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500g/L, difeconazol 250g/L, cloruro con principio activo difeconazol 250g/L
de benzalconio amonio cuaternario fueron los más efectivos, teniendo
200g/L y metiram 700g/kg, diluidos una acción fungistática, donde a
a concentraciones 50% por encima bajas concentraciones (50% menos
y por debajo de las recomendadas de la concentración recomendada)
por el fabricante, en placas de PDA, inhibieron el crecimiento de estos
con pozos previamente perforados, hongos fitopatógenos, hasta un 62,5%,
agregando 80µL de cada tratamiento en promedio, en comparación con altas
y del testigo (agua destilada estéril); el concentraciones (50% más de las
microorganismo, se inoculó en el medio concentraciones), en donde inhibieron
céntricamente y se incubó durante 7-15 hasta un 65,0%, en promedio.
días, a 28°C (Bartlewicz et al. 2016).
Los géneros fúngicos identificados
correspondieron a Alternaria alternata,
con un porcentaje de identificación
del 99,5% y Epicoccum sp., con un
porcentaje de identificación del
99,0%. Las pruebas de susceptibilidad
permitieron identificar que los pesticidas

SUMMARY

ood practices used in agriculture, is the presence of phytopathogens that agricultural systems and ecosystems
livestock, forestry, and fisheries affect organs and even the entire fruit (from Puerto Rodríguez et al. 2014).
Gare more efficient when developed in all its phenological stages, causing The objective of this research was
comprehensively, helping to improve the reduction in crop yields, the to evaluate the susceptibility of
food security, increase incomes for rural deterioration of product quality and the phytopathogenic fungi to commercial
people and reduce poverty (FAO, 2016). availability of food and raw materials, for fungicides. Sampling was carried out
Fruit farming as an agricultural activity this reason, studies are required to allow in production-producing apple, peach,
of great importance to the economy their prevention and effective control plum, and pear crops, where samples of
both nationally and internationally (Miranda et al. 2013), implementing rhizospheric soil, roots, basal and middle
(Lasprilla, 2011), is characterized by the strategies such as the use of pesticides stems, apical branches, and leaves were
production of deciduous crops such as of biological and chemical origin, which collected. Serial dilutions up to 10-5 were
plum, peach, apple, and pear, whose do not cause risks, as most do, for made with rhizospheric soil. Vegetable
biggest limiting factor for its production farmers ensuring the sustainability of segments previously disinfected with

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