Efeito do espaçamento e da cultivar de feijoeiro sobre a intensidade do mofo-branco e a sanidade de sementes

Napoleão, Reginaldo; Filho, Adalberto Corrêa Café; Lopes, C. A.; Nasser, Luiz Carlos Bhering

doi:10.1590/s0100-54052006000100009

Cited by 4 publications

(3 citation statements)

References 10 publications

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“…In the treatment F2 (with fungicide application), there was no significant effect of planting density, since the presence of sclerotia was not observed. Napoleão et al (2006) tested three spacings between common bean rows (30, 45 and 60 cm), varying and maintaining the spacing between plants. In both cases, maintaining or not the same planting density, the authors observed that the percentage of plants infected by white mold and the severity of the disease were not significantly affected by the tested spacings.…”

Section: Resultsmentioning

confidence: 99%

“…Venegas & Saad (2010) and Machado et al (2015) claim that white mold is the main limiting disease in the common bean cultivation in the winter. In this period, irrigation promotes favorable conditions to the disease, which finds adequate temperature and humidity (Napoleão et al, 2006). With the increase in the irrigated areas cultivated with common bean, white mold has become the disease with highest economic importance, being able to cause 100% of losses in its production (Lobo Júnior et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

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Incidence and severity of white mold in common bean submitted to different cultivation practices

Montes

Oliveira

Giovanelli

et al. 2017

Rev. bras. eng. agríc. ambient.

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A B S T R A C TDue to the socioeconomic importance of common bean in Brazil, studies that allow establishing favorable conditions for not compromising the crop with white mold, in view of the enormous damages caused by this fungus, become vital to Brazilian agriculture. Therefore, the aim of this study was to evaluate the incidence and severity of white mold in common bean (Phaseolus vulgaris L.), cultivar 'Madrepérola' , subjected to different irrigation intervals, planting densities and fungicide application. The research was conducted in Viçosa-MG, Brazil, in the years 2011 and 2012. The statistical analysis used the splitsplit-plot scheme. The fungicide applications (with or without fungicide) were allocated to plots, the irrigation intervals (3, 6, 9 and 12 days) to sub-plots and planting densities (6, 9, 12 and 15 plants per linear meter) to sub-subplots, in a randomized block design with three replicates. The variation of the irrigation intervals did not contribute significantly to the control of white mold. It is recommended to use lower planting densities in order to minimize the damages caused by the disease. The use of the fungicide was the main method of white mold control in two consecutive years.Incidência e severidade do mofo-branco no feijoeiro submetido a diferentes tratos culturais R E S U M O Devido à importância socioeconômica do feijoeiro no Brasil, estudos que permitem estabelecer condições favoráveis ao não comprometimento da lavoura com o mofo-branco tornam-se vitais para a agricultura brasileira, haja vista os enormes prejuízos causados por este fungo, , razão por que se objetivou, neste trabalho, avaliar a incidência e severidade do mofo-branco na cultura do feijoeiro-comum (Phaseolus vulgaris L.), cultivar Madrepérola, submetido a diferentes turnos de rega, densidades de plantio e aplicação de fungicida. A pesquisa foi conduzida em Viçosa, nos anos 2011 e 2012. Na análise estatística foi utilizado o esquema de parcelas sub-subdivididas. Nas parcelas foi alocado o efeito do fungicida (com ou sem fungicida), nas subparcelas os turnos de rega (3, 6, 9 e 12 dias) e nas sub-subparcelas as densidades de plantio (6, 9, 12 e 15 plantas por metro linear), no delineamento experimental em blocos casualizados, com três repetições. A variação do turno de rega não colaborou significativamente para o controle do mofo-branco. Recomenda-se a utilização de menores densidades de plantio a fim de minimizar os danos ocasionados pela doença. A utilização do fungicida foi o principal método de controle do mofo-branco nos dois anos consecutivos.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Incidence and severity of white mold in common bean submitted to different cultivation practices

Montes

Oliveira

Giovanelli

et al. 2017

Rev. bras. eng. agríc. ambient.

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“…Neste contexto, a adoção do manejo integrado torna-se uma estratégia adequada para atender ao propósito de eficiência e sustentabilidade no controle de doenças. No entanto, pouco avanço se obteve no conhecimento sobre o manejo cultural da ferrugem-asiática da soja, principalmente com relação ao arranjo de plantas.O efeito do arranjo de plantas e do espaçamento entre linhas de semeadura tem sido estudado por diversos pesquisadores para as mais variadas culturas (3, 4, 5, 8, 11, 12, 13,14,15,16,17,22). Na cultura da soja, o espaçamento entre linhas interfere na população e crescimento de plantas daninhas (3), no índice de área foliar, na velocidade de fechamento das entrelinhas (13) e no rendimento de grãos (12,14).…”

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Espaçamento entre linhas e severidade da ferrugem-asiática da soja

Roese¹,

Melo²,

Goulart³

2012

Summa phytopathol.

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In Brazil, soybeans are traditionally sown in rows spaced from 45 to 50 cm. Changes in such a spacing may alter the microclimate and the efficiency of fungicide a pplication. This study a imed to verify the influence of different row spaces on the severity of soybean rust and on the grain yield of soybean cultivars BRS 256 RR, BRS 246 RR and BRS 318 RR, respectively, in 2007/2008, 2009/2010 and 2010 and 65 cm) were tested, with and without fungicide spraying over the shoot of plants.Roese, A.D.; Melo, C.L.P.; Goulart, A.C.P. Row spacing and Asian soybean rust severity. Summa Phytopathologica, v.38, n.4, p.300-305, 2012.The efficiency of fungicide spraying was confirmed for disease control in the three crop seasons and row spacing was not significant for any va ria ble assessed in the first crop sea son, when the disease started before flowering. In the second a nd third crop sea sons, when the disease started during full flowering and the severity was lower than in the first crop season, row spacing influenced the yield in plots without fungicide for cultivar BRS 246 RR (second crop season) and the disease severity for cultivar BRS 318 RR (third crop season).No Brasil, a cultura da soja é tradicionalmente semeada em linhas espaçada s de 45 cm a 5 0 cm. Alterações nesse espaçamento podem mudar o micro clima e a eficiência de aplicação de fungicidas. Este tra ba lho teve como objetivo estu da r a influ ência de diferentes espaçamentos na severidade da ferrugem-asiática e na produtividade da s cu ltivares de soja BRS 256 RR, BRS 24 6 RR e BRS 3 18 RR, respectiva mente na s sa fra s 2 0 07 /2 0 0 8 , 2 0 0 9 /2 0 1 0 e 2 0 1 0 /2 0 1 1 . Foram avaliados quatro espaçamentos entre linhas (35, 45, 55 e 65 cm), com e sem aplicação de fungicida na parte aérea das planta s.Roese, A.D.; Melo, C.L.P.; Goulart, A.C.P. Espaçamento entre linhas e severidade da ferrugem-asiática da soja. Summa Phytopathologica, v.38, n.4, p.300-305, 2012. Confirmou-se a eficiência do fungicida no controle da doença nas três sa fra s e observou -se qu e o espa ça mento entre linha s nã o foi significa tivo para nenhuma va riável avaliada na primeira sa fra do experimento, qua ndo a doença iniciou a ntes do florescimento. Na segunda e terceira safras, quando a doença iniciou no florescimento pleno e a severida de fina l foi menor qu e na primeira sa fra , o espa ça mento entre linhas influ enciou a produ tivida de na s pa rcelas sem fungicida da cultivar BRS 246 RR (na segunda safra) e a severidade da doença na cultivar BRS 318 RR (na terceira safra).Additional keywords: plant arrangement, Phakopsora pachyrhizi, Glycine max, cultural control. ABSTRACTA ferrugem-asiática da soja, causada pelo fungo Phakopsora pachyrhizi Syd. & P.Syd., tem sido, desde sua detecção no Brasil (25), um dos principais desafios fitopatológicos para essa cultura. Até o momento, a única forma de controle da doença, após sua instalação na lavoura, é por meio da aplicação de fungicidas, o que onera os custos da lavoura. Além disso, o seu uso contínuo, como única estrat...

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White Mold Management in Common Bean by Increasing Within-Row Distance Between Plants

et al. 2010

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White mold of common bean (Phaseolus vulgaris), caused by Sclerotinia sclerotiorum, is a major yield-limiting disease during the fall-winter season in Brazil. This study was conducted to evaluate the efficacy of decreasing within-row densities for an indeterminate growth habit (type IIIa) cultivar, keeping constant the between-row spacing of 0.5 m, to manage the disease. A modification of within-row plant distributions was also attempted in order to reduce white mold intensity. The study was conducted with sprinkler irrigation in two growing seasons (2000 and 2001) in Viçosa, State of Minas Gerais, Brazil, in an area naturally infested with sclerotia. In 2000, treatments were arranged as 3 × 2 × 2 factorial combination of within-row densities (15, 7.5, or 5 plants/m), within-row plant distributions (single and equidistant plants or equidistant groups of three plants), and fluazinam treatments (with or without). In 2001, 16, 12, 8, or 4 plants/m were combined with fluazinam treatments. Fluazinam was applied at both flowering onset and 10 or 13 days later. Average incidence was 92.6% in 2000 and 77.8% in 2001; severity index was 69.8% in 2000 and 40.2% in 2001; and yield was 1,656 kg/ha in 2000 and 2,542 kg/ha in 2001. White mold decreased and yield increased as within-row densities were reduced, regardless of fluazinam treatments. A distribution of equidistant groups of three plants was ineffective in reducing disease. The use of 4 equidistant plants/m in infested irrigated areas was an effective strategy in white mold management.

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Efeito do espaçamento e da cultivar de feijoeiro sobre a intensidade do mofo-branco e a sanidade de sementes

Cited by 4 publications

References 10 publications

Incidence and severity of white mold in common bean submitted to different cultivation practices

Incidence and severity of white mold in common bean submitted to different cultivation practices

Espaçamento entre linhas e severidade da ferrugem-asiática da soja

White Mold Management in Common Bean by Increasing Within-Row Distance Between Plants

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