Control químico del manchado de grano en el cultivo de arroz en la zona de CEDEGE, Babahoyo

VIII. SUMMARY This work was carried out in the experimental station "Palmar", belonging to the Faculty of Agricultural Sciences of the Technical University of Babahoyo, located at km 12 via Babahoyo - Montalvo, with geographic coordinates 01 0 49 '15 "from Latitude south and 790 32 'longitude west. The place has a humid tropical climate, the soil is flat topography and loamy - loamy texture. The objectives were: to determine the most effective fungicide for the control of grain staining; Identify the most adequate dose for the control and economically analyze the results. Seeds of the variety INIAP 14, obtained from the National Autonomous Institute of Agricultural Research (INIAP), were used as seed material. Seven treatments, conformed by the fungicide products in different doses, such as Native (Trifloxistrobin + Tebuconazole) in doses of 600 and 700 cc / ha; Starner 20 WP (Oxolinic Acid) in doses of 500 and 600 g / ha; Phyton (copper sulphate pentahydrate) with 800 and 1200 cc / ha plus an absolute control (No application of the product). The experimental design was of Completely Random Blocks, with seven treatments and three replicates. Comparisons of treatment averages were performed using the Tukey test at 95% probability. Plant preparation, planting, weed control, phytosanitary control according to treatments 60 and 75 days after transplant, irrigation, fertilization and harvesting will be carried out. In order to estimate the effects of the treatments, disease incidence data were taken by evaluations at 50, 65 and 80 days after transplantation, disease severity at 50 days after transplantation, fungicide efficacy at 90 days after Of transplant, plant height, number of tillers and ears per square meter, panicle length, grain per spike, weight of 1000 grains, yield and economic analysis. For the analysis and interpretation of the experimental results it was determined that the presence of grain stained disease in the rice crop, in all the experimental plots sown in the CEDEGE area, with a higher incidence in the treatment that was applied Phyton Of copper pentahydrate) at doses of 1200 cc / ha at 50 and 65 days, while increasing in the control treatment (without application of the product) at 80 days after transplantation; The evaluation performed at 50 days reported a higher percentage of severity in the control treatment (without application of the product); At 90 days after transplant, it was recorded that the treatment that was used Nativo (Trifloxistrobin + Tebuconazole) in doses of 700 cc / ha showed greater effectiveness of the fungicides; The treatment with the product Starner 20 WP (Oxolinic Acid) at doses of 600 g / ha presented the highest plant height, while the treatment with the product Nativo (Trifloxistrobin + Tebuconazole) in doses of 700 cc / ha showed a greater number of Tillers / m2 and panicle length; The treatment with the native product (Trifloxistrobin + Tebuconazole) in doses of 600 cc / ha presented the highest average number of ears / m2; The highest average grain / ear was found in the treatment that Starner 20 WP (Oxolinic Acid) was used in doses of 500 g / ha and the highest average weight of 1000 grains was recorded in the treatment that was used Native (Trifloxistrobin + Tebuconazole) in doses of 700 cc / ha and the highest yield and economic analysis was observed in the treatment that was used Native (Trifloxistrobin + Tebuconazole) in doses of 700 cc / ha with 4780.8 kg / ha and $ 612.78

• Главный автор: Gómez Gaibor, Víctor Raúl (author)
• Формат: bachelorThesis
• Язык: spa
• Опубликовано: 2017
• Предметы: Control químico; Manchado de grano; cultivo de arroz
• Online-ссылка: http://dspace.utb.edu.ec/handle/49000/3367