Abstract:
The existing health situation of seedlings of litchi and management strategies
of nursery diseases of seedlings of litchi species in the country is in a stage to
be upgraded for successful fruit production to meet the national demand. Four
experiments were carried out during 2010 to 2012 to study the status of leaf
blight on seedlings of litchi, effect of weather parameters on the incidence of
seedling diseases of litchi in different growing areas of Bangladesh with
development of an environment friendly disease management practice.
Important plant pathogen Pseudomonas sp was detected and identified by
morphological study and by different biochemical test. Incidence and severity
of leaf blight of litchi at seedling stage were studied and significant variations
were observed that depends on weather factors. Occurrence of leaf blight was
correlated with temperature, rain fall and relative humidity. Comparative
effectiveness of BAU-biofungicide applied in the soil at the time of pot
preparation as well as foliar spray and three fungicide viz. Indofil M-45,
Bavistin 50 WP and Cupravit 50 WP were evaluated on litchi against leaf
blight in the nursery. Among the treatments applied, Cupravit 50 WP showed
better result in controlling leaf blight of litchi. BAU-Biofungicide, is also used
as an alternate to chemicals can successfully be used.
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
