9 kg/ha), PYRA + METC (477.8 kg/ha),... Mostrar Tudo |
Palavras-Chave: |
Desoxinivalenol. |
Thesagro: |
Fungicida; Fusarium Graminearum; Trigo. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1156741/1/Artigo-Comparison-of-single.pdf
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Marc: |
LEADER 02715naa a2200349 a 4500 001 2156741 005 2023-09-19 008 2023 bl uuuu u00u1 u #d 022 $a0261-2194 100 1 $aBARRO, J. P. 245 $aComparison of single- or multi-active ingredient fungicides for controlling Fusarium head blight and deoxynivalenol in Brazilian wheat.$h[electronic resource] 260 $c2023 300 $a7 p. 520 $aIn this study, we gathered data on Fusarium head blight (FHB) severity, deoxynivalenol (DON), and wheat yields from 19 cooperative fungicide trials conducted in Southern Brazil over five growing seasons (2017?2021). We tested three premixes of Quinone Outside Inhibitors (QoIs) + demethylation inhibitors (DMIs) (PYRAclostrobin + METConazole, TEBUconazole + TriFLoXystrobin, and TriFLoXystrobin + PROThioconazole), one triple premix of QoI + DMI + succinate dehydrogenase inhibitors (SDHI) (TriFLoXystrobin + PROThioconazole + BIXaFen), and two single active ingredients (METC [DMI] and CARBendazim [benzimidazole; MBC]) applied three times, beginning at the flowering stage and continuing every 7?12 days. We fitted a network meta-analysis model to the log of the means of FHB index and DON content data and to the non-transformed mean yield for each treatment, including the untreated control. Disease (FHB index) reduction estimates ranged from 41.5% (TEBU + TFLX) to 62.8% (METC); the latter did not differ from PYRA + METC (56.1%). Likewise, the mean estimates of percent DON reduction were higher for METC (65.1%) and PYRA + METC (58.3%). These two treatments were followed by TEBU + TFLX (50%), which was not statistically different from CARB (48%) and TFLX + PROT (45.2%), but differed from TFLX + PROT + BIXF (39.3%). Lastly, the yield response was higher for TFLX + PROT + BIXF (643 kg/ha), which differed from all other treatments, including METC (505.9 kg/ha), PYRA + METC (477.8 kg/ha), TFLX + PROT (455.3 kg/ha), CARB (453.2 kg/ha), and TEBU + TFLX (403.4 kg/ha). The results of this meta-analysis are crucial for choosing fungicides when planning programs aimed at reducing both FHB and DON levels in wheat. 650 $aFungicida 650 $aFusarium Graminearum 650 $aTrigo 653 $aDesoxinivalenol 700 1 $aSANTANA, F. M. 700 1 $aTIBOLA, C. S. 700 1 $aMACHADO, F. J. 700 1 $aSCHIPANSKI, C. A. 700 1 $aCHAGAS, D. F. 700 1 $aGUTERRES, C. W. 700 1 $aCASAROTTO, G. 700 1 $aCAPITANIO, C. G. 700 1 $aDALLAGNOL, L. J. 700 1 $aKUHNEM, P. 700 1 $aFEKSA, H. R. 700 1 $aVENANCIO, W. S. 700 1 $aDEL PONTE, E. M. 773 $tCrop Protection$gv. 174, 106402, Dec. 2023.
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