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Registros recuperados: 31
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Avaliação de genótipos de mandioca em diferentes épocas de colheita no Estado do Acre. Repositório Alice
MENDONÇA, H.A. de; MOURA, G. de M.; CUNHA, E.T..
No Estado do Acre, a mandioca tem grande importância econômica e social, constituindo-se num dos principais produtos básicos da alimentação da população, principalmente na forma de farinha, mas com grande potencial também para o consumo in natura. O objetivo deste trabalho foi avaliar genótipos de mandioca em diferentes épocas de colheita no Estado do Acre. Foram avaliados dez genótipos de mandioca em quatro épocas de colheita utilizando o delineamento de blocos casualizados com quatro repetições, em esquema de parcelas subdivididas, sendo as épocas as parcelas e os genótipos as subparcelas, nas safras 1999/2000 e 2000/2001. Os genótipos MD-33 e Pão apresentaram alto rendimento de raízes e resistência à podridão radicular; o primeiro é indicado para a...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Manihot esculenta; Podridão da raiz; Raiz; Produto fresco; Produto a base de amido; Rendimento; Root rots; Roots; Fresh products; Starch products; Yields.
Ano: 2003 URL: http://www.alice.cnptia.embrapa.br/handle/doc/109107
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Characterization of a Basidiomycete Fungus from Stored Sugar Beet Roots NWISRL
Toda, T; Strausbaugh, C.A.; Rodriguez-Carres, M; Cubeta, M.A..
Eighteen isolates sampled from sugar beet roots associated with an unknown etiology were characterized based on observations of morphological characters, hyphal growth at temperatures ranging from 4 to 28 C, production of phenol oxidases, and sequence analysis of internal transcribed spacer (ITS) and large subunit (LSU) regions of the ribosomal DNA (rDNA). The isolates did not produce asexual or sexual spores, had binucleate hyphal cells with clamp connections, grew from 4 to 22 C with and estimated optimal growth at 14.5 C, and formed a dark brown pigment on potato dextrose or malt extract agar amended with 0.5% tannic acid. Color changes observed when solutions of gum guiac, guiacol, and syringaldzine were applied directly to mycelium grown on these...
Tipo: Article Palavras-chave: Root rots; Storage; Sugarbeet; Fungi.
Ano: 2012 URL: http://eprints.nwisrl.ars.usda.gov/1443/1/1408.pdf
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Controle integrado da podridão radicular da mandioca no estado do Pará. Infoteca-e
CARDOSO, E. M. R.; KATO, M. do S. A.; POLTRONIERI, L. S.; FUKUDA, C.; LOZANO, J. C.; MELO, M. I. S..
1992
Tipo: Séries anteriores (INFOTECA-E) Palavras-chave: Mandioca; Controle de doença; Podridão da raiz; Phytophthora; Fusarium; Cassava; Disease control; Root rots.
Ano: 1992 URL: http://www.infoteca.cnptia.embrapa.br/handle/doc/374189
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Cultivares de mandioca com resistência à podridão mole das raízes no Estado do Pará. Repositório Alice
POLTRONIERI, L. S.; TRINDADE, D. R.; CARDOSO, E. M. R..
1995
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Mandioca; Resistência a doença; Podridão da raiz; Phytophthora; Cassava; Disease resistance; Root rots.
Ano: 1995 URL: http://www.alice.cnptia.embrapa.br/handle/doc/397898
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Disease notes - Bacterial root rot NWISRL
Neher, Oliver T.; Strausbaugh, C.A..
Bacterial root rot initiated by lactic acid bacteria, particularly Leuconostoc, occurs every year in Idaho sugarbeet fields. Hot fall weather seems to make the problem worse. Although Leuconostoc initiates the rot, other bacteria and yeast frequently invade the tissue as well. The acetic acid bacteria, particularly Gluconobacter, are what give the rotted tissue a fermented vinegar-like smell. The bacteria gain entry into the root through wounds caused by rodents, growth cracks, and fungal lesions such as those associated with Rhizoctonia root rot. No definite management practices for bacterial root rot in sugarbeet have been established, but minimizing problems with rodents and fungal root rots would be advisable.
Tipo: Article Palavras-chave: Root rots; Sugarbeet.
Ano: 2013 URL: http://eprints.nwisrl.ars.usda.gov/1530/1/1452.pdf
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DNA Fingerprinting of Sugarbeet Varieties to Track Root Rot. 2010 NWISRL
Eujayl, Imad A.; Strausbaugh, C.A..
The sugar beet industry is continuously undertaking major efforts to reduce postharvest sucrose losses. In Idaho sugarbeet roots may be stored indoors or outdoors for up to five months. Sugarbeet variety genetic make-up, pre-harvest field conditions, harvest practices, and post-harvest storage conditions can affect storability significantly. Physical root conditions and root health before deliv- ery to the pile contribute to the magnitude of sucrose losses. Growers chose different varieties for a certain season and may plant more than one variety in a field. This practice renders it difficult to collect information on the exact location of varieties in the field and storage piles. Additionally, it’s a daunting task to physically tag...
Tipo: Article Palavras-chave: Root rots; Sugarbeet; Genetics.
Ano: 2010 URL: http://eprints.nwisrl.ars.usda.gov/1361/1/1338.pdf
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Efeito da frequencia e altura de poda na produtividade de raizes e parte aerea em mandioca. Repositório Alice
MOURA, G. de M.; COSTA, N. de L..
O objetivo do presente trabalho foi avaliar o efeito da altura e freqüência de poda, sobre a produtividade de parte aérea e de raízes em cinco cultivares de mandioca. Foram avaliadas duas alturas (0,50 m e 1,00 m) e três freqüências de poda (aos 6, 12 e 18 meses, aos 12 e 18 meses e aos 18 meses), envolvendo as cultivares Paxiubão, Pretinha, Paxiúba II, Metro III, e Pirarucu. A produção de matéria verde e a porcentagem de folhas foram inversamente proporcionais à idade das plantas. Com exceção da cultivar Paxiubão, os rendimentos de raízes foram reduzidos com o aumento da freqüência de podas. O rendimento de raízes foi reduzido tanto pela altura como pela freqüência de poda, enquanto o rendimento de matéria verde foi influenciado pela freqüência de poda. A...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Manihot esculenta; Materia seca; Podridao da raiz; Acido cianidrico; Dry matter; Root rots; Hydrocyanic acid.
Ano: 2001 URL: http://www.alice.cnptia.embrapa.br/handle/doc/103966
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Evaluation of Fungicides as Root Dips for the Control of Root Rot in Storage, 2009 NWISRL
Neher, Oliver T.; Strausbaugh, C.A..
Root rot in storage can lead to considerable sucrose losses in storage and adversely affect factory processing as well. The use of fungicide treatments applied to the root surface prior to storage were investigated to determine if they could reduce storage rots caused by Botrytis sp., Penicillium sp., and Athelia sp. Roots of the sugar beet cultivar B-5 were produced using standard cultural practices. At harvest eight roots were placed in a mesh onion bags to establish experimental units. The study included nine fungicide treatments (applied as a root dip) and a non-treated check arranged in a randomized complete block design with four replications. Roots were then placed on top of an indoor commercial sugar beet pile and evaluated four times for root rot...
Tipo: Article Palavras-chave: Storage; Root rots; Sugarbeet.
Ano: 2010 URL: http://eprints.nwisrl.ars.usda.gov/1402/1/1372.pdf
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Evaluation of sugar beet germplasm for rhizomania and storage rot resistance in Idaho, 2012 NWISRL
Eujayl, Imad A.; Strausbaugh, C.A..
Rhizomania in the field and fungal root rot in storage can both lead to significant sucrose losses in sugar beet roots. In an effort to reduce these losses, sugarbeet germplasm developed by the USDA-ARS Kimberly sugarbeet program was evaluated for resistance to both these disease problems. Nine sugarbeet lines and four check cultivars were arranged in a randomized complete block design with six replications and grown in a field known to be infested with Beet necrotic yellow vein virus (BNYVV), the causal agent of rhizomania. The plants were evaluated for foliar symptoms in July, August, and September. Plots were harvested in October, roots were evaluated for rhizomania root symptoms, and roots from each plot were also placed in a commercial indoor storage...
Tipo: Article Palavras-chave: Rhizomania; Root rots; Storage; Sugarbeet.
Ano: 2013 URL: http://eprints.nwisrl.ars.usda.gov/1510/1/1474.pdf
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Experimental sugar beet cultivars evaluated for resistance to rhizomania and storability in Idaho, 2010 NWISRL
Strausbaugh, C.A.; Eujayl, Imad A.; Rearick, E.; Foote, P..
Twenty-seven experimental sugar beet cultivars and five commercial check cultivars were evaluated in a sprinkler-irrigated sugar beet field near Kimberly, ID where sugar beet were grown in 2009. The field trial was conducted in a field that contained Portneuf silt loam soil and relied on natural infection for rhizomania development. The plots were planted on 26 Apr 10 to a density of 142,560 seeds/A, and thinned to 47,520 plants/A on 12 Jun. Plots were four rows (22-in. row spacing) and 24 ft long. The experimental design was a randomized complete block design with four replications per cultivar. The crop was managed according to standard cultural practices. The plants were mechanically topped and the center two rows were collected with a mechanical...
Tipo: Article Palavras-chave: Rhizomania; Root rots; Storage; Sugarbeet.
Ano: 2011 URL: http://eprints.nwisrl.ars.usda.gov/1493/1/1457.pdf
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Ft. Collins sugar beet germplasm evaluated for rhizomania and storage rot resistance in Idaho, 2012 NWISRL
Strausbaugh, C.A.; Panella, Leonard W..
Rhizomania caused by the Beet necrotic yellow vein virus (BNYVV) is a worldwide problem that can lead to loss of tonnage and lower percent sucrose in the field. BNYVV can also reduce the storability of roots. To identify germplasm with resistance to these problems, 18 sugarbeet germplasm lines developed by the USDA-ARS Ft. Collins sugarbeet program and four check cultivars were screened in a field experiment arranged in a randomized complete block design with 6 replications. During the growing season plants were evaluated for foliar rhizomania symptoms. At harvest on 4 October 2012, roots were evaluated for rhizomania symptoms and then placed into an indoor commercial sugarbeet storage building in Paul, ID. Foliar symptoms ranged from 0% for resistant...
Tipo: Article Palavras-chave: Rhizomania; Root rots; Storage; Sugarbeet.
Ano: 2013 URL: http://eprints.nwisrl.ars.usda.gov/1509/1/1472.pdf
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Ft. Collins sugar beet germplasm evaluated for rhizomania and storage rot resistance in Idaho, 2012 NWISRL
Strausbaugh, C.A.; Panella, Leonard W..
Rhizomania caused by the Beet necrotic yellow vein virus (BNYVV) is a worldwide problem that can lead to loss of tonnage and lower percent sucrose in the field. BNYVV can also reduce the storability of roots. To identify germplasm with resistance to these problems, 18 sugarbeet germplasm lines developed by the USDA-ARS Ft. Collins sugarbeet program and four check cultivars were screened in a field experiment arranged in a randomized complete block design with 6 replications. During the growing season plants were evaluated for foliar rhizomania symptoms. At harvest on 4 October 2012, roots were evaluated for rhizomania symptoms and then placed into an indoor commercial sugarbeet storage building in Paul, ID. Foliar symptoms ranged from 0% for resistant...
Tipo: Article Palavras-chave: Rhizomania; Root rots; Storage; Sugarbeet.
Ano: 2013 URL: http://eprints.nwisrl.ars.usda.gov/1561/1/1517.pdf
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Influence of harvest timing, fungicides, and Beet Necrotic Yellow Vein Virus on sugar beet storage NWISRL
Strausbaugh, C.A.; Neher, Oliver T.; Rearick, E.; Eujayl, Imad A..
Root rots in sugar beet storage can lead to million dollar losses because of reduced sucrose recovery. Thus, studies were conducted to establish better chemical control options and a better understanding of the fungi involved in the rot complex. A water check and three fungicides (Mertect, Propulse, and Stadium) were investigated for their ability to control fungal rot on sugar beet roots held in long term storage during both the 2012 and 2013 storage seasons. At the end of September into October, roots were collected on five subsequent weeks, treated, and placed on top of a commercial indoor storage pile until early February. Both Propulse and Stadium performed well, by reducing fungal growth and rot on roots versus the check by an average of 84 to...
Tipo: Article Palavras-chave: Root rots; Storage; Sugarbeet.
Ano: 2015 URL: http://eprints.nwisrl.ars.usda.gov/1607/1/1565.pdf
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Influence of Rhizoctonia-bacterial Root Rot Complex on Storability of Sugarbeet NWISRL
Strausbaugh, C.A.; Rearick, E.; Eujayl, Imad A.; Foote, P..
The Rhizoctonia-bacterial root rot complex can lead to yield loss in the field but may also lead to problems with sucrose loss in storage. Thus, studies were conducted to investigate if placing sugarbeet roots suffering from root rot together with healthy roots could compromise the ability of the healthy roots to retain sucrose. Over a three year period, root samples from three commercial cultivars were compared in storage as a healthy (eight healthy roots) or rotted (eight healthy roots + one rotted root) treatment inside an outdoor storage pile. The experiment was arranged as a split block (healthy in one half of block and rotted in the other) with the whole blocks arranged in a randomized complete block design with four replications. Samples were...
Tipo: Article Palavras-chave: Root rots; Sugarbeet; Bacteria.
Ano: 2011 URL: http://eprints.nwisrl.ars.usda.gov/1484/1/1406.pdf
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Influence of sugarbeet tillage systems on rhizoctonia-bacterial root rot complex NWISRL
Strausbaugh, C.A.; Eujayl, Imad A..
The Rhizoctonia-bacterial root rot complex on sugarbeet caused by Rhizoctonia solani and Leuconostoc mesenteroides can cause significant yield losses. To investigate the impact of different tillage systems on this complex, field studies were conducted from 2009 to 2011. Split blocks with conventional and strip tillage as main plot treatments were arranged in a randomized complete block design with four replications. Within main plots, there were seven treatments (non-inoculated check and six R. solani AG 2-2 IIIB strains). Regardless of tillage, the roots responded in a similar manner for fungal rot (conventional 8% versus strip 7%), bacterial rot (26% versus 34%), total rot (33% versus 41%), neighboring roots infected (1.7 roots versus 1.5 roots),...
Tipo: Article Palavras-chave: Root rots; Sugarbeet; Tillage.
Ano: 2012 URL: http://eprints.nwisrl.ars.usda.gov/1471/1/1436.pdf
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Influence of Sugarbeet Tillage Systems on the Rhizoctonia-Bacterial Root Rot Complex NWISRL
Strausbaugh, C.A.; Eujayl, Imad A..
The Rhizoctonia-bacterial root rot complex in sugarbeet caused by Rhizoctonia solani and Leuconostoc mesenteroides can cause significant yield losses. To investigate the impact of different tillage systems on this complex, field studies were conducted from 2009 to 2011. Split blocks with conventional and strip tillage as main plot treatments were arranged in a randomized complete block design with four replications. Within main plots, there were seven treatments (non-inoculated check and six R. solani AG-2-2 IIIB strains). Regardless of tillage, the roots responded in a similar manner for fungal rot (conventional 8% versus strip 7%), bacterial rot (26% versus 34%), total rot (33% versus 41%), neighboring roots infected (1.7 roots versus 1.5 roots),...
Tipo: Article Palavras-chave: Root rots; Sugarbeet; Bacteria.
Ano: 2012 URL: http://eprints.nwisrl.ars.usda.gov/1472/1/1437.pdf
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Interaction of sugar beet host resistance and rhizoctonia solani AG-2-2 IIIB strains NWISRL
Strausbaugh, C.A.; Eujayl, Imad A.; Panella, Leonard W..
Rhizoctonia root rot caused by Rhizoctonia solani can cause serious economic losses in sugar beet fields. Preliminary evidence suggests there could be interactions between different strains and resistance sources. Thus, field studies were conducted to determine if nine R. solani AG-2-2 IIIB strains varied for virulence when compared with a non-inoculated check and interacted with five sugar beet lines (four resistant lines and a susceptible check). The studies were arranged in a randomized complete block design with six replications. Roots were evaluated for surface rot and internal fungal and bacterial rot in September. All strains were virulent on the susceptible check, FC901/C817, and had the same ranking (r = 1.0) regardless of disease variable....
Tipo: Article Palavras-chave: Root rots; Sugarbeet.
Ano: 2013 URL: http://eprints.nwisrl.ars.usda.gov/1505/1/1469.pdf
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Leuconostoc spp. associated with root rot in sugar beet and their interaction with rhizoctonia solani NWISRL
Strausbaugh, C.A..
Rhizoctonia root and crown is an important disease problem in sugar beet caused by Rhizoctonia solani and also shown to be associated with Leuconostoc. Since, the initial Leuconostoc studies were conducted with only a few isolates and the relationship of Leuconostoc with R. solani is poorly understood, a more thorough investigation was conducted. A total of 203 Leuconostoc isolates were collected from recently harvested sugar beet roots in southern Idaho and southeastern Oregon during 2010 and 2012: 88 and 85% L. mesenteroides, 6 and 15% L. pseudomesenteroides, 2 and 0% L. kimchi, and 4 and 0% unrecognized Leuconostoc sp., respectively. Based on 16S rRNA sequencing, haplotype 11 (L. mesenteroides isolates) comprised 68 to 70% of the isolates both...
Tipo: Article Palavras-chave: Rhizomania; Root rots; Sugarbeet.
Ano: 2016 URL: http://eprints.nwisrl.ars.usda.gov/1620/1/1577.pdf
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Ocorrência da podridão negra das raízes e do caule da mandioca no Estado do Pará, causada por Scytalidium lignicola. Repositório Alice
POLTRONIERI, L. S.; TRINDADE, D. R.; ALBUQUERQUE, F. C.; POLTRONIERI, M. C..
1998
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Mandioca; Podridão da raiz; Podridão do caule; Doença fungica; Scytalidium lignicola; Paragominas; Pará; Amazônia; Brasil; Cassava; Root rots; Stems; Fungal diseases.
Ano: 1998 URL: http://www.alice.cnptia.embrapa.br/handle/doc/399751
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Ocorrência do fungo Scytalidium lignicola agente causal da podridão negra do caule e raiz da mandioca no Estado do Pará. Repositório Alice
TRINDADE, D. R.; POLTRONIERI, L. S.; ALBUQUERQUE, F. C.; POLTRONIERI, M. C..
1997
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Mandioca; Doença por fungo; Podridão do caule; Podridão da raiz; Scytalidium lignicola; Cassava; Fungal diseases; Root rots.
Ano: 1997 URL: http://www.alice.cnptia.embrapa.br/handle/doc/397937
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