02342naa a2200337 a 450000100080000000500110000800800410001902400540006010000200011424500980013426000090023252013460024165000230158765000300161065000230164065000140166365000240167765000270170165000130172865000210174165000240176265000180178665000160180465300200182070000210184070000170186170000290187870000160190770000220192377300590194521237542020-07-08       2020    bl uuuu     u00u1 u    #d7 ahttps://doi.org/10.1016/j.cropro.2020.1051382DOI1 aFUJINAWA, M. F.  aBiological control of gray mold and Myrothecium leaf spot in begonias.h[electronic resource]  c2020  aAbstract: The objective of this study is to evaluate the antagonism of Clonostachys rosea LQC62 and Trichoderma asperellum LQC96 for Botrytis cinerea and Myrothecium roridum, which are begonia leaf pathogens, and to evaluate the application of these antagonists in the management of the disease in commercial cultivation. Under controlled in vitro conditions, the production of soluble and volatile compounds was evaluated along with parasitism in paired cultures, competition by colonization in begonia leaf discs, and the effect of the application of the antagonists in the control of gray mold and Myrothecium leaf spot in the commercial cultivation of begonia. Both LQC62 and LQC96 produced soluble compounds in a culture medium that were capable of inhibiting the development of B. cinerea, which was not observed for M. roridum. Both antagonists produced volatile compounds that led to a reduction in the development of the pathogens. There was an overlap of the colonies of the antagonists with those of the pathogens, indicating hyper-parasitic activity. The antagonists colonized the begonia leaf discs, and the application of these antagonists prior to inoculation promoted a reduction in the sporulation of the pathogens of up to 100%. Weekly foliar sprays of LQC62 reduced the incidence of gray mold and of Myrothecium leaf spot.  aBiological control  aBiological control agents  aClonostachys rosea  aGray mold  aMyrothecium roridum  aTrichoderma asperellum  aBegônia  aBotrytis Cinerea  aControle biológico  aMofo Cinzento  aTrichoderma  aBegonia elatior1 aPONTES, N. de C.1 aBOREL, F. C.1 aHALFELD-VIEIRA, B. de A.1 aGOES, A. de1 aMORANDI, M. A. B.  tCrop Protectiongv. 133, p. 1-8, article 105138, 2020.