Felipe Rafael Garcés-Fiallos

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Verified

Felipe Rafael verified their affiliation via an institutional email.

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• DSc
• Professor (Full) at Universidad Técnica de Manabí

Black root rot, caused by Macrophomina phaseolina (Tass.) Goid., is the most common root disease in soybean fields. This study aimed to determine the in vitro mycelial sensitivity, measured by the IC50 (concentration to inhibit 50% of the fungus mycelial growth) of a M. phaseolina isolate obtained from soybean, to different fungicides (thiram, ipro...

This study aimed to evaluate the resistance of 17 black bean genotypes artificially and naturally infected with Fusarium oxysporum f. sp. phaseoli under greenhouse and outdoor growing conditions, respectively, and compare the disease progress and bean yield components of the resistant line UFSC-01 and susceptible cv. Uirapuru. Five lines and one la...

This work was aimed at comparing the spatial-temporal colonization of F. oxysporum f. sp. phaseoli (Fop) in the resistant line UFSC-01 with that in the progenitor susceptible cv. Uirapuru. Disease incidence and severity, vascular discoloration in hypocotyls, colony forming units (cfu) and ergosterol were quantified on root, hypocotyl and epicotyl t...

This study aimed at investigating the role of enzymes related to the oxidative metabolism and hydrogen peroxide in susceptible and resistant plants of common bean to Fusarium oxysporum f. sp. phaseoli (Fop). Fop inoculation increased H2O2 levels only in roots of resistant plants. Despite this, no hypersensitive cells were induced. In the enzymatic...

The challenges of food security rely on highly technical productive systems. Monocultures, on the other hand, are reliant on a high input load, negatively impact soil conservation, affecting edaphic biota and generating biological degradation. The study aimed to evaluate the sustainability of Agricultural Productive Units (APU) dedicated to soybean...

Phytophthora capsici can induce severe economic losses in the tomato (Solanum lycopersicum) crop. However, broad-spectrum and phenotypically stable sources of resistance to this highly variable pathogen are not yet identified in Solanum (section Lycopersion) germplasm. We evaluated, in three bioassays, the reaction of Solanum (Lycopersicon) accessi...

Asian soybean rust (ASR), caused by the fungus Phakopsora pachyrhizi (Pp), is the most important disease of soybean crops in Brazil. For over a decade, disease management has strategically focused on extensive, prophylactic applications of systemic, single-site chemical fungicides with high risk for resistance (especially QoIs and DMIs). Due to wid...

In this work, the effect of commercial algal extracts was examined based on Ascophyllum nodosum, Sargassum spp., and Spirulina spp. on the incidence of dead plants (%), Area Under the Disease Progress Curve (AUDPC) concerning that variable, severity (%) of rot in roots and hypocotyls, and vascular necrosis in hypocotyls (%) associated with charcoal...

The aim of this study was to evaluate the pepper (Capsicum annuum) response to six strains of Phytophthora capsici. Three inoculation methodologies were evaluated, using (i) toothpicks, (ii) infested rice grains and (iii) culture medium discs containing the pathogen. The applicability of these methods was explained through the analysis of severity...

Cacao (Theobroma cacao L.) is a crop that holds significant economic and social importance in Ecuador. Cocoa clones such as CCN-51, known for their resistance to diseases and high yield, have been widely established in the country. However, in January 2021, several CCN-51 plants showed dieback and fruit rot. Thus, this study focused on morphologica...

Cacao (Theobroma cacao L.) is a tree native to the Amazon rainforest of South America and is vital for all Latin American farmers. Its beans have been used to produce chocolate, one of the most consumed products worldwide. However, for decades, cacao plantations have been affected by several diseases that cause around 60% of production damage. Thes...

Wetlands worldwide face increasing challenges due to human activities such as water extraction, deforestation, and overfishing. These ecosystems are crucial for biodiversity, water retention, and purification. In Ecuador, the “Abras de Mantequilla” wetland exemplifies these pressures. It serves as a vital site for studying the interactions between...

El cultivo de mora (Rubus glaucus), se ha destacado recientemente debido a su elevado consumo en Europa, Estados Unidos, América y Asia. Es por ello que se están realizando esfuerzos para mejorar su productividad. Ecuador es un país con potencial de producción de mora (Rubus glaucus), debido a que su ubicación astronómica provee características agr...

Cacao (Theobroma cacao L.) is crucial for farmers in Latin America's tropical and subtropical areas due to rising demand from developed nations. This heightened demand has resulted in the expansion of cacao cultivation into tropical forests, leading to the replacement of traditional agroforestry systems (AFS) with monocultures. AFS use shade trees...

The study aimed to evaluate the effects of the application of organic fertilizers such as caster seed cake (Ricinus communis L.), physic nut seed cake (Jatropha curcas L.), and vermicompost on seedlings and adult plants of INIAP H-603 maize under semi-controlled and field conditions at the Pacific coastal Ecua-dor. Unfertilized and urea-fertilized...

Background Rubus glaucus Benth, called Andean blackberry, is a species of significant economic and ecological importance. Despite its relevance, scientific research on this plant remains fragmented and scattered across disciplines. Objective This study aims to systematically assess the state of scientific knowledge on R. glaucus, identifying resea...

Maize is one of the most planted and consumed cereals worldwide. Environmental conditions are essential in the genotype × environment interaction and its productive potential. During the rainy season of 2016, 2017, and 2018, the agronomic, phytosanitary, productive, and adaptive potential were consecutively evaluated in 18 hybrids of yellow corn in...

Post-harvest diseases like fruit crown rot (CR) on bananas (Musa spp.) worldwide are mainly attributed to Colletotrichum gloeosporioides (Berk. & Curt.) von Arx and Lasiodiplodia theobromae (Pat.) Griff. & Maubl (Sangeetha et al., 2012; Riera et al., 2019). In April 2019, at a banana farm (cultivar Williams) located in El Oro province (location at...

Rhizobacteria's effects on commercial banana plants in different generations remain unclear. In the present field-level investigation, we evaluated the effect of three types (injection, edaphic, and foliar) of applications of a local rhizobacterial consortium on Black leaf spot (BLS), chlorophyll content, morphological components, and fruit product...

The banana (Musa AAA) is one of the main economically important crops worldwide. Currently, it faces a serious problem of plant death caused by the bacterium Ralstonia solanacearum (Smith) variety 2. The objective of this research was to evaluate the effect of biological control of Moko disease and its relationship with the vegetative growth of ban...

The aim of this study was to examine the impact of both organic and inorganic nitrogen fertilizers on the intensity and epidemiological components of Cercospora leaf spot across three different canopies of cotton plants, specifically the variety DP ACALA 90, under field conditions. Fertilizers used in the study included bovine manure, Jatropha curc...

The present patent application relates to a method for aerobiological monitoring of phytopathogen inoculum and detection of fungicide resistance comprising the following steps: collection of spore populations of fungal phytopathogens in aerosols using an automated high-speed cyclone device volume for daily sampling; extraction of fungal DNA from ai...

The experiment was developed under production conditions on a farm in the Santa Ana city, south-central region of the province of Manabí, Ecuador, in a mountainous area of approximately 300 meters above sea level. Coffee (Coffea arabica, sp.) production is carried out in a context of peasant family agriculture, with an agroforestry system with coff...

Tobacco (Nicotiana tabacum L.), an endemic species of South America that is grown worldwide, is a member of the Solanaceae family. Although it is not a common crop in Ecuador, tobacco is important to the nation's economy and a significant source of employment. Viral infections are particularly devastating to tobacco as they can reduce both its yiel...

Physic nut (Jatropha curcas L.) has emerged as a promising fruit crop in Ecuador, but the recent identification of rust poses a potential threat to its productive development. This study focused on elucidating the morphological aspects of the basidiomycete and assessing rust intensity across different canopy levels of physic nut hybrids and genotyp...

Fungicide resistance is an alarming challenge for the Brazilian tropical agricultural systems, with major implications for food safety, human and animal health, as well as for the environment. This review explores strategies to address fungicide resistance within the Brazilian agroecosystem context. We examined historical and current scenarios of f...

The response of two common bean (Phaseolus vulgaris) varieties with different sensitivities to salinity (Montalbán: sensitive; I-193: moderately sensitive) was studied to determine some phytometric and physiological characteristics that could be associated with their differential sensitivities. Plants were sown in a greenhouse during the seedling s...

The study was conducted at three sampling sites in the province of Manabí, Ecuador, designated for coffee production under an agroforestry system (AFS). A total of 21 plant species were recorded, and the carbon stored in live aboveground biomass was estimated. The results showed that coffee-based AFS has a high potential for carbon storage, and spe...

The Abras de Mantequilla Wetland System (ADMW) in Ecuador provides a variety of ecosystem services, including erosion control, flood regulation, nutrient retention, and habitat provision. This study used a multi-level combined model to assess the potential of ADMW to provide these services. The results showed that ADMW has the potential to store a...

El tabaco (Nicotiana tabacum L.) es un cultivo industrial de importancia económica y una planta modelo importante, cultivada ampliamente en muchos países. Su producción, rendimiento y calidad se han visto gravemente afectados por una serie de factores entre las que destacan las infecciones virales. Hasta el momento se han reportado más de 60 virus...

Pineapple fruit production (Ananas comosus L. Merr.) is negatively affected by inhomogeneous natural flowering, but flowering can be exogenously induced by growth regulators such as Ethephon (2-chloroethylphosphonic acid), resulting in greater production and yield in this crop. Thus, this study aimed to evaluate the application of Ethephon and ethy...

Coffee (Coffea spp.) is the second most significant commodity worldwide, with C. arabica being its most representative species. The coffee crop is affected by different fungal diseases that reduce the photosynthetically active area of its leaves and the production of grains. In order of agronomic importance, the rust caused by the biotrophic pathog...

Rhizobacteria has shown promising results in managing nematodes and improving the root system of banana plants. However, their effects on commercial banana plants in different generations remain unclear. In this study performed under field experiment, we evaluated the effect of three types (injection, edaphic and foliar) of a local rhizobacterial c...

The Musaceae family is susceptible to Fusarium wilt (Fw), which is considered the most important disease globally, caused by a group of Fusarium species that includes F. oxysporum f. sp. cubense tropical race 4 (FocTR4). Until recently, FocTR4 was not present in Latin America. However, wilting, chlorosis of leaves, and vascular discoloration (typic...

Oil palm (Elaeis guineensis L.) is a crucial crop in Ecuador, considerably affected by black palm weevil Rhynchophorus palmarum L. (Coleoptera: Curculionidae) for several years. Despite its importance, the behavior of the black weevil in Ecuador is not well comprehended presently. Therefore, this study aimed to predict infestation patterns of the b...

Wheat blast, caused by the ascomycetous fungus Pyricularia oryzae Triticum lineage (PoTl), is mainly controlled by fungicide use, but resistance to the main fungicide groups—sterol demethylase (DMI), quinone outside (QoI), and succinate dehydrogenase inhibitors (SDHI)—has been reported in Brazil. In order to rationalize fungicide inputs (e.g., choi...

Meloidogyne incognita root-knot nematode is one of the main causes of tomato root damage and consequently crop production losses. Thus, in in vitro conditions, the number of nematodes hatched eggs (%) at 4 and 6 days and nematode mortality (J2 stage) at 8, 18, and 24 h, were evaluated in Petri dishes containing the candidate rhizobacteria Enterobac...

Chemical control is the most widely used method for disease management in significant crops such as soybeans and wheat. However, for a few years biological control has gained prominence. Thus, we evaluated the antagonism of bacteria Pseudomonas fluorencens, Pantoea aglomerans, and Bacillus sp. on the phytopathogens Corynespora cassiicola and Drechs...

Phytophthora capsici is an oomycete that causes various symptoms, such as root, neck, stem, fruit rot, and leaf blight, in different plant species, including the genus Capsicum. One of the tools to counteract this biotic problem, which may be more profitable and respectful to the environment in the long term, is using biocontrollers such as Bacillu...

Interaction among nitrogen fertilization using bovine manure, poultry manure, Jatropha curcas seed cake and urea, and the diseases Ramularia leaf spot (RLS) and Boll rot (BR), caused by Ramulariopsis pseudoglycines and Diplodia gossypina, respectively, in cotton plants (Gossypium hirsutum L.), was studied under field conditions. Intensity (incidenc...

The genus Capsicum, native to tropical and subtropical America, belongs to the Solanaceae family, which includes commercially important vegetables such as chilies and green peppers. The silverleaf whitefly Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae), causes losses to vegetables including Capsicum species. Among the alternatives of pest cont...

Phytophthora capsici es un oomiceto causante de la pudrición de raíz, tallo, frutos y tizón foliar en varias especies vegetales de importancia agrícola, principalmente en Solanáceas del género Capsicum como ají y pimiento. Este fitopatógeno cosmopolita posee mecanismos de ataque que favorecen la rápida infección, colonización y reproducción en hués...

Capsicum from tropical and subtropical America, is an important genus for the nutritional, economic and cultural values of its species. At the same time, the Capsicum species are affected by diseases caused by viruses, bacteria, fungi and pseu-dofungi, in particular the oomycete Phytophthora capsici. This phytopathogen causes great damage and losse...

Este trabajo estudió el efecto de la fertilización nitrogenada usando estiércol bovino, gallinaza, torta de piñón (Jatropha curcas), y urea; usando cuatro dosis por cada uno, sobre las enfermedades Mancha foliar de Ramularia (MFR) y Pudrición de cápsula (PC), causadas por Ramulariopsis pseudoglycines y Diplodia gossypina, respectivamente, en planta...

Genetic resistance is the main strategy to control Fusarium wilt in common bean. Despite this, few studies have focused on defense mechanisms involved in bean resistance to Fusarium oxysporum f. sp. phaseoli (Fop). Thus, the present study aimed to investigate the changes in xylem morphology and involvement of phenylpropanoid compounds and their bio...

Vegetable crops are exposed to constant infection by numerous diseases, including those caused by the oomycete Phytophthora capsici. This microorganism is a polyphagous plant pathogen, capable of infecting dozens of plant species, including cultivated plants and weeds. The aim of this review is to address topics related to etiology and symptoms of...

Cocoa (Theobroma cacaoL.) is one of the main crops in Latin American and African countries, its almonds being marketed to produce chocolate. However, different biotic factors can negatively affect the crop production, especially on small farms where management by farmers is scarce or nonexistent. Lethal wilt (Ceratocystis cacaofunestaEngelbrecht &...

Web blight caused by Rhizoctonia solani Kuhn is one of the main common beans (Phaseolus vulgaris L.) diseases of the Ecuadorian central coast. Thus, the present study aimed to evaluate the progress of web blight incidence using nonlinear models in promising genotypes SER 03 and SER 08, using the commercial cultivar INIAP 473 as a control. This stud...

Oil palm (Elaeis guineensis Jacquin) tree yields may be negatively affected by biotic factors such as Black weevil (Rhynchophorus palmarum L.; Coleoptera: Curculionidae) and Spear rot (Fusarium spp.). This study aimed to identify, model the temporal progress, and correlate Black weevil (BW) and Spear rot (SR) in the highly susceptible varieties INI...

Mycobiome of the plant-associated microbial community is important in affecting plant biological processes and plant-pathogen interactions. Most studies have emphasized on the bacterial microbiome of plants, yet mycobiome is new in this area. The aim of this work is to perform metagenomic analysis of mycobiota associated with hypocotyls of Capsicum...

Throughout history, the cocoa crop (Theobroma cacao L.) has been affected by countless diseases, some of these caused by Lasiodiplodia theobromae (Pat.) Griffon & Maul. Although three Lasiodiplodia species have been reported affecting cocoa plants, L. theobromae is the most studied species both in cocoa and other crops. In recent years this phytopa...

Cocoa can be cultivated in association with fruit, timber, and non-timber trees. Thus, the growth of four timber species and their behavior in producing "CCN-51" cocoa per seedling were evaluated. The timber species Caoba de Montaña (Colubrina arborescens (Mill.) Sarg), Fernán Sánchez (Triplaris guayaquilensis Weed), Guayacán Blanco (Cybistax donne...

This study investigated biochemical and morphological changes associated to oxidative metabolism during late stages, i.e. 25 days after inoculation of Fusarium oxysporum. f. sp. phaseoli (Fop) in susceptible and resistant roots as well as Fop sensitivity to H2O2. Severe cell destruction only occurred in infected susceptible roots, while xylem vesse...

Background: In this work, the interaction among nitrogen fertilization using bovine manure, poultry manure, Jatropha curcas seed cake and urea, and the diseases Ramularia leaf spot (RLS) and Boll rot (BR), caused by Ramulariopsis pseudoglycines and Diplodia gossypina, respectively, on cotton plants (Gossypium hirsutum L.), was studied under field c...

Root and crown rot (RCR) caused by Phytophthora capsici is present in all crop production areas of pepper and chili worldwide. This pathogen was recently reported at the Pacific coast of Ecuador (prov-ince of Manabí), as an etiological agent of wilt and root and crown rot in commercial fields of bell pepper (Capsicum annuum). This study aimed to ev...

Seaweeds are aquatic photosynthetic organisms with high potential of use in agriculture as fertilizers, biostimulants, and pesticides. Despite this, seaweeds (especially macroalgae) and their polysaccharides still have been little explored. In plant diseases management, algal extracts can control several diseases in different plant species. Seaweed...

Angular leaf spot is one of the most common diseases in beans crops in southern Brazil. This research aims to evaluate the effect of the extract from macroalga Ulva fasciata on angular leaf spot severity, foliar pigment content, and yield of common bean genotypes IPR Uirapuru, CF 22, and Mouro graúdo for 2005 and 2006. Plants were sprayed at phenol...

Este trabalho teve por objetivo avaliar o progresso da murcha-de-Fusarium (MF) em genótipos de feijão resistente (UFSC-01) e suscetível (cv. Uirapuru) sob condições naturais de infecção por Fusarium oxysporum f. sp. phaseoli (Fop) e comparar seu efeito nos componentes de rendimento. A evolução dos sintomas da MF ocorreu tardiamente e de forma menos...

El objetivo fue evaluar las enfermedades foliares y radiculares, así como la producción de granos, y correlacionar sus variables en 18 líneas promisorias de fréjol con hábito de crecimiento determinado tipo Ia, tres de crecimiento indeterminado tipo IIb y la variedad INIAP-473 utilizada como testigo. Esto en un único experimento de campo durante la...

La presente investigación busca caracterizar las unidades productivas agropecuarias (UPA) que producen soya, generar nueva información para la diversificación de cultivos y proyectar cambios en la matriz productiva de Ecuador. La información se recolectó a través de encuestas estructuradas entre julio de 2017 y enero de 2018 en los cantones Vinces,...

Entre los principales problemas del cultivo de limón (Citrus lemon L.) en la provincia de Manabí, Ecuador, están la presencia de la pudrición de flores y frutos causada por Colletotrichum spp., así como la falta de agua. Así, el objetivo del trabajo fue evaluar el efecto de oxicloruro de cobre y riego en la agronomía y sanidad de plantas de limón “...

La producción de soya [Glycine max (L) Merril.] en el Ecuador se inició en el año 1973 con la siembra de 1227 ha. En la zona centro del sur de la región costa, cuatro de cada 10 agricultores se dedican al cultivo de soya (Moreno y Salvador, 2015). A pesar de que en el país existen variedades mejoradas de soya, el rendimiento nacional promedio en el...

La producción de soya [Glycine max (L) Merril.] en el Ecuador se inició en el año 1973 con la siembra de 1227 ha. En la zona centro del sur de la región costa, cuatro de cada 10 agricultores se dedican al cultivo de soya (Moreno y Salvador, 2015). A pesar de que en el país existen variedades mejoradas de soya, el rendimiento nacional promedio en el...

La soya [Glycine max (L) Merril.] en el Ecuador es uno de los principales cultivos de ciclo corto en la región de la costa, y constituye un importante rubro económico para el país. Se estudiaron siete genotipos de soya desarrollados en la Universidad de Guayaquil, Ecuador, y una variedad comercial para conocer su adaptabilidad y estabilidad fenotíp...

The aim of this study was to evaluate the chemical control of Asian soybean rust (Phakopsora pachyrhizi Syd. & P. Syd.) using different tips and spray nozzles under controlled conditions. Rooted trifolia placed inside an acrylic box containing macronutrients, micronutrients and vitamins were treated with epoxiconazol + pyraclostrobin, ciproconazol...

Common bean is very important in the daily diet of Ecuadorians. Web blight (Rhizoctonia solani (Kuhn) is the major constraint faced by common bean farmers in Ecuador and everywhere in the world, causing high losses of yield grain every year. A constant selection of genotypes with excellent productive and resilience to disease features in each regio...

Pineapple is one of the major tropical fruits in Ecuador. Because of the demand for products and foods free of pesticide, using Trichoderma constitutes an important alternative to this crop. For these reasons, the aim was to evaluate the effect of the commercial product TRICHO WP-D® based on T. harzianum applied in pre-planting on several agronomic...

The aim was to study the effect of early application of two fungicide mixtures on the control of Asian rust and powdery mildew, as well as on grain yield in five soybean cultivars at two sowing dates. The experiment was carried in the experimental area of FAMV/UPF. The cultivars A 4910 RG (super-early), BMX Apolo RR, A 6001 RR and Fundacep 55 RR (e...

Há poucos estudos comparativos sobre a colonização e conidiogênese de Fusarium oxysporum f. sp. phaseoli em plantas resistentes e suscetíveis de feijão comum. Assim, o objetivo do trabalho foi analisar a formação de conídios de F. oxysporum f. sp. phaseoli raça 6 (Fop6) no interior dos vasos do xilema de plantas de feijão resistentes (genótipo UFSC...

The aim of this study was to determine the effect of seeding density on sanitary and agronomic characteristics of promising peanut genotypes, in Quevedo, Ecuador. The following promising peanut lines were used: CB-02, CB-16 and CB-23, Runner type, with a standard distance of 0,50 m between rows and 3,6; 5 and 10 plants m-1 for each cultivar. The di...

En la costa ecuatoriana una de las enfermedades más destructivas del pachaco es la marchitez vascular o pudrición del fuste provocada por el complejo Ceratocystis, por lo que el objetivo de este trabajo fue determinar los factores que inciden en la eficiencia de la reacción de corteza de árboles de pachaco a esta enfermedad. La presente investigaci...

Cocoa (Theobroma cacaoL.) is one of the main crops of economic importance in Ecuador since small and medium farmers on the coast rely on this income. However, fungal diseases decreases yield. In this research 10 experimental cocoa clones of National type and two commercial control varieties (EET-103 and CCN-51) were evaluated from 2008 to 2011, at...

Fusarium oxysporum Schlecht. es un patógeno habitante del suelo que causa la Marchitez de fusarium o Fusariosis en un amplio rango de plantas. El complejo de F. oxysporum posee diferentes formas especiales (f. sp.), que colectivamente infectan hospederos como algodón, banano, clavel, fréjol, melón, tomate, entre otros. Estructuras del hongo como cl...

This work aimed at comparing qualitatively and quantitatively the spatial-temporal vascular colonization of resistance and susceptible common bean by F. oxysporum f. sp. phaseoli race 6 (Fop6). Bean plants of UFSC-01 and IPR Uirapuru genotypes classified as resistant and susceptible, respectively, were inoculated (V2 growth stage) by dipping roots...

The aim of this research was to evaluate the potential agronomic of the 18 lines F6 of bean during the years 2010 and 2011, in the Guayas river basin. Commercial variety lNlAP-473 and 18 lines promising F6 of the crossbreeding Cf6 (all of habit growth determinate type Ia) were used. Randomized complete block design we used with 19 treatments and 3...

As doenças constituem o principal problema da cultura do feijão nesta parte do Equador. Portanto, este estudo teve como objetivo quantificar a intensidade das doenças foliares e radiculares e a produção em sete genótipos de feijão comum. Utilizaram-se as linhagens Ser-03, Ser-08 e Ser-31, EVG-06-103, EVG-16, o genótipo crioulo Pata de paloma e a va...

El Ecuador se caracteriza por producir cacao fino de aroma, producto altamente apetecido por los mercados internacionales. Sin embargo, la baja producción de este tipo de cacao ha llevado a los agricultores a optar por otras variedades de mayor rentabilidad. Bajo esta perspectiva se evaluó el comportamiento agronómico de 150 clones experimentales d...

Durante las épocas secas de 2010 y 2011, en la finca experimental La María de la Universidad Técnica Estatal de Quevedo, Ecuador, localizada en el km. 7.5 vía Quevedo-El Empalme, a 79° 30’ 08’’ O y 01° 00’ 35’’ S, se evaluaron las características agronómicas y las condiciones sanitarias de líneas y variedades de maní (Arachis hypogaea L.). Se utili...

O objetivo desse trabalho foi quantificar a intensidade de doenças, o rendimento de grãos e seus componentes em genótipos promissores de feijão durante a safra agrícola de verão em Quevedo, Equador. Os materiais genéticos utilizados foram as linhas Cf4 0-0-2-1, Cf6 0-0-4-9 e Cf6-0-0-4-8 (hábito de crescimento determinado tipo Ia), SER-03 e SER-08 (...

This work aimed to evaluate the agronomic, production and grain quality of soybean varieties KAMERUN and P-34 introduced from Colombia, compared with three national varieties during the rainy and dry season, in Quevedo, Los Ríos, Ecuador. Agronomic variables were evaluated (days to flowering, plants overturned, height plant and first pod), product...

O objetivo do trabalho foi avaliar a ocorrência e intensidade de doenças foliares e a duração do ciclo de cultivo de seis cultivares de soja em Passo Fundo, RS, Brasil, durante duas épocas de semeadura na safra agrícola de 2007-08. Utilizaram-se os cultivares A 4910 RG, BMX Apolo RR, A 6001 RR, CD 214 RR, FUNDACEP 55 RR e CD 219 RR, escolhidas por...

Se cuantificó la severidad de marchitez de Fusarium y colonización de Fusarium oxysporum f. sp. phaseoli (FOP) en los genotipos de fréjol (Phaseolus vulgaris) del grupo negro Selección UFSC-01 (resistente) e IPR Uirapuru (susceptible). Se inocularon raíces de los dos cultivares, con una suspensión de 1 x 106 macroconidias mL-1 de FOP o agua (testig...

El objetivo fue evaluar las enfermedades, el rendimiento y sus componentes en líneas de fréjol bajo tres distanciamientos de siembra. El trabajo se realizó durante la época seca del año 2011, en la Universidad Técnica Estatal de Quevedo (UTEQ), Quevedo, Ecuador. Se determinó la incidencia y severidad de la roya (Uromyces appendiculatus) y mustia hi...

El objetivo del trabajo fue cuantificar la severidad de enfermedades, el rendimiento y sus componentes, y su relación en 16 genotipos de fréjol durante la época lluviosa del 2011, en Quevedo, Ecuador. El diseño experimental empleado fue en Bloques Completos al Azar (DBCA) con 16 tratamientos y cuatro repeticiones. Se estimó la severidad (%) de la m...

The objective of this study was to determine the stability of commercial and experimental maize hybrids in the Central Ecuadorian Coastal Region. During a period from december 2010 to april 2011 uniform trials of yield in four locations with contrasting environments were evaluated. The genetic material was constituted by five experimental hybrids a...

La especie Canna spp. denominada vulgarmente achira o chisguas, posee flores con pétalos rojos y amarillos. Es utilizada en el diseño de jardines, parques, o simplemente para adornar interiores (casas, oficinas, etc.), como también en arreglos florales. En plantas de achira establecidas en jardines de la UTEQ de Quevedo y Mocache, se encontraron le...

Triazol and their mixtures with strobylurins are the main fungicides used to control Asian rust on soybeans. Shifting in fungal sensibility to fungicides demands continuous monitoring on the efficacy of such compounds. In this research a comparative study on rust control was carried out with the fungicide tebuconazol (triazol) and the mixture of ep...

Atualmente não existem estudos sobre os danos ocasionados por Rhizoctonia solani Khun [teleomorfo Thanatephorus cucumeris (Frank) Donk] nos componentes de rendimento do feijoeiro (Phaseolus vulgaris L.), pelo que o objetivo deste trabalho foi quantificar a redução no rendimento de grãos e seus componentes de rendimento causados pela infecção natura...

The yield of beans (Phaseolus vulgaris L.) is diminished by the onslaught of disease throughout the crop cycle, reducing farmers' incomes in the central part of the Ecuadorian coast. The objective of this research was to identify which are the diseases that occur, and quantify them in 21 bean genetic materials in Quevedo city. Described the agents...