Browsing by Author "Pesantez Pacheco, Pedro Paul"

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    Aplicación de polisulfuro de calcio como método preventivo del moho gris (Botrytis cinerea) en el cultivo de tomate riñón variedad Michaela bajo invernadero
    (Universidad de Cuenca, 2021-10-22) Pesantez Pacheco, Pedro Paul; Larriva Coronel, Walter Iván
    According to FAO estimates, the tomato (Solanum lycopersicum) is the most widely consumed vegetable worldwide due to its high nutritional content. In Ecuador it is considered a product of the basic family basket and represents the source of economic income for small and medium farmers. The production of this crop is seriously affected by the different pathogenic fungi such as (Botrytis cinerea) that significantly damages the crop causing losses up to 100%. Control of the disease is mainly achieved using synthetic fungicides, but updated studies show this type of control is becoming less effective due to: repetitive use, incorrect dosages and resistance developed, that is why through alternative products is intended to reduce the use of synthetic inputs. The present research was conducted with the objective of evaluating the optimal dose of calcium polysulfide for the control of (Botrytis cinerea), the results vary between treatments in terms of incidence and severity of the disease, the lowest incidence (50 %) and severity (17.19 %) was obtained with calcium polysulfide at 5%. Application costs of the was $ 2.32 per cycle. The application of different doses of calcium polysulphide did not present a significant difference regarding the incidence compared to the control treatment (boscalid), but the severity of the disease in the control treatmen was lower (7,81 %).