ESTUDIO DE ALGUNOS PARÁMETROS BIOECOLÓGICOS DE CUATRO AISLAMIENTOS DE DRESCHSLERA, PATÓGENO A Sorghum halepense (L) Pers
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Instituto Nacional de Ciencias Agrícolas
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Weeds are considered the main biotic restriction for agricultural production, as they constituted the most striking pest now-a-days; so far, there are 205 economically important species. Several researchers have reported biological control (mycoherbicides) as the most economic and safe method, whenever it is included in an integrated pest management program. Since biological control is significantly applied as a weeding method at present, particularly Sorghum halepense (L) Pers , which is the most economically important weed in the world, thus a series of trials were conducted to test the performance of micelial growth and sporulation of four Dreschslera isolations that are pathogenic to Sorghum halepense (L) Pers , subjected to different pH values as well as to appraise their germination in various solvents, besides performing the pathogenicity test to different agricultural species. This research work was carried out at the Phytopathology Laboratory from the Agrarian University of Havana, for evaluating pH 5, 6, 7, and 8 as well as running, distilled and sterile distilled waters as solvents. Pathogenicity test was performed to the following crops: Panicun maximum , Lycopersicon esculentum , Zea mays , Oryza sativa and Sorghum halepense (L.) Pers . Results proved that all isolations studied favorably developed at every pH evaluated, obtaining significant differences regarding sporulation and germination in those solvents, besides a notable pathogenicity for S. halepense but not for the rest, which are important aspects that should be taken into account to obtain a mycoherbicide.
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Agrociencias