Abstract:
Effect of Trichoderma harzianum and some selected soil amendments against
damping off disease of some winter vegetable were studied in the field condition
during the period of 2008-2009 at Sher-e- BangIa Agricultural University, Dhaka.
Soil application with poultry waste, cocodust, vermicompost, ash, sawdust,
khudepana, cowdung, solarized sand, Trichoderma harzianum and or seed treatment
with Trichoderma harzianum were evaluated against damping-off, seed germination
and growth characters of potato, tomato, eggplant, chilli, cabbage and cauliflower
seedlings. All the treatments were significantly reduced percent damping-off of these
six vegetable over untreated control. The most effective treatment was Trichoderma
harzianum followed by poultry waste and vermicompost in terms of suppressing
damping-off disease incidence with increasing plant growth characters. The highest
seed germination percentage of potato (94.00%), tomato (92.00 %), chilli (86.67%),
eggplant (94.33%), cabbage (88.00%) and cauliflower (90.00%) was recorded in Til
(Seed treatment with T. harzianum + Soil application with T. harzianum). The most
effective control measure for damping-off diseases of selected winter vegetable was
recorded in Til. The highest growth character was observed in Ttl «Seed treatment
with T. harzianum + Soil application with T. harzianumy T12 (Seed treatment with T.~',·
harzianum + Soil application with poultry waste) & T14 (Seed treatment with T.
harzianum + Soil application with vermicompost) respectively. It was also found
that, Trichoderma harzianum treated seed sown in different amended soil showed
better result in all parameters than seed sown only on amended soil. Among the
different soil amendments, poultry waste and vermicompost have promising effect on
seed germination, percent damping-off and seedling growth characters of six selected
winter vegetable seedlings.
Description:
A Thesis
Submitted to the Faculty of Agriculture,
Sher-e-Bangla Agricultural University, Dhaka
in Partial fulfillment of the requirements
for the degree of
MASTER OF SCIENCE (MS)
IN
PLANT PATHOLOGY