Results and discussions
Laboratory tests
The effect of increased concentrations of furfural on the growth of the fungus R. solani is presented in Table (1) and Fig. (1). Obtained results showed that furfural was significantly able to reduce gradually the linear fungal growth increasing its concentrations.
Complete growth inhibition of R. solan, was observed at concentration of 5000 ppm.
Meanwhile, the highest reduction was obtained with furfural at 4000 ppm which reduced the linear growth by 77.8 %. Meanwhile, furfural at 2000 and 3000 ppm showed moderate effect (Fig. 1).