Antagonistic succession of trichoderma against rhizoctonial damping-off on tomato in composted media

Abstract EN

The results revealed that the incidence of Rhizoctonial damping-off of tomato was 65% and 67% in both rotations.

Substrates of pine leaf litter and mushcom 2 suppressed infection reaching 59 and 60%.

Mushcom1 restricted disease occurrence to 53%.

In contrast, formulated Th + B.

subtillus revealed a noticeable disease reduction reaching 33.16%, due to nutrients incited from mushroom thallus.

The highest occurrence of damping-off (92 and 94 %) was found in control (sandy loam soil) during rotations.

However, partial suppressive of Trichoderma spp.

against R.

solani was detected in different substrates.

Mortality was 90% in control (non-amended soil).

Finally, a comparable reduction of disease observed on tomato grown in mshcom 1 and mushcom 2 during rotations particularly when amended with T.h.

B.

subtillus.