Influência das variáveis ambientais no progresso da antracnose do feijoeiro e eficiência de tiofanato metílico + clorotalonil no controle da doença

García, Ana Luz Cuervo; Souza, Paulo Estevão de; Pozza, Edson Ampélio; Santos, Flávia de Souza

doi:10.1590/s1413-70542007000600016

Cited by 6 publications

(4 citation statements)

References 3 publications

(1 reference statement)

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“…Also found that bean crop remains interfere with both incidence and severity of anthracnose, and the higher the level of inoculum in seeds under favorable environmental conditions, the higher the disease progression and thus the lower the yield. Similar results were obtained by Garcia et al (2007) in the same region with significant negative correlation of anthracnose severity with grain yield. High severity levels in most bean growing seasons were deemed a risk factor affecting crop yield.…”

Section: Discussionsupporting

confidence: 86%

“…With regard to spatial expansion of C. lindemuthianum from an inoculum source, Pinto et al (2001) from Lavras, state of Minas Gerais, found significant difference in AUDPC between two planting seasons. Studies by Garcia et al (2007) also showed differences in incidence and severity of disease depending on the season. These results can be attributed to favorable climatic conditions for supporting the pathogen.…”

Section: Discussionmentioning

confidence: 96%

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Influence of Contaminated Crop Remains and Seed Health Quality on the Intensity of Bean Anthracnose

Silva¹,

Pozza²,

Machado³

2013

JAS

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Bean anthracnose, caused by the fungus Colletotrichum lindemuthianum, is a major seed borne disease of beans, interfering with the progress of the disease timeline. Work involving the study of cultural remains are scarce. The effects of different incidences of that pathogen in seeds in combination with cultivating areas with and without contaminated crop remains were evaluated on the anthracnose incidence and severity and on yield. In the trial set up in December 2009 the cultivation of bean in area with contaminated crop remains had greater progress for both incidence and severity of the disease compared with the area without crop remains. There was interaction between infection levels in seeds with or without contaminated crop remains in both growing areas. In the trial set up in April 2010 progress of anthracnose was similar in both growing areas. Grain yield was higher in the area without crop remains in both trials. The results of this work showed that the behavior of anthracnose under field conditions differ among areas studied (with and without crop residues) and also due to the environmental conditions of a planting to another.

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Section: Discussionsupporting

confidence: 86%

Section: Discussionmentioning

confidence: 96%

Influence of Contaminated Crop Remains and Seed Health Quality on the Intensity of Bean Anthracnose

Silva¹,

Pozza²,

Machado³

2013

JAS

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“…Em milho, Donato e Bonaldo (2013) reduziram a severidade de Cercospora zea-maydis e de Puccinia polysora com o uso de estrobilurinas (Trifloxistrobina), as quais inibem a respiração mitocondrial dos fungos. Já Garcia et al (2007) recomendam a pulverização com misturas de princípios ativos, pois além de reduzir a doença, evita o surgimento de resistência a fungicidas, o que segundo este autor, põe em risco o controle fitossanitário, contrapondo o uso contínuo de um mesmo produto que pode promover a seleção de fungos resistentes.…”

Section: Resultsunclassified

Untitled

2020

Agrotrópica

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Influência da idade da folha de Hevea brasiliensis (Euphorbiaceae) na oviposição e parasitismo de ovos de Leptopharsa heveae (Hemiptera: Tingidae). R. S. Santos. Tratamento sanitário e qualidade fisiológica de sementes de Palmade-Óleo recém-colhidas e armazenadas submetidas a diferentes fungicidas. A. Q. Cysne, R. Lopes, R. N. V. da Cunha. Resistência de acessos de Passiflora spp. ao ataque de Agraulius vanillae vanillae. T. E. Ferreira, F. G. Faleiro, J. da S. Oliveira. Divergência genética entre genótipos de arroz submetidos à salinidade durante o estádio de plântula.

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“…This result corroborates the findings of Fageria and Santos (2008), who stated that increased NPP resulted in increased GY. The results from conventional production systems have shown that decreases in productivity components and grain yield of common bean are related to competition from weeds and, the occurrence of diseases, and/or insect attacks (Garcia et al, 2007;Cunha et al, 2006;Salgado et al, 2007). In organic production systems, these problems may be more pronounced because the use of agrochemicals is not allowed, which makes it difficult to control weeds, insects, and diseases.…”

Section: Discussionmentioning

confidence: 99%

Green Manure Species and Sowing Time Effects on the Agronomic Performance of Common Bean

2013

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An evaluation of sowing date effects on the development of green manure species and the subsequent effects on the agronomic performance of common bean (Phaseolus vulgaris L.) was conducted using three consecutive years of field trials. A randomized block design was used with a factorial treatment structure of 3 yr, three sowing dates and five green manure species {sunn hemp [Crotalaria juncea L.], slender leaf rattlebox [C. ochroleuca G. Don], velvet bean[Mucuna pruriens L.], pigeon pea [Cajanus cajan (L.) Millsp.], and jack bean [Canavalia ensiformis (L.) DC.]}, aiming to determine the agronomical performance of common bean in response to species and sowing date of different green manures. The dependent variables used to evaluate green manure development were "green manure shoot dry mass (GMSDM), green manure N accumulation (GMNA) and green manure nitrogen accumulation efficiency (GMNAE)". For common bean "common bean leaf area index (CBLAI), common bean shoot dry mass (CBSDM), number of pods per plant (NPP), number of grains per pod (NGP), total of grains per plant (TGP), 100-grain weight (100GW), grain yield (GY), grain harvest index (GHI), and nitrogen use efficiency (NUE)" were used to evaluate common bean performance. The GMSDM and GMNA both decreased when the green manure were sown in February rather than November, with the exception of velvet bean. Although the GMNA varied with year, species, and planting date, values above 90 kg ha -1 were common after November and December sowing and were sufficient to ensure good GY levels of subsequent common bean. Pigeon pea stood out because of its positive effect on the CBLAI, CBSDM, and NUE values of subsequent common bean. The GMNAE, NPP, NGP, NUE, and GHI were significantly correlated with GY. The best combination of these variables resulted in a common bean GY of 2000 kg ha -1 , which is 57% higher than the Brazilian average. These results indicate that the use of green manure can contribute to the sustainability of organic production systems in tropical regions.

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Influência das variáveis ambientais no progresso da antracnose do feijoeiro e eficiência de tiofanato metílico + clorotalonil no controle da doença

Cited by 6 publications

References 3 publications

Influence of Contaminated Crop Remains and Seed Health Quality on the Intensity of Bean Anthracnose

Influence of Contaminated Crop Remains and Seed Health Quality on the Intensity of Bean Anthracnose

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Green Manure Species and Sowing Time Effects on the Agronomic Performance of Common Bean

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