Interaction of Fusarium solani, Macrophomina phaseolina and Rhizoctonia solani as root rot pathogens of Cucumis melo

Abstract

Root diseases represent one of the main reasons for yield loss in melon crops, especially root and stem rots caused by pathogens like the fungi Fusarium solani (Fs), Macrophomina phaseolina (Mp) and Rhizoctonia solani (Rs), frequently observed in muskmelon either alone or in combination. The objective of this study was to evaluate the effect of the interaction between the pathogens Fs, Mp and Rs on the incidence and severity of root rot and muskmelon development. Two greenhouse experiments were performed using plastic pots with substrate infested with each pathogenic agent alone or in combination. The second experiment was conducted in the same pots that were used in the first experiment. In the first experiment, the disease incidence was higher for the treatment with Fs alone. In the second experiment, the disease incidence and severity were greater for treatment Fs + Rs than for Fs alone. Macrophomina phaseolina was the most commonly isolated pathogen when applied to the plants in a paired mixed inoculum (Fs + Mp and Mp + Rs) in the first experiment. In the second experiment, Fs was more prevalent than the other studied pathogens. Soil infested with Fs had the lowest fresh weight of muskmelon. The pathogens Fs and Mp were more competitive than Rs.

Growth Performance and Metabolic Changes in Susceptible Mung Bean [Vigna radiata (L.) Wilczek] during Interaction with Rhizoctonia solani and Trichoderma virens

“…The percentage of post-emergence damping-off was observed at 21 dap. Disease severity of R. solani infection was assessed using a scale in Porto et al (2020) study.…”

In-vivo Evaluation of Agro-Waste based Formulations of Yellow Pigment Producing Actinobacteria against Mulberry Root Rot Pathogens

“…After 30 days of transplanting, mixture of pathogens inocula in sorghum grains was prepared in equal ratio (1:1:1:1). For inoculation of pathogens mixture, soil near roots was carefully removed and pathogens mixture was applied at the rate of 3% (w/w) to all bio-hardened saplings (Pinto et al, 2018;Porto et al, 2020). The details of treatments were listed below (Table 1).…”

Root-Knot Nematode and Root-Rot Disease Complex Management in Tomato Plants with Virkon® S and Trichoderma viride

“…Plant diseases involving multiple pathogens in the infection process are usually called "complex" because their diagnosis and subsequent control are more complex (Lamichhane et al, 2017;Lamichhane and Venturi, 2015). Combined infection with soilborne microorganisms often exacerbates the onset of symptoms in plants and can affect growth, development, and crop production (Porto et al, 2020). These plant disease complexes are difficult to control and thus cause huge plant yield losses in many countries worldwide.…”