ANTAGONISTIC SUCCESSION OF TRICHODERMA AGAINST RHIZOCTONIAL DAMPING- OFF ON TOMATO IN COMPOSTED MEDIA

Authors

  • Wazeer Ali Hassan University of Duhok - Faculty of Agriculture - Department of Plant Protection/ Kurdistan region of Iraq.
  • Ibrahim Esa Taher University of Duhok - Faculty of Agriculture - Department of Plant Protection/ Kurdistan region of Iraq.
  • Khadeeja Ahmed Saido University of Duhok - Faculty of Agriculture - Department of Plant Protection/ Kurdistan region of Iraq.

Keywords:

Rhizoctonia solani, Tomato, Compost, Tichoderma spp

Abstract

    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 mushcom 1 and mushcom 2 during rotations particularly when amended with T.h.  B. subtillus.

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Published

2015-12-01

Issue

Vol. 13 No. 4 (2015)

Section

Original Articles