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The in vitro biocontrol ability of Trichoderma harzianum on the phytopathogen Alternaria alternata improved in the presence of the growth regulators gibberellic acid (GA3), or indolacetic acid (IAA) or benzylaminopurine (BAP) or foliar nutrient at concentrations similar or higher than those used ...


Roco, AngelaPérez, Luz María[In vitro biocontrol activity of Trichoderma harzianum on Alternaria alternata in the presence of growth regulators]In vitro biocontrol activity of Trichoderma harzianum on Alternaria alternata in the presence of growth regulators

Trichoderma harzianum 650 (Th650) and Paenebacillus lentimorbus 629 (Pl629) selected earlier for their ability to control Rhizoctonia solani, Fusarium solani and F. oxysporum in vitro, were applied alone or combined with solarization (summer assay) and/or with methyl bromide (MeBr) (summer and w...


Jaime R. Montealegre, Jaime R.Herrera, RodrigoVelásquez, Juan CarlosSilva, PolyanaBesoaín, XimenaPérez, Luz María[Biocontrol of root and crown rot in tomatoes under greenhouse conditions using Trichoderma harzianum and Paenibacillus lentimorbus. Additional effect of solarization]Biocontrol of root and crown rot in tomatoes under greenhouse conditions using Trichoderma harzianum and Paenibacillus lentimorbus. Additional effect of solarization

The obtainment of 30 new strains from native Trichoderma harzianum after UV light irradiation (UV-A and UV-C), and of 82 strains resulted from protoplast fusion were accomplished. The new strains, initially selected for their growing rate under low temperature and high pH conditions, as well as f...


Besoain, Ximena A.Pérez, Luz MaríaAraya, AntonioLefever, LlacolénSanguinetti, MelinaMontealegre, Jaime R.[New strains obtained after UV treatment and protoplast fusion of native Trichoderma harzianum: their biocontrol activity on Pyrenochaeta lycopersici]New strains obtained after UV treatment and protoplast fusion of native Trichoderma harzianum: their biocontrol activity on Pyrenochaeta lycopersici

Bacteria from the rhizoplane and surrounding soil of healthy and Rhizoctonia solani diseased tomato plants, cropped in greenhouse of the V Region of Chile, were collected. The best bacterial strains, based on their ability to control development of three R. solani isolates (identified as belongin...


Montealegre, JaimeReyes, RodrigoPérez, Luz MaríaHerrera, RodrigoSilva, PolyanaBesoaín, Ximena[Selection of bioantagonistic bacteria to be used in biological control of Rhizoctonia solani in tomato]Selection of bioantagonistic bacteria to be used in biological control of Rhizoctonia solani in tomato

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