Trichoderma harzianum:A Biocontrol Agent Effective AgainstSclerotium rolfsiiandRhizoctonia solani

Abstract

An isolate of Trichoderma harzianum capable of lysing mycelia of The wheat bran preparation of T. harzianum increased growth of bean Sclerotium rolfsii and Rhizoctonia solani was isolated from a soil naturally plants in a noninfested soil and it controlled S. rolfsii more efficiently than a infested with those pathogens. In culture, T. harzianum grew better than S. conidial suspension of the same antagonist. An uninoculated wheat bran rolfsii and invaded its mycelium under growth conditions adverse to the preparation increased disease incidence. In naturally infested soils, wheat pathogen; eg, high pentachloronitrobenzene concentrations, high pH bran preparations of T harzianum inoculum significantly decreased levels, or low temperatures. Under greenhouse conditions, incorporation of diseases caused by S. rolfsii or R. solani in three field experiments with the wheat-bran inoculum preparation of T harzianum in pathogen-infested beans, cotton, or tomatoes, and they significantly increased the yield of soil significantly reduced bean diseases caused by S. rolfsii, R. solani, or beans. both, but its biocontrol capacity was inversely correlated with temperature.

Encapsulamento de Trichoderma inhamatum para o controle biológico de Rhizoctonia solani na propagação clonal de Eucalyptus

“…Espécies de Trichoderma aplicadas de forma isolada, associadas com Gliocladium virens Miller, Giddens & Foster ou com espécies bacterianas têm sido extensivamente estudadas no controle de R. solani (Hadar et al, 1979;Elad et al, 1980;Harman et al, 1980;Chet & Baker, 1981;Nelson et al, 1983;Beagle-Ristaino & Papavizas, 1985;Kwok et al, 1987;Lewis & Papavizas, 1987;Knudsen & Bin, 1990;Lewis et al, 1998). A ação antagonista de Trichoderma spp.…”

“…Na maior concentração testada, a supressão da atividade saprofítica de R. solani foi bastante elevada. Elad et al, (1980) Não se observou diferença significativa quanto à redução da sobrevivência e crescimento saprofítico de R. solani no solo quando se utilizou pequenas (3,0 -7,5 g/l) ou grandes (30 g/l) quantidades de biomassa dos antagonistas (Trichoderma spp. e Gliocladium spp.).…”

Native Trichoderma grown on oat grains controls damping-off and enhances height in soybean

“…However, the efficiency of Trichoderma-based products depends on the properties of the medium in which the fungi develop (Marín-Guirao et al 2016). The advantage of incorporating wheat bran inoculated with Trichoderma to the soil to control R. solani and Sclerotium rolfsii and to increase the bean yield was also observed by Elad et al (1980). The abundance of efficient Trichoderma strains in diversified environments may explain the abundance of commercial products found by Woo et al (2014).…”

Fungi in Aquaponics.

“…Trichoderma produce chelating metabolites and use redox activity for solubilizing the minerals like MnO 2 , metallic zinc that act as biocontrol agent and increase in the microelement content of Cu, P, Fe, Zn, Mn and Na of plants was also observed. Trichoderma harzianum was capable of lysing mycelia of Sclerotium rolfsii and Rhizoctonia solani (Elad et al, 1980). Research on fungal diseases has been conducted on several species like Penecillium sp., Alternaria sp., Fusarium sp., and Aspergillus sp.…”