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BRSMG Camaleão: new mungbean cultivar with large, shiny, green seeds
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Vieira, Rogério Faria

; Carneiro, José Eustáquio de Souza

; Paula Júnior, Trazilbo José de

; Lima, Renan Cardoso

; Soares, Bruno de Almeida

; Teixeira, Pablo Henrique

; Santos, Davi Moreira

; Jacoob, Luciano Luis

Crop Breeding and Applied Biotechnology

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2022, Volume 22 N. 2 elocation e32732227

Abstract: En | Text: En | PDF: En

Abstract ‘BRMGS Camaleão’ is a mungbean cultivar with large, shiny, green seeds released for the state of Minas Gerais, Brazil. It was developed by the Asian Vegetable Research and Development Center as line VC 6148-B-16. In seven trials established in the Zona da Mata region, it had an average yield of 1493 kg ha-1 and 1000-seed weight of 68-78 g.

https://doi.org/10.1590/1984-70332022v22n2c17

How to write the discussion section of a scientific article
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Vieira, Rogério Faria

; Lima, Renan Cardoso de

; Mizubuti, Eduardo Seiti Gomide

Acta Scientiarum. Agronomy

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2019, Volume 41 elocation e42621

Abstract: En | Text: En | PDF: En

ABSTRACT. The Discussion is the hardest section of a scientific article to write, as cognitive skills must be used to properly contextualize the findings of a study. In this article, we guide scientific writers, particularly unexperienced ones, on how to structure a Discussion section based on an article by Docherty and Smith (1999). According to these authors, a discussion should be prepared by organizing information in the following order: (a) statement of principal findings; (b) strengths and weaknesses of the study; (c) strengths and weaknesses in relation to other studies, discussing particularly any differences in results; (d) meaning of the study: possible mechanisms and implications; and (e) unanswered questions and future research. Each component of this sequence is discussed in detail with examples drawn from the literature.

https://doi.org/10.4025/actasciagron.v41i1.42621 27781 downloads

Agronomic biofortification of common bean grain with zinc
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Cambraia, Thaís Lopes Leal

; Fontes, Renildes Lúcio Ferreira

; Vergütz, Leonardus

; Vieira, Rogério Faria

; Neves, Júlio César Lima

; Corrêa Netto, Pedro Silva

; Dias, Raphael Felipe Nascimento

Pesquisa Agropecuária Brasileira

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2019, Volume 54 elocation e01003

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Resumo: O objetivo deste trabalho foi avaliar os efeitos da aplicação parcelada e combinada de zinco foliar (ZnF) + Zn no solo (ZnS) sobre o teor de Zn dos grãos (TZnG) do feijão-comum (Phaseolus vulgaris). Dois experimentos foram realizados em casa de vegetação durante dois períodos. No primeiro experimento, duas cultivares de feijão-comum receberam seis doses de ZnF (0, 120, 240, 480, 720, ou 1.200 g ha-1), com aplicações parceladas nos estágios da planta R5, R7 e R8, ou R7 e R8, ou R8. No segundo experimento, uma cultivar recebeu três doses de ZnS (0, 5 ou 10 kg ha-1) combinadas com doses de ZnF (0, 1, 1,5, 3, 6 ou 10 kg ha-1). No primeiro experimento, com o incremento do ZnF, o TZnG aumentou linearmente de 15,3 para 20,7 mg kg-1. O parcelamento do ZnF não afetou o TZnG. No segundo experimento, o ZnF sem o ZnS não afetou o TZnG. O ZnS dobrou o TZnG em comparação ao tratamento sem aplicação de ZnS. Com 5 kg ha-1 de ZnS, o mais alto TZnG (67,5 mg kg-1) foi obtido com 7,8 kg ha-1 de ZnF. Com 10 kg ha-1, o mais alto TZnG (66,0 mg kg-1) foi obtido com 4,9 kg ha-1 de ZnF. O parcelamento do ZnF não é vantajoso em relação à aplicação única, e a combinação ZnF e ZnS aumenta o TZnG do feijão-comum em casa de vegetação.

Abstract: The objective of this work was to evaluate the effects of the split and combinated application of foliar zinc (ZnF) + soil Zn (ZnS) on Zn concentration in the grains (ZnCG) of common bean (Phaseolus vulgaris). Two experiments were carried out in a greenhouse during two seasons. In the first experiment, two common bean cultivars received six ZnF rates (0, 120, 240, 480, 720, or 1,200 g ha-1), with split applications at the R5, R7, and R8, or R7 and R8, or R8 plant stages. In the second experiment, one cultivar received three ZnS rates (0, 5, or 10 kg ha-1) combined with ZnF rates (0, 1, 1.5, 3, 6, or 10 kg ha-1). In the first experiment, with the ZnF increment, ZnCG increased linearly from 15.3 to 20.7 mg kg-1. ZnF splitting did not affect ZnCG. In the second experiment, ZnF without ZnS did not affect ZnCG. ZnS doubled ZnCG in comparison with the treatment without ZnS application. At 5 kg ha-1 ZnS, the highest ZnCG (67.5 mg kg-1) was obtained with 7.8 kg ha-1 ZnF. At 10 kg ha-1, the highest ZnCG (66 mg kg-1) was obtained with 4.9 kg ha-1 ZnF. ZnF splitting is not advantageous over a single application, and the combination of ZnF and ZnS increases ZnCG in common bean, in greenhouse conditions.

https://doi.org/10.1590/s1678-3921.pab2019.v54.01003 1452 downloads

Combining ability as a strategy for selecting common bean parents and populations resistant to white mold
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Ferreira, Lenio Urzeda

; Melo, Patrícia Guimarães Santos

; Vieira, Rogério Faria

; Lobo Junior, Murillo

; Pereira, Helton Santos

; Melo, Leonardo Cunha

; Souza, Thiago Lívio Pessoa Oliveira de

Crop Breeding and Applied Biotechnology

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sep 2018, Volume 18 N. 3 Pages 276 - 283

Abstract: En | Text: En | PDF: En

Abstract Common bean parents and populations resistant to white mold (WM, caused by Sclerotinia sclerotiorum) were selected based on estimates of general combining ability (GCA) and specific combining ability (SCA) for WM severity in three field nurseries in Brazil. Twenty-seven populations were obtained by partial diallel crosses between parents from two groups: GI) three sources of partial resistance identified abroad and GII) nine Brazilian cultivars and elite lines. Populations were advanced in bulk up to the F6 generation. The overall mean of WM severity from combined analysis ranged from 2.83 to 5.03 (scale of 1 to 9 scores) in the F6 population. The score of the susceptible control BRS Requinte was 7.21. The GI parents K-59, in Oratórios, MG, and Viçosa, MG, and K-407 and PI204717, in Goianira, GO, contributed to increase resistance to WM. The most promising populations for obtaining elite lines resistant to WM were K-59/BRS Executivo, PI204717/BRS Campeiro, PI204717/Jalo Precoce, K-59/BRS Radiante, and K-407/BRS Cometa.

https://doi.org/10.1590/1984-70332018v18n3a41 828 downloads

Split application of molybdic fertilizer at the reproductive stage of common bean increases the molybdenum content in seed
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Vieira, Rogério Faria

; Lima, Renan Cardoso

; Prado, Adalgisa Leles do

; Paula Júnior, Trazilbo José de

; Soares, Bruno de Almeida

Acta Scientiarum. Agronomy

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dec 2016, Volume 38 N. 4 Pages 529 - 533

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

RESUMO. Avaliamos os efeitos de parcelamentos da aplicação de molibdênio (Mo) na fase reprodutiva do feijão-comum no conteúdo de Mo na semente (CMoS) e na sua qualidade fisiológica em dois ensaios na Zona da Mata, Minas Gerais. Pulverizaram-se feijoeiros com 100 ou 600 g Mo ha-1 na fase V4. Esta última dose também foi parcelada: 100(V4)+500(R5), 100(V4)+500(R7), 100(V4)+250(R5)+250(R7) e 100(V4)+150(R5)+350(R7). O CMoS de plantas pulverizadas com 600 g (cinco tratamentos) foi 3,7 ou 62 vezes maior que o das pulverizadas com 100 g; sementes deste tratamento apresentaram qualidade ligeiramente melhor que as daqueles. Aplicação de 100 g em V4 + 500 g na fase reprodutiva (quatro tratamentos) aumentou 1,6 ou 2,7 vezes o CMoS comparativamente ao CMoS de plantas adubadas com 600 g em V4. Parcelamento de 500 g em duas pulverizações aumentou em 11% (p = 0,257) ou 16% (p = 0,013) o CMoS comparativamente a uma pulverização. O CMoS pode ser mais alto quando se pulveriza o Mo em R7 (formação de vagens) comparativamente a R5 (pré-floração), sem prejuízo à qualidade da semente. Logo, o parcelamento do Mo nessas duas fases do feijão-comum economiza fertilizante molíbdico para produzir sementes ricas em Mo, com ligeira redução da qualidade da semente.

ABSTRACT. We evaluated the effects of split molybdenum (Mo) application at the reproductive stage of the common bean on seed Mo content (SMoC) and seed quality in two trials in the Zona da Mata region, Minas Gerais. Plants were sprayed with 100 or 600 g Mo ha-1 at the V4 stage. The higher dose was also split into 100(V4)+500(R5), 100(V4)+500(R7), 100(V4)+250(R5)+250(R7), and 100(V4)+150(R5)+350(R7). SMoC from plants sprayed with 600 g (five treatments) was 3.7- or 62-fold higher than those sprayed with 100 g, with seeds from the former treatments exhibiting slightly poorer quality. Application of 100 g at V4 + 500 g at the reproductive stage (four treatments) increased SMoC 1.6- or 2.7-fold compared with SMoC from plants sprayed with 600 g at V4. Split application of 500 g with two sprays increased SMoC by 11% (p = 0.257) or 16% (p = 0.013) compared with one spray of 500 g. SMoC can be higher with Mo applied at R7 (pod formation) instead of at R5 (pre-flowering), without impairing seed quality. Thus, split Mo application between the R5 and R7 stages of the common bean saves molybdic fertilizer to produce Mo-rich seeds, with only a slight decrease in seed quality.

https://doi.org/10.4025/actasciagron.v38i4.30536 924 downloads

BRSMG Uai: common bean cultivar with carioca grain type and upright plant architecture
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Ramalho, Magno Antonio Patto

; Abreu, Ângela de Fátima Barbosa

; Carneiro, José Eustáquio de Souza

; Melo, Leonardo Cunha

; Paula Júnior, Trazilbo José de

; Pereira, Helton Santos

; Peloso, Maria José Del

; Pereira Filho, Israel Alexandre

; Martins, Maurício

; Giúdice, Marcos Paiva Del

; Vieira, Rogério Faria

Crop Breeding and Applied Biotechnology

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sep 2016, Volume 16 N. 3 Pages 261 - 264

Abstract: En | Text: En | PDF: En

Abstract The common bean cultivar with carioca grain type, BRSMG Uai, is recommended for cultivation in Minas Gerais and stands out for its upright plant architecture, which facilitates cultivation and mechanical harvesting. This cultivar has high yield potential and is resistant to the major races of anthracnose that occur in region.

https://doi.org/10.1590/1984-70332016v16n3c40 918 downloads

Reaction of sources of resistance to white mold to microsatellite haplotypes of Sclerotinia sclerotiorum
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Lehner, Miller da Silva

; Paula Júnior, Trazilbo José de

; Vieira, Rogério Faria

; Lima, Renan Cardoso

; Soares, Bruno de Almeida

; Silva, Rhaphael Alves

Scientia Agricola

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apr 2016, Volume 73 N. 2 Pages 184 - 188

Abstract: En | Text: En | PDF: En

ABSTRACT White mold caused by the fungus Sclerotinia sclerotiorum is the most yield-limiting disease of common bean in Brazil. To date, there has been no commercial cultivar resistant to this disease. In a greenhouse we evaluated white mold resistance sources (Cornell 605, A195 and G122) against eight isolates of S. sclerotiorum from five Brazilian states. A Brazilian cultivar (BRSMG Madrepérola) and a susceptible check (Beryl) were used as control. Treatments were arranged in factorial combinations (5 × 8) in a completely random design with four replicates. Disease severity was assessed on a rating scale of 1-to-9 together with lesion length, which was used to determine an area under the disease progress curve (AUDPC). Polymorphisms detected in ten microsatellite loci were used to assess variability between the isolates. Each isolate was a distinct haplotype; they formed a genetic tree with two clusters. One cluster was formed by three isolates collected from the states of Minas Gerais and São Paulo (southeastern); the others, by isolates from Paraná, Santa Catarina (southern), Goiás (Mid-western), and again, Minas Gerais. Genotype × isolate interaction was significant. In general, Beryl was more susceptible than BRSMG Madrepérola. Considering the AUDPC and/or the white mold reaction score, Cornell 605 exhibited more physiological resistance than BRSMG Madrepérola to seven isolates, A195 to five isolates, and G122 to two isolates. Our results suggest that Cornell 605 is the best source of resistance to white mold for the southern region, whereas Cornell 605 and A195 are somewhat superior to G122 for the southeastern and mid-western regions.

https://doi.org/10.1590/0103-9016-2015-0085 1445 downloads

A aplicação foliar de molibdênio na fase de enchimento de vagens do feijão-comum pode reduzir a qualidade da semente
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Vieira, Rogério Faria

; Paula Júnior, Trazilbo José de

; Prado, Adalgisa Leles do

; Araújo, Roberto Fontes

; Lehner, Miller da Silva

; Silva, Rhaphael Alves

Revista Ceres

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aug 2015, Volume 62 N. 4 Pages 415 - 419

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Com o objetivo de aprimorar a tecnologia de produção de sementes ricas em molibdênio (Mo), foram avaliados os efeitos da aplicação foliar de 600 g ha-1 de Mo na qualidade fisiológica da semente de feijão. Em campo, essa dose de Mo foi aplicada na fase V4 (terceira folha trifoliolada), ou parcelada de duas a quatro vezes e aplicada em V4, R6 (floração), R7 e, ou, R8 (enchimento de vagens). A aplicação de 300 g ha-1 de Mo em R6 não influenciou a qualidade da semente, em comparação com a do controle (90 g ha-1 de Mo aplicado em V4). Dos três tratamentos em que 200, 255 ou 300 g ha-1 de Mo foram aplicados em R7, apenas com 255 g ha-1 o Mo reduziu a germinação e vigor das sementes, em comparação com as do controle. Quando 200, 255 ou 300 g ha-1 de Mo foram aplicados em R8 (cinco tratamentos), geralmente o Mo reduziu a germinação e, em dois casos, também o vigor das sementes, em comparação com os do controle. Concluiu-se que 255 g ha-1 de Mo aplicado em R7 e, sobretudo, doses iguais ou mais altas que 200 g ha-1 de Mo aplicadas em R8 podem reduzir a qualidade fisiológica da semente de feijão.

Aiming to improve the technology of producing seed with high Mo content, the effects of 600 g ha-1 of foliar-applied Mo on common bean seed quality were evaluated. In the field, this Mo rate was applied at the V4 growth stage (third trifoliolate leave) or divided into two or four rates applied at V4, R6 (flowering), R7 and/or R8 (pod filling). Mo (300 g ha-1) applied at R6 did not affect seed quality relative to control (90 g ha-1 of Mo applied at V4). In the three treatments in which 200, 255 or 300 g ha-1 of Mo were applied at R7, only in one (255 g ha-1) Mo decreased seed germination and vigor relative to control. When 200, 255 or 300 g ha-1 of Mo were applied at R8 (five treatments), in general, Mo decreased seed germination and, in two cases, also seed vigor relative to control. It was concluded that 255 g ha-1 of Mo applied at R7 and, especially, doses of 200 g ha-1 of Mo or higher applied at R8 can reduce common bean seed quality.

https://doi.org/10.1590/0034-737X201562040012 1134 downloads

BRSMG Realce: Common bean cultivar with striped grains for the state of Minas Gerais
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Melo, Leonardo Cunha

; Abreu, Ângela de Fátima Barbosa

; Ramalho, Magno Antonio Patto

; Carneiro, José Eustáquio de Souza

; Paula Júnior, Trazilbo José de

; Del Peloso, Maria José

; Pereira, Helton Santos

; Faria, Luís Cláudio de

; Pereira Filho, Israel Alexandre

; Moreira, José Aloísio Alves

; Martins, Maurício

; Vieira, Rogério Faria

; Martins, Fábio Aurélio Dias

; Coelho, Maurício Antônio de Oliveira

; Costa, Joaquim Geraldo Cáprio da

; Wendland, Adriane

; Santos, João Bosco dos

; Diaz, José Luiz Cabrera

; Carneiro, Pedro Crescêncio de Souza

; Del Giúdice, Marcos Paiva

; Faria, Josias Correia de

Crop Breeding and Applied Biotechnology

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mar 2014, Volume 14 N. 1 Pages 61 - 64

Abstract: En | Text: En | PDF: En

The common bean cultivar "BRSMG Realce", recommended for the state of Minas Gerais, has high yield potential and resistance to powdery mildew, bacterial wilt and to anthracnose pathotypes 65, 73, 77, 81, 91, 475 and 479. The plants and pods are high, resulting in lower loss during mechanical harvest.

2002 downloads Cited 2 times in SciELO

10.

Genotypic variability in seed accumulation of foliar-applied molybdenum to common bean
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Vieira, Rogério Faria

; Paula Júnior, Trazilbo José de

; Carneiro, José Eustáquio de Souza

; Queiroz, Marina Viana

Revista Brasileira de Ciência do Solo

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feb 2014, Volume 38 N. 1 Pages 205 - 213

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

A variabilidade genotípica em feijão-comum em acumular molibdênio (Mo) nas sementes foi demonstrada quando o solo é a principal fonte de Mo; entretanto, essa variabilidade ainda é desconhecida quando o Mo é aplicado na folhagem. Portanto, determinaram-se teores de Mo da semente (TMoS) e conteúdos de Mo da semente (CMoS) de 12 genótipos em quatro experimentos conduzidos na Zona da Mata, Minas Gerais, Brasil, nos quais pulverizaram-se as plantas com 600 g ha-1 de Mo. Para comparação, conduziram-se mais dois experimentos sem aplicação de Mo. Nesse caso, não foi detectado Mo na semente ou o TMoS médio foi 2,83 µg g-1, sem diferença significativa entre genótipos. Em média, com aplicação de Mo, os TMoS variaram de 14,7 a 25,0 µg g-1 e os CMoS, de 3,94 a 6,84 µg. 'Majestoso' ficou entre os genótipos com os mais altos TMoS nos quatro experimentos. No entanto, as sementes grandes de 'Jalo MG-65' e 'Carnaval' geralmente apresentaram mais altos CMoS que as sementes pequenas da 'Majestoso'. 'Ouro Negro' e, sobretudo, 'Valente' ficaram entre os genótipos com os mais baixos TMoS e CMoS. Os valores dessas variáveis foram 61 e 90 %, respectivamente, mais altos na 'Majestoso' que na 'Valente'. Os resultados sugerem que genótipos de feijão-comum diferem na capacidade de acumular nas sementes o Mo aplicado na folhagem. Sementes enriquecidas com Mo de genótipos de sementes grandes ou de genótipos de sementes pequenas bons acumuladores de Mo na semente podem ser produzidas com dose relativamente menor de fertilizante molíbdico.

The genotypic variability in molybdenum (Mo) accumulation in common bean seeds has been demonstrated in cases in which soil is the main Mo source, but this variability is yet unknown when Mo is foliar-applied. Therefore, seed Mo concentrations (SMoCc) and seed Mo contents (SMoCt) of 12 genotypes were determined in four experiments in the Zona da Mata, Minas Gerais, Brazil, in which plants were sprayed with 600 g ha-1 Mo. For comparison, two additional experiments without external Mo were conducted. Without Mo application, the average SMoCc was undetectable or 2.83 µg g-1, without significant differences among genotypes. On average, with Mo applications, SMoCc ranged from 14.7 to 25.0 µg g-1 and SMoCt, from 3.94 to 6.84 µg. 'Majestoso' was among the genotypes with the highest SMoCc in the four experiments. However, the large-seeded 'Jalo MG-65' and 'Carnaval' generally had higher SMoCt than the small-seeded 'Majestoso'. 'Ouro Negro' and especially 'Valente' were among the genotypes with the lowest SMoCc and SMoCt. The values of these variables were 61 and 90 %, respectively, higher for 'Majestoso' than those for 'Valente'. Our results suggest that common bean genotypes differ in their capacity to accumulate foliar-applied Mo in the seeds. Mo-rich seeds of large-seeded genotypes or of small-seeded of small-seeded genotypes with good capacity to accumulate Mo in seeds can be produced with relatively less Mo fertilizer.

1613 downloads Cited 2 times in SciELO

11.

BRSMG União: common bean cultivar with jalo grain for the state of Minas Gerais
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Ramalho, Magno Antonio Patto

; Abreu, Ângela de Fátima Barbosa

; Santos, João Bosco dos

; Carneiro, José Eustáquio de Souza

; Melo, Leonardo Cunha

; Paula Júnior, Trazilbo José de

; Pereira, Helton Santos

; Del Peloso, Maria José

; Martins, Maurício

; Pereira Filho, Israel Alexandre

; Martins, Fábio Aurélio Dias

; Coelho, Maurício Antônio de Oliveira

; Moreira, José Aloisio Alves

; Giúdice, Marcos Paiva Del

; Vieira, Rogério Faria

; Faria, Luís Cláudio de

; Teixeira, Hudson

; Carneiro, Pedro Crescêncio de Souza

Crop Breeding and Applied Biotechnology

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dec 2012, Volume 12 N. 4 Pages 285 - 288

Abstract: En | Text: En | PDF: En

The bean cultivar BRSMG União as a new option of a bean cultivar with jalo grains for the state of Minas Gerais. The cultivar BRSMG União had an average grain yield of 9.8% above the mean of the controls (Jalo EEP 558 and BRS Radiante) and was resistant to powdery-mildew.

955 downloads

12.

BRSMG Madrepérola: common bean cultivar with late-darkening Carioca grain
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Carneiro, José Eustáquio de Souza

; Abreu, Angela de Fatima Barbosa

; Ramalho, Magno Antonio Patto

; Paula Júnior, Trazilbo José de

; Del Peloso, Maria José

; Melo, Leonardo Cunha

; Pereira, Helton Santos

; Pereira Filho, Israel Alexandre

; Martins, Maurício

; Vieira, Rogério Faria

; Martins, Fábio Aurélio Dias

; Coelho, Maurício Antônio de Oliveira

; Carneiro, Pedro Crescêncio de Souza

; Moreira, José Aloísio Alves

; Santos, João Bosco dos

; Faria, Luís Cláudio de

; Costa, Joaquim Geraldo Cáprio da

; Teixeira, Hudson

Crop Breeding and Applied Biotechnology

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dec 2012, Volume 12 N. 4 Pages 281 - 284

Abstract: En | Text: En | PDF: En

The cultivar BRSMG Madrepérola, recommended for cultivation in Minas Gerais, has the feature of maintaining a light grain color for a longer period than other Carioca grain cultivars. The yield potential is high and the resistance level good to the major anthracnose races in the region.

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13.

Limitations in controlling white mold on common beans with Trichoderma spp. at the fall-winter season
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Paula Júnior, Trazilbo José de

; Teixeira, Hudson

; Vieira, Rogério Faria

; Morandi, Marcelo Augusto Boechat

; Lehner, Miller da Silva

; Lima, Renan Cardoso

; Carneiro, José Eustáquio de Sousa

Summa Phytopathologica

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dec 2012, Volume 38 N. 4 Pages 337 - 340

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Estudou-se a eficácia da aplicação de Trichoderma spp. no controle do mofo-branco do feijoeiro cultivado no outono-inverno na Zona da Mata de Minas Gerais. Não houve efeito do antagonista em reduzir a severidade da doença, o que pode ser explicado pelas baixas temperaturas e pela alta pressão de inóculo no campo. Conclui-se que aplicações de Trichoderma não são recomendadas para o controle do mofo-branco do feijoeiro no outono-inverno em regiões com temperatura média abaixo de 20 °C, considerando que essa condição climática favorece mais o desenvolvimento do patógeno do que o do antagonista.

We studied the effectiveness of application of Trichoderma spp. in controlling white mold on common beans at the fall-winter crop in the Zona da Mata region of the State of Minas Gerais, Brazil. There was no effect of the antagonist in reducing the disease severity, which could be explained by the low temperatures and the high inoculum pressure in the field. We concluded that Trichoderma applications are not recommended for control of white mold on common beans at the fall-winter season in regions with average temperature bellow 20 °C, since this condition favor more the pathogen than the antagonist.

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14.

Trichoderma spp. decrease Fusarium root rot in common bean
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Teixeira, Hudson

; Paula Júnior, Trazilbo José de

; Vieira, Rogério Faria

; Silva, Marcelo Barreto da

; Ferro, Camila Geovana

; Lehner, Miller da Silva

Summa Phytopathologica

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dec 2012, Volume 38 N. 4 Pages 334 - 336

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

A eficácia de seis produtos comerciais à base de Trichoderma (PCT) no controle da podridão-radicular-seca do feijoeiro (PRS) foi avaliada em condições de campo. Três PCT, usados no tratamento de sementes ou aplicados no sulco de plantio, aumentaram a emergência das plântulas tanto quanto o fungicida fludioxonil. A incidência de PRS não foi afetada, mas todos os PCT e o fludioxonil reduziram a severidade em relação à testemunha. A aplicação de produtos à base de Trichoderma spp. foi tão eficaz quanto o fludioxonil no manejo da PRS.

The effectiveness of six Trichoderma-based commercial products (TCP) in controlling Fusarium root rot (FRR) in common bean was assessed under field conditions. Three TCP, used for seed treatment or applied in the furrow, increased seedling emergence as much as the fungicide fludioxonil. FRR incidence was not affected, but all TCP and fludioxonil reduced the disease severity, compared to control. Application of Trichoderma-based products was as effective as that of fludioxonil in FRR management.

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15.

Management of white mold in type III common bean with plant spacing and fungicide
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Vieira, Rogério Faria

; Paula Júnior, Trazilbo J.

; Carneiro, José Eustáquio S.

; Teixeira, Hudson

; Queiroz, Telma Fallieri N.

Tropical Plant Pathology

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apr 2012, Volume 37 N. 2 Pages 91 - 101

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

O mofo-branco é doença que limita a produtividade no outono-inverno no Sudeste do Brasil, quando feijoeiros irrigados do tipo III são geralmente semeados no espaçamento entre fileiras (EEF) de 0,5 m com 10 a 12 plantas por metro. O objetivo com este estudo foi avaliar a eficácia da combinação de EEF largo, densidade de plantas (DP) baixa, com ou sem fungicida, no manejo da doença. Os tratamentos foram arranjados no fatorial 2³: EEF (0,50 ou 0,75 m), DP (6 ou 12 plantas por metro) e fungicida (com ou sem). Dois ensaios foram conduzidos, em Viçosa, MG. Em 2002, a incidência média do mofo-branco foi de 43,2%, a severidade de 31,1% e a produtividade de 2513 kg ha-1. Em 2003, os valores dessas variáveis foram: 48,0%, 22,6% e 2159 kg ha-1, respectivamente. As interações que envolveram EEF e DP não foram significativas em relação à intensidade da doença e à produtividade na análise combinada dos anos. EEF largo reduziu a intensidade do mofo-branco em 2002. DP baixa reduziu a incidência em 2002 e não influenciou a produtividade na análise combinada. Nas parcelas com fungicida, EEF largo diminuiu a produtividade em 2002, mas EEF não influenciou a produtividade em 2003. Nas parcelas sem fungicida, EEF não influenciou a produtividade nos dois anos. Concluímos que a combinação de EEF largo e DP baixa é uma estratégia promissora para o manejo do mofo-branco quando não se aplica fungicida. Quando se aplica fungicida, o espaçamento entre fileiras normalmente usado (0.50 m) associado a DP baixa maximiza a produtividade.

White mold is a yield-limiting disease during the fall-winter season in southeastern Brazil when irrigated type III common beans are generally sown 0.5 m apart with 10 to 12 plants per meter. The aim of this study was to evaluate the efficacy of combining increased row width (RW) and reduced planting density (PD), with or without fungicide, for white mold management. Treatments were arranged as a 2³ factorial: RW (0.50 or 0.75 m), PD (6 or 12 plants per meter), and fungicide (sprayed or unsprayed). Two trials were conducted in Viçosa, State of Minas Gerais. In 2002, the average incidence of white mold was 43.2%, the severity index, 31.1%, and the yield, 2513 kg ha-1. In 2003, the values of these variables were 48.0%, 22.6%, and 2159 kg ha-1, respectively. Interactions involving both RW and PD were not significant for either disease intensity or yield in the combined analysis across years. Increasing RW led to reduction in white mold intensity in 2002. The lower PD reduced disease incidence in 2002 and did not affect yield in the combined analysis. In fungicide sprayed plots, wide RW decreased yield in 2002, but RW did not affect yield in 2003. In unsprayed plots, RW did not affect yield in both years. We conclude that increasing RW to 0.75 m combined with low PD is a promising strategy for white mold management when fungicide is not applied. When fungicide is applied, the current row width (0.50 m) combined with low PD maximize the yield.

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