A5066532834- Growth and nutrition in plants
- Plant pathogens and resistance mechanisms
- Agronomic Practices and Intercropping Systems
- Soil Management and Crop Yield
- Soybean genetics and cultivation
- Banana Cultivation and Research
- Plant Disease Management Techniques
- Plant Pathogens and Fungal Diseases
- Agricultural and Food Sciences
- Legume Nitrogen Fixing Symbiosis
- Plant Micronutrient Interactions and Effects
- Genetics and Plant Breeding
- Plant Pathogenic Bacteria Studies
- Agricultural pest management studies
- Weed Control and Herbicide Applications
- Plant Surface Properties and Treatments
- Seed Germination and Physiology
- Rural Development and Agriculture
- Peanut Plant Research Studies
- Pesticide and Herbicide Environmental Studies
- Plant nutrient uptake and metabolism
- Plant-Microbe Interactions and Immunity
- Agricultural Science and Fertilization
- Rice Cultivation and Yield Improvement
- Agriculture, Plant Science, Crop Management
Empresa de Pesquisa Agropecuária de Minas Gerais
2012-2024
Brazilian Agricultural Research Corporation
2005-2024
University of Lisbon
2024
Universidade Federal de Viçosa
2019-2022
Universidade Estadual do Maranhão
2022
Pennsylvania State University
2013
Root architectural phenes enhancing topsoil foraging are important for phosphorus acquisition. In this study, the utility of a novel phene is described, basal root whorl number (BRWN), that has significant effects on in common bean (Phaseolus vulgaris). Whorls defined as distinct tiers roots emerge tetrarch fashion along base hypocotyl. Wild and domesticated taxa well two recombinant inbred line (RIL) populations were screened BRWN (BRN). A set six RILs contrasting was evaluated performance...
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 efficacy decreasing within-row densities for an indeterminate growth habit (type IIIa) cultivar, keeping constant between-row spacing 0.5 m, manage disease. A modification plant distributions also attempted order reduce white intensity. The with sprinkler irrigation two growing seasons (2000 and...
Sclerotinia sclerotiorum , causal agent of white mould, is the most destructive and widely distributed soilborne pathogen common bean during autumn–winter season in B razil. Nevertheless, little known about genetic structure population. Microsatellite ( SSR ) markers mycelial compatibility groups MCG s) were used to characterize 118 isolates collected from 20 fields located important growing regions M inas G erais S tate MG ). Additionally, variability among 10 obtained a single sclerotium...
Thiophanate-methyl (TM), fluazinam, and procymidone are fungicides extensively used for white mold control of common bean in Brazil. We assessed the sensitivity Brazilian isolates Sclerotinia sclerotiorum to these three using discriminatory doses concentration that results 50% mycelial growth inhibition (EC50) values. In total, 282 from most important production areas were screened none was resistant fluazinam or procymidone. The EC50 values varied 0.003 0.007 0.11 0.72 μg/ml procymidone,...
Abstract Although common bean (Phaseolus vulgaris L.) has a good potential for N2 fixation, poor nodulation following inoculation, principally under field conditions, led to increased nitrogen (N) fertilizer use in this crop. In the face of negative environmental effects N fertilizer, alternative methods have been studied minimize amount be applied. sense, foliar application molybdenum (Mo) cited as promising method. Several papers show that high yields (1,500–2,500 kg ha‐1), may obtained...
The purpose of this study was to characterize the genetic variability in 100 genotypes Active Germplasm Bank common bean Federal University Viçosa, by morphological descriptors, classify them groups similarity and identify degree relevance descriptors divergence. were evaluated based on 22 quantitative qualitative descriptors. high-yielding V 7936, Gold Gate, LM 95103904, 1829 S 349 Venezuela, PF 9029975, CNFC 9454 Fe 732015, with upright growth, have potential for use as parents breeding...
The objective of this study was to understand the infection process Fusarium oxysporum f. sp. phaseoli (Fop) in bean cultivars classified as resistant (Manteigão Fosco 11), intermediate (VP8) and susceptible (Meia Noite). Plants three were inoculated at 10 days after emergence with a suspension 1×10(6) conidia Fop per mL. At 43 inoculation, stem segments observed scanner electronic microscope. Manteigão 11 VP8 presented an occluding material xylem vessels, which may have restricted tissue...
The purpose of this study was to evaluate the efficiency integrated managements on white mold control common bean. Initially, in vitro testing made assess antagonism 11 Trichoderma isolates against Sclerotinia sclerotiorum and investigate fungicides (fluazinam procymidone) inhibitory effects those fungi. In two field experiments following combinations were tested: irrigation frequencies (seven or 14 days), plant densities (six 12 plants per meter), three disease controls (untreated control,...
A escolha e o uso adequado de bicos pulverização são essenciais para a correta aplicação agrotóxicos. Este trabalho teve como objetivo avaliar espectro gotas hidráulicos jato plano padrão cônico vazio, com diferentes vazões nominais. Em ambiente controlado, avaliou-se por meio um analisador laser em tempo real, nas faixas pressão 200 400 kPa os plano, 600 vazio. Realizou-se também estudo teórico sobre distância horizontal percorrida tamanho conhecido. Os vazio apresentaram menor relação aos...
The cultivar BRSMG Madrepérola, recommended for cultivation in Minas Gerais, has the feature of maintaining a light grain color longer period than other Carioca cultivars. yield potential is high and resistance level good to major anthracnose races region.
he Discussion is the hardest section of a scientific article to write, as cognitive skills must be used properly contextualize findings study. In this article, we guide writers, particularly unexperienced ones, on how structure based an by Docherty and Smith (1999). According these authors, discussion should prepared organizing information in following order: (a) statement principal findings; (b) strengths weaknesses study; (c) relation other studies, discussing any differences results; (d)...
Abstract: The objective of this work was to evaluate the effects split and combinated application foliar zinc (ZnF) + soil Zn (ZnS) on concentration in grains (ZnCG) common bean (Phaseolus vulgaris). Two experiments were carried out a greenhouse during two seasons. In first experiment, cultivars received six ZnF rates (0, 120, 240, 480, 720, or 1,200 g ha-1), with applications at R5, R7, R8, R7 R8 plant stages. second one cultivar three ZnS 5, 10 kg ha-1) combined 1, 1.5, 3, 6, ha-1)....
The objective of this work was to test a simple method for root hair evaluation 21 common bean (Phaseolus vulgaris) genotypes, most them used in breeding programs Brazil. Hairs basal and primary roots 5-day old seedlings, produced on germination paper with no phosphorus addition, were visually evaluated by rating scale after staining 0.05% trypan blue. reveals variability among the standard error mean is relatively low.
White mold (Sclerotinia sclerotiorum) is the most important common bean disease during fall-winter season in Brazil.Different control strategies are necessary to this and increase yield infested areas.The aim of research was evaluate effect application calcium chloride (CaCl 2 ) silicate (CaSiO 3 on white bean.The experiment carried out 2006 Viçosa MG, Brazil, a field naturally with sclerotia.Both CaCl CaSiO were applied at 45 days after emergence (DAE) (early bloom) over plants hand sprayer...
Molybdenum (Mo) reserve in large seeds can complement Mo uptake by plants from soil, but the content of common bean ( Phaseolus vulgaris L.) seed for this purpose is unknown. We hypothesized that 3.639 ± 0.751 μg −1 would be sufficient to irrigated a Mo‐poor soil. Three field experiments were performed clayey Ultisol naturally infested native strains Rhizobium Zona da Mata, Minas Gerais, Brazil. Treatments arranged as 4 × 2 factorial combination contents [small (0.007 0.007 or 0.248 0.057 )...
Abstract Three field trials were conducted with common bean. In the first trial, effects of molybdenum (Mo) rates as foliar application on yield and Mo content seeds studied. other trials, a factorial 4×2 was used to investigate four contents either or without application. first, cv. 'Pérola' 0.027 μ g seed−1 in following treatments: (a) untreated control, (b) 90 ha−1 at 21 days after emergence (DAE), (c) 180 ha− 1 DAE, (d) 360 (e) 720 (f) 17 DAE + 23 (g) 1440 (h) (i) 27 32 DAE. All plots...
The objective of this work was to assess root traits 19 common bean genotypes, used in breeding programs for disease resistance. Genotypes DOR 364 and G 19833 were as deep shallow basal checks, respectively. number whorls roots assessed on five-day old seedlings grown germination paper. Growth pouch studies conducted evaluate gravitropism lateral length from primary roots, seven-day seedlings. following gravitropic estimated: growth angle, (localized the top 2 cm), relative growth. Number...
Understanding how Sclerotinia sclerotiorum aggressiveness varies among isolates may be useful for breeding programs aimed at developing common bean cultivars resistant to white mold. The of 20 S. collected in fields from four Brazilian states was tested against two genotypes (Pérola and A195) using inoculation methods. were characterized 10 microsatellite (SSR) loci, mycelial compatibility groups (MCGs), partial sequences the oxaloacetate acetylhydrolase (OAH) gene, morphological traits....
Common bean breeding programs for white mold (WM) resistance are in their initial stages Brazil. Sources of partial to WM available abroad but performance Brazil is unknown. In two greenhouse (straw test) and three field experiments conducted districts the state Minas Gerais, Brazil, we evaluated a total 23 lines with putative objective select other diseases associated high yield potential. Two field-resistant local lines, susceptible cultivars, international were also included study....
A tecnologia de aplicação agrotóxicos visa à colocação uniforme do produto no alvo, com mínima perda por escorrimento e deriva. Este trabalho teve como objetivo avaliar a deposição deriva calda fungicida pulverizada em feijoeiro diferentes bicos volumes aplicação. Empregou-se o delineamento blocos ao acaso, quatro repetições, esquema fatorial (2 x 2): dois tipos bico pulverização (jato plano standard jato cônico vazio) (125 250 L ha-1). O estudo foi realizado analisando-se distribuição um...
Fusarium root rot (FRR) is a distributed disease of common beans in Brazil. Our main aim was to verify if there are genotypes, mainly advanced lines from the bean breeding program with levels resistance FRR similar those line A-300. We also compared three developmental stages for assessment. Genotypes six classes were evaluated greenhouse and field experiments. In greenhouse, substrate infested chlamydospores. field, genotypes screened area solani f. sp. phaseoli. Plants rated at V3, R5 R7...
This study aimed to determine whether foliar sprays of potassium silicate (KSi), sodium molybdate (NaMo), or a combination both (KSi + NaMo), with without the fungicide azoxystrobin (Azox), could reduce anthracnose symptoms and, consequently increase yield. Two two-by-four factorial experiments, consisting untreated treated, as well KSi, NaMo, KSi and no spray (control), were arranged in randomized block design three replications. Treatments follows: treatment 1, spray; 2, NaMo 3, 4, Azox 5,...
The common bean cultivar "BRSMG Realce", recommended for the state of Minas Gerais, has high yield potential and resistance to powdery mildew, bacterial wilt anthracnose pathotypes 65, 73, 77, 81, 91, 475 479. plants pods are high, resulting in lower loss during mechanical harvest.