Ciencias Agropecuarias

Permanent URI for this communityhttp://repositorio.uta.edu.ec/handle/123456789/870

Browse

Subject: search.filters.subject.FUNGICIDAS

Search Results

Now showing 1 - 5 of 5
  • No Thumbnail Available
    Item
    Evaluación de dos fungicidas para el manejo de oídio (Oidium sp.) en el cultivo de mora (Rubus glaucus)
    (2024-02) Lluglla Manotoa, Doris Elizabeth; Velástegui Espín, Giovanny Patricio
    The blackberry (Rubus glaucus) is traditionally cultivated by small and medium-sized producers in the Sierra, it contributes in a very important way to the generation of economic resources and improving their quality of life. It has also been affected by the attack of pests and diseases due to edaphoclimatic conditions, the diseases that most attack the blackberry crop are Oidium sp, Anthracnose and Peronospora sparsa. The present investigation was carried out in the Tisaleo canton, Chilco la Esperanza hamlet, Nueva Esperanza neighborhood entitled "Evaluation of two fungicides for the management of Powdery Mildew (Oidium sp.) in the cultivation of blackberry (Rubus glaucus)", where the components study were different chemicals; Score with a dose of (0.375; 0.5; 0.625) and Predostar with a dose of (1.125; 1.5; 1.875). The experimental design used was a completely randomized block design (DBCA), with two products, three doses and a control (2*3+1). The variables evaluated were: incidence, severity, fruit weight and yield. Analysis of variance (ADEVA) and Tukey's significance test at 5% were performed for the respective variables. At the conclusion of the analysis of the titration work, it was observed that the best treatment for the management of Powdery Mildew (Oidium sp.) was the PID3 treatment with the Score product with a dose of 0.625 ml/L, in comparison to the other treatments, being the most efficient to reduce the percentage of incidence and severity, where it helped to obtain a heavier fruit, therefore, increasing crop yield. Keywords: Blackberry, Powdery mildew, Sheet music, Predostar, Dose
  • No Thumbnail Available
    Item
    Evaluación de fungicidas para el manejo de tizón temprano (Cercospora carotae Pass.) en el cultivo de zanahoria (Daucus carota L.)
    (2024-02) Tutillo Oñate, Fabricio Alexander; Pomboza Tamaquiza, Pedro Pablo
    The present research work was conducted in the community of El Santuario, located in the Quero canton, Province of Tungurahua, the main objective of this research was to evaluate the efficiency of two fungicides for the management of early blight (C. carotae Pass.) in the carrot crop (D. carota L.). The response variables were percent fungus incidence, percent fungus severity, plant height, root diameter, root length, root weight and yield. Two commercial products, Amistar top and Daconil 720 SC, were used, with an absolute control (no application). The methodology was experimental, a completely randomized block design (D.C.A) was used, with a total of seven treatments and three replications, the hypothesis test was carried out using the Tukey 5% test and for the yield variable the Duncan 5% test was used. Data were taken from 10 plants at random for each treatment. The results obtained confirmed that there were statistical differences in each of the treatments, highlighting the product Daconil 720 SC at a dose of 3.5 ml/l with a lower percentage of infection of Cercospora carotae Pass with an average of 41.33%, severity of the fungus with an average of 3.20%;The plant height was greater with an average of 13.93 cm, carrots of greater weight with a plot average of 244.72 g, average diameter of 4.13 cm, root length with an average of 12.88 cm and with an average yield of 6.12 Tn/ha when this agrochemical was applied. Key word: Cercospora, Chlorothalonil, D. carota and Incidence rate
  • No Thumbnail Available
    Item
    Evaluación de dos fungicidas para el manejo de oídio (Oidium sp.) en el cultivo de mora (Rubus glaucus)
    (2024-02) Lluglla Manotoa, Doris Elizabeth; Velástegui Espín, Giovanny Patricio
    The blackberry (Rubus glaucus) is traditionally cultivated by small and medium-sized producers in the Sierra, it contributes in a very important way to the generation of economic resources and improving their quality of life. It has also been affected by the attack of pests and diseases due to edaphoclimatic conditions, the diseases that most attack the blackberry crop are Oidium sp, Anthracnose and Peronospora sparsa. The present investigation was carried out in the Tisaleo canton, Chilco la Esperanza hamlet, Nueva Esperanza neighborhood entitled "Evaluation of two fungicides for the management of Powdery Mildew (Oidium sp.) in the cultivation of blackberry (Rubus glaucus)", where the components study were different chemicals; Score with a dose of (0.375; 0.5; 0.625) and Predostar with a dose of (1.125; 1.5; 1.875). The experimental design used was a completely randomized block design (DBCA), with two products, three doses and a control (2*3+1). The variables evaluated were: incidence, severity, fruit weight and yield. Analysis of variance (ADEVA) and Tukey's significance test at 5% were performed for the respective variables. At the conclusion of the analysis of the titration work, it was observed that the best treatment for the management of Powdery Mildew (Oidium sp.) was the PID3 treatment with the Score product with a dose of 0.625 ml/L, in comparison to the other treatments, being the most efficient to reduce the percentage of incidence and severity, where it helped to obtain a heavier fruit, therefore, increasing crop yield. Keywords: Blackberry, Powdery mildew, Sheet music, Predostar, Dose
  • No Thumbnail Available
    Item
    Evaluación de fungicidas para el control del moho blanco (Sclerotinia sclerotiorum) en el cultivo de lechuga (Lactuca sativa L.)
    (2023-03) Quispe Manobanda, Alexander Fabian; Pérez Salinas, Marco Oswaldo
    One of the main problems faced by farmers are diseases caused by phytopathogens, currently the lettuce crop (Lactuca sativa L.) has been affected by a fungus called white mold (Sclerotinia sclerotiorum) that can cause losses of up to 50%, this fungus is characterized by lesions that cause wilting of the plant followed by its death. The research project was carried out on the property of Mrs. Patricia Guamán located in the Izamba Parish, Quillan Loma sector, Canton Ambato, Province of Tungurahua at an altitude of 2668 meters above sea level, and at an altitude of 1° 12'48" South and 78° 33'33" West longitude, with the objective of controlling white mold (Sclerotinia sclerotium L.) in the lettuce crop (Lactuca sativa L.) through the application of two alternative products under different doses. The experimental design used was a Randomized Complete Block Design (RCBD) with group analysis, with three replicates. Kruskal Wallis and Tukey significance tests were performed at 5%, respectively. The variables evaluated were incidence, severity, days to harvest, weight, diameter and yield. The products evaluated were Regnum (P1) and TricoMic (P2), the treatment that showed less incidence was P2D2 (TricoMic dose 5cc/L) with an average of 1.67%, while the product that showed less severity was P1D3 (Regnum dose 1.5 cc/L) with an average of 16.67% severity. As for the economic analysis, it was observed that the treatment that showed the greatest net benefit was P2D2 (TricoMic 5cc/l) with a value of 5.41 USD, so that this product at this dose is the most economically profitable alternative for the farmer.
  • No Thumbnail Available
    Item
    Control químico de Botrytis Cinerea en el cultivo de mora de castilla (Rubus glaucus)
    (2013-07-18) Freire Camino, Iván Danilo; Valle, Luciano
    El ensayo se efectuó en la propiedad del señor Fernando Freire, ubicado en la provincia de Tungurahua, Cantón Ambato, Parroquia Santa Rosa, la misma que se encuentra a una altura de 2 900 msnm. sus coordenadas geográficas son: 1º 17´ de latitud Sur, y 78º 36´ de longitud Oeste. Se realizó con el propósito de determinar el fungicida adecuado la dosis y frecuencias de aplicación para controlar la presencia de Botrytis en el cultivo de mora de castilla. Se utilizó el diseño de bloques completos al azar con arreglo factorial 3x2x2+1; en análisis grupal con tres repeticiones. Se realizó el análisis de varianza (ADEVA), de las fuentes de variación que resultaron significativas se aplicó la prueba de Tukey al 5 %. Los datos tomados fueron: número de yemas florales infectadas por planta, número de infrutescencias cuajadas por racimo, porcentaje de severidad de la enfermedad, porcentaje de incidencia de la enfermedad por órgano, rendimiento. El número de yemas florales infectadas por planta y el porcentaje de incidencia de la enfermedad fueron significativamente menores en las plantas que recibieron tratamiento con Rovral debido a que este fungicida actuó específicamente sobre el hongo bajo las condiciones del ensayo. El número de infrutescencias por racimo aumentó con la aplicación de fungicidas en el cultivo de mora debido a que al mantener controlada la enfermedad, ésta no afecta los racimos.La aplicación de Rovral y Tiophiicc mantuvo controlada la enfermedad lo que se puede apreciar cuando se observan los datos del porcentaje de severidad. Los costos de producción fueron mayores para los tratamientos, en tanto que para el testigo fue menor, no se pudo apreciar la diferencia en la producción debido a que se produjeron heladas en la zona, que afectaron la cosecha.