Evaluación de fungicidas para el control del moho blanco (Sclerotinia sclerotiorum) en el cultivo de lechuga (Lactuca sativa L.)

Abstract

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.