Abstract:
Experiment was conducted to know the effect of plant extract on seed health status
of three selected maize variesties BHM-3, BHM-7, BHM-9 during the period
January 2015 to February 2016 in the Department of Plant Pathology, Sher-eBangla
Agricultural
University,
Dhaka,
Bangladesh.
Four
plant
extracts
viz.
neem
leaf,
garlic bulb, mustard seed, alamonda leaf were used. In the experiment seed
germination was the highest (97.22%) in seed treated with neem leaf extract. Three
fungi Aspergillus flavus, Aspergillus niger and Fusarium moniliforme were
identified. The lowest incidence (15.22%) of Aspergillus flavus and Fusarium
moniliforme (4.77%) were observed in seed treated with neem leaf extract. The
lowest incidence (13.78%) of Aspergillus niger was observed in seed treated with
alamonda leaf extract. Seedling symptom test yielded the highest seed germination,
normal seedling and the lowest disease incidence in maize variety BHM-9. Seedling
vigor index was found promising in neem leaf extract. Maximum germination
(95.56%), maximum number of healthy seedling (84.67%), minimum number of
dead seedling (3.88%), minimum number of diseased seedlings (7.11%), abnormal
seedling (3.22%) and the highest vigor index (2198) were observed in seed treated
with neem leaf extract. Farmers are therefore, advised to use neem leaf extract for
treating maize seed before sowing.
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
IN
PLANT PATHOLOGY
