A5086801757- Plant Pathogens and Fungal Diseases
- Plant Disease Management Techniques
- Yeasts and Rust Fungi Studies
- Agricultural and Food Sciences
- Growth and nutrition in plants
- Allelopathy and phytotoxic interactions
- Plant Disease Resistance and Genetics
- Weed Control and Herbicide Applications
- Phytochemistry Medicinal Plant Applications
- Plant-Microbe Interactions and Immunity
- Mycorrhizal Fungi and Plant Interactions
- Ginkgo biloba and Cashew Applications
- Pesticide and Herbicide Environmental Studies
- Seed Germination and Physiology
- Forest ecology and management
- Plant and fungal interactions
- Banana Cultivation and Research
- Essential Oils and Antimicrobial Activity
- Chemical synthesis and alkaloids
- Forest Insect Ecology and Management
- Forest Biomass Utilization and Management
- Wood Treatment and Properties
- Agronomic Practices and Intercropping Systems
- Powdery Mildew Fungal Diseases
- Agricultural Science and Fertilization
Universidade Regional Integrada do Alto Uruguai e das Missões
2023
Universidade Federal de Santa Maria
2013-2022
Universidade Federal de Pelotas
2022
Universidad Nacional de San Agustin de Arequipa
2022
The objective of this work was to produce an herbicide by submerged fermentation in a stirred-tank bioreactor and assess the potential herbicidal pre-emergence, post-emergence, detached leaves Cucumis sativus var species. wisconsin (cucumber) Sorghum bicolor (sorghum) Fermentations were carried out with useful volume 3L. Stirring rate (40, 50, 60 rpm) aeration (1, 2 3 vvm) variables studied for bioherbicide production. Fermented broth fractioned different solvents identify molecules produced...
This study is focused on the concentration of fermented broth from Phoma sp. to increase its herbicidal activity. For this purpose, biomolecules produced by submerged fermentation using were concentrated hollow fiber microfiltration membranes. The membrane feed was separated into two streams (retentate and permeate) crude 10, 30, 50, 70 90% (relative initial volume). retentate samples submitted bioassays (triplicate) for evaluating their phytotoxic effects five young leaves species Cucumis...
Weed control is a critical factor to ensure productivity and quality for food production. Chemical the main method used worldwide, but demand healthier farmers' health environment concerns have led an increase in search alternative methods. In this way, use of biomolecules produced by microorganisms that present phytotoxic activity against weeds, such as exopolysaccharides, attracting attention. For purpose, work compared two techniques (solid-state submerged fermentation) bioherbicide...
Fungi are considered the most damaging microorganisms in agriculture. The indiscriminate use of chemical treatments agricultural products causes development pest resistance and affects human health. An alternative to synthetic fungicides is natural such as plant extracts for management fungal diseases plants. Extracts from different parts Lupinus albescens (roots, stalks, leaves, flowers) were obtained by extraction using supercritical carbon dioxide (CO2) or compressed liquefied petroleum...
This study describes the use of spray drying technology to obtain a powder containing biomolecules with herbicidal activity produced by submerged fermentation using Diaporthe schini. The efficiency bioherbicide was tested for post-emergence control Bidens pilosa L., Amaranthus viridis Echinochloa crusgalli (L.) Beauv., and Lolium multiflorum Lam. In first step, different additives were used lactose most suitable one because it resulted in high weed suppression. second process variables...
O uso de agentes biocontroladores no controle doenças em plantas é uma alterativa aos produtos químicos que vem conquistando seu espaço, isso, devido a nossa condição atual proteção e manutenção do meio ambiente. Muitos organismos antagonistas apresentam potencial tanto para o fitopatógenos, quanto promoção desenvolvimento plântulas. presente estudo objetivou avaliar ação antagonista seis biológicos (Trichodermil®, Trichodel®, Quality®, Rizos®, Rizolyptus® Nutrisolo®) cepa bacteriana...
Recent studies have observed symptoms of leaf spot in pecan (Carya illinoinensis ) associated with species the Cladosporium cladosporioides complex (C. cladosporioides, C. pseudocladosporioides , and subuliforme). Therefore, present study aimed to investigate pathogenicity these spp. isolated from two cultivars. Twenty-six isolates were used inoculate leaflets cultivars, 'Barton' 'Shawnee', a spore suspension. The suspension was applied through drops on surface leaflets, material kept boxes,...
A madeira juvenil em maior proporção no fuste e suas características físicas, mecânicas, químicas anatômicas diminuem a qualidade do material. Esse estudo teve como objetivo estimar idade de segregação lenho adulto pelo comprimento dos traqueoides Pinus elliottii Engel, aos 30 anos idade. Para tanto, seis árvores foram selecionadas, com base diâmetro dominante, um povoamento localizado Colégio Agrícola Frederico Westphalen/UFSM. Após o abate, disco correspondente 0,15 metros altura, marcadas...
Este trabalho objetivou avaliar a influencia do diâmetro das toras de Eucalyptus globulus Labill na secagem ao ar livre, que foi realizada no municipio Encruzilhada Sul – RS, entre agosto 2011 e abril 2012. Para tanto, foram colhidas 32 arvores, quais utilizadas apenas as primeiras toras, 2,20 m comprimento, distribuidas em quatro classes (5-10, 10-15, 15-20 20-25 cm). Apos determinacao da umidade inicial, o acompanhamento realizado por pesagens periodicas 15 dias. Os dados submetidos...
The cultivation of pecan tree [Carya illinoinensis (Wangenh.) K. Koch.] is expanding in Rio Grande do Sul state and, with that, there has been an increase the disease reports. Among diseases identified, a root rot caused by Fusarium spp. control phytopathogenic fungi present soil difficult to obtain, and through antagonists such as Trichoderma viable way management. Thus, objective this work was analyze different forms action asperellum antagonistic evaluated paring cultures, presence...
Juglans regia e Carya illinoinensis, ambas da família Juglandaceae, são espécies de nogueiras conhecidas mundialmente pela produção das chamadas nozes, com crescente expansão área cultivada na América do Sul. Entretanto, nos últimos anos houve aumento incidência doenças nessas espécies, o que compromete a rentabilidade dos cultivos qualidade produto. Colletotrichum nymphaeae foi recentemente identificado no Brasil causando danos em frutos regia. Este estudo teve como objetivo avaliar...
ABSTRACT Pecan tree [Carya illinoinensis (Wangenh.) K. Koch] is a widespread species in the southern region of Brazil and commercially important for nut wood production. Stem cankers pecan trees negatively impact orchard, but biotic causes are usually not identified. Symptoms stem canker were observed about 60% from orchards states Rio Grande do Sul Paraná. Therefore, this study aimed to analyze molecular morphophysiological characteristics fungi associated with confirm their pathogenicity...
Cassia fistula L., conhecida popularmente como chuva-de-ouro, é uma planta com características ornamentais e, por isso, muito empregada na arborização urbana, entretanto apresenta manchas foliares causadas Colletotrichum gloeosporioides que podem comprometer o desenvolvimento da planta. Apesar severidade doença e dos danos causados, não há relatos de medidas controle a serem aplicadas. Portanto, objetivo deste trabalho foi avaliar potencial efeito antagonista in vitro Trichoderma spp. sobre...
Casuarina (Casuarina equisetifolia L.) is a species used like wind break, in streets ornamentation, soils conservation and dunes fixation. The main form of propagation this by seeds, although, nursery, the fungus Fusarium lacertarum have been cause damping-off seedlings. Thus, objective work was to characterize morphologically, physiologically molecularly pathogen. To molecular characterization, pure colonies were cultivated PDA LCA culture media, for physiological PDA, SNA, Mathur V8 media....
A soja é uma das principais culturas do agronegócio mundial, e o Brasil se destaca por ser um dos maiores produtores dessa leguminosa. As doenças, especialmente causadas patógenos habitantes solo interferem significativamente no desenvolvimento produtividade da cultura, serem de difícil controle. O objetivo desse trabalho foi avaliar biocontrole Fusarium solani agente causal podridão vermelha raiz na soja, isolados Trichoderma spp. Para isso, avaliado efeito antagonistas in vitro sobre...
Juglans regia L., known as Persian walnut, is native to central Asia, where plantations are spread over several countries. The species has a certain importance humanity, e.g. high quality of the wood. However, main purpose cultivation obtain edible nuts. In Brazil, fungus Colletotrichum nymphaeae significantly damaged fruit and consequently affected nut production. Thus, objective this study was verify pathogenicity identify, morphologically molecularly, isolates spp. collected from with...
HomePlant DiseaseVol. 106, No. 9First Report of Cercospora cf. malloti Causing Brown Eyespot on Strawberry in Brazil PreviousNext DISEASE NOTE OPENOpen Access licenseFirst BrazilJaqueline Raquel Tomm Krahn, Marlove Fátima Brião Muniz, Tales Poletto, Vinícius Spolaor Fantinel, Alexsandra Cezimbra Quevedo, Marisa Ana Strahl, Leonardo Fellipe da Silva Cruz Couto, Jessica Emília Rabuske, and Julio Carlos Pereira SilvaJaqueline Krahnhttps://orcid.org/0000-0001-8289-2126Universidade Federal de...
One of the limiting factors for pecan production is incidence disease caused by Fusarium spp. which are a threat to orchards in south country. Therefore, study aimed confirm pathogenicity and evaluate morphophysiological molecular characteristics associated with Rio Grande do Sul Paraná. For this, samples symptomatic plant material were collected, potentially pathogenic isolates evaluated pathogenicity, immersing roots plants spore suspension In addition, severity was assessed using rating...