Germinação e incidência de fungos em testes com sementes de Brachiaria brizantha Stapf.

Dias, D.C.F.S.; Toledo, Francisco Ferraz de

doi:10.1590/s0103-90161993000100011

Cited by 11 publications

(4 citation statements)

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“…They include Bipolaris, which causes foliar diseases in rice (Celmer et al, 2007) and damage in the grass, Paspalum atratum cv. Pojuca (Anjos et al, 2004) and fungi of the genus Fusarium,, which is a disease agent in various hosts (Sala et al, 2006;Dias and Toledo, 1993), including castor bean. In general, the treatment with the biological product did not inhibit the growth of fungus species, including some, such as Fusarium (Silva et al, 2005), which are very important for castor bean, principally the AL Guarany 2002 cultivar (Table 5).…”

Section: Resultsmentioning

confidence: 99%

Chemical and biological treatments of castor bean seeds: effects on germination, emergence and associated microorganisms

Marroni¹,

Moura²,

Ueno³

2012

Rev. bras. sementes

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RESUMO -Avaliou-se o efeito dos tratamentos químicos e biológicos sobre a emergência, vigor de plântulas de mamona, produção de matéria seca, além do controle de microrganismos associados às sementes das cultivares AL Guarany 2002 e Lyra. Os produtos testados foram carbendazim+thiram, carboxin+thiram e um à base de Trichoderma. A emergência total e de plântulas foram avaliadas aos 27 dias após a semeadura e a produção de matéria seca, com plantas retiradas 45 dias após a semeadura. A cv. AL Guarany 2002 apresentou maior incidência de microrganismos em relação à cv. Lyra. O tratamento químico foi 100% eficiente no controle de fungos e o tratamento biológico não reduziu a incidência de microrganismos nas sementes. O tratamento químico resultou em plantas com maior matéria seca e os melhores resultados foram para carbendazim + thiram e carboxin+ thiram, nas doses de 60 g + 140 g e 50 g + 50 g/100 kg de sementes, respectivamente. O carbendazim + thiram foi o único tratamento que se mostrou estatisticamente superior, quanto ao índice de emergência total, enquanto que o tratamento biológico aumentou os valores de emergência somente na cv. Lyra, evidenciando sua inferioridade. Destacou-se a importância dos fungicidas para o controle de patógenos associados às sementes.Termos para indexação: Ricinus communis, fungicidas, teste de papel filtro, Trichoderma.ABSTRACT -The effect of chemical and biological treatments on castor bean emergence, seedling vigor, dry matter production, and also the control of microorganisms associated with seeds of the AL Guarany 2002 and Lyra cultivars, was evaluated. The products tested were carbendazim + thiram, carboxin + thiram and a product based on Trichoderma. Total seed and seedling emergence were evaluated at 27 days after sowing whereas dry matter production was verified for plants removed 45 days after sowing. The Guarany 2002 AL cultivar had a higher incidence of microorganisms than the Lyra cultivar. The chemical treatment was 100% effective in controlling fungi but the biological treatment did not reduce microorganism incidence on the seeds. Chemical treatment resulted in plants with more dry matter and the best results were for carbendazim + thiram and carboxin + thiram at doses of 60 g + 140 g and 50 g + 50 g/100 kg of seeds, respectively. The carbendazim + thiram mixture was the only treatment which was statistically higher for total emergence whereas the biological treatment increased emergence only for the Lyra cultivar, thus demonstrating its lower efficiency. The importance of fungicides to control pathogens associated with seeds was discussed.

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Section: Resultsmentioning

confidence: 99%

Chemical and biological treatments of castor bean seeds: effects on germination, emergence and associated microorganisms

Marroni¹,

Moura²,

Ueno³

2012

Rev. bras. sementes

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“…A incidência de fungos diminuiu a germinação das sementes em soja (Yorinori, 1982) e em braquiária (Dias & Toledo, 1993); já Torres & Bringel (2005) citam que os lotes de feijão-macassar (Vigna unguiculata) com menor incidência de fungos foram, de forma geral, os que tiveram menores valores de germinação.…”

Section: Resultsunclassified

Incidência de fungos em sementes de Phaseolus vulgaris L. provenientes do Estado de Sergipe

Marino¹,

Mesquita

Andrade

et al. 2008

Agraria

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Avaliou-se a ocorrência de fungos em sementes de feijão empregadas no plantio, no Estado de Sergipe. Analisaram-se três genótipos (IPA 06, Badejo e Carioca Rajado) obtidos junto aos produtores do município de Simão Dias, SE e se utilizou o método do papel de filtro incubado sete dias, com uma amostra de 25 sementes com oito repetições, totalizando 200 sementes por cultivar. Observou-se, dentre os genótipos testados, que a maior incidência foi de Fusarium solani f. sp. solani (0,5 a 12,5%) e Rhizoctonia solani (1,0 a 39,5% AB S TR ACTThe occurrence of fungi in bean seeds from Sergipe state was evaluated. Three cultivars (IPA06, Badejo and Carioca Rajado) obtained from bean growers in the municipality of Simão Dias -SE were analyzed and tested using the blotter method, incubated for seven days, with a sample of 25 seeds with 8 replications, with a total of 200 seeds per cultivar. A high incidence of Fusarium solani f. sp. solani (0.5 a 12.5%) and Rhizoctonia solani (1.0 a 39.5%) in all cultivars was observed. Others pathogens of bean seeds like Cladosporium cladosporoides, Pythium sp., Sclerotium rolfsii e Phoma exigua var exigua e Sclerotium rolfsii were also identified, but with low indices. The presence of Penicillium sp. (0.5 a 10.0%) was observed in all cultivars and Aspergillus (14.5 a 97.5%) only in cultivars Badejo and Carioca Rajado

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“…e Aspergillus sp. foram, também, relatados (Dias & Toledo 1993, Martins et al 2001. Dentre as doenças mais importantes, pode-se citar a mela-das-sementes, causada por Claviceps sulcata, uma forma teleomórfica de Sphacelia sp., e o carvão da Brachiaria, provocado pelo fungo Ustilago operta (Verzignassi & Fernandes 2001).…”

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PELICULIZAÇÃO DE SEMENTES INTACTAS E ESCARIFICADAS DE Brachiaria brizantha (Hochst. ex A. Rich.) Stapf

Custódio

Ambiel

Rodrigues

et al. 2011

Pesq. Agropec. Trop.

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Germinação e incidência de fungos em testes com sementes de Brachiaria brizantha Stapf.

Cited by 11 publications

References 2 publications

Chemical and biological treatments of castor bean seeds: effects on germination, emergence and associated microorganisms

Chemical and biological treatments of castor bean seeds: effects on germination, emergence and associated microorganisms

Incidência de fungos em sementes de Phaseolus vulgaris L. provenientes do Estado de Sergipe

PELICULIZAÇÃO DE SEMENTES INTACTAS E ESCARIFICADAS DE Brachiaria brizantha (Hochst. ex A. Rich.) Stapf

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