Abstract:
A field survey was conducted during 10
th
April to 20
th
July 2016 to study the
disease incidence and severity of lotkon (Baccaurea ramiflora) in Narsingdi
district of Bangladesh. In the survey, two diseases namely Anthracnose and Scab
were identified and pathogen were isolated as Colletotrichum gloeosporioides and
Venturia inaequalis respectively and their incidence and severity were recorded.
The highest percentage of disease incidence was recorded in Belabo Upazila
(16.83% for anthracnose and 14.33% for scab) followed by Raipura Upazila
(15.17% for anthracnose and 13.31% for scab) the lowest incidence was observed
in Shibpur Upazila (11.33% for anthracnose and 10.33% for scab). In the survey
of leaf blight was observed but pathogen could not be isolated and confirmed. The
maximum percentage of disease incidence was found in Raipura Upazila (20.5%)
followed by Belabo Upazila (19.33%) and the lowest was observed in the Shibpur
Upazila (17.67%). The maximum disease severity was observed in the Raipura
Upazila (17.26% for anthracnose,19.69% for scab and 21.70% for blight) followed
by Shibpur Upazila (13.50% for anthracnose,18.41% for scab and 17.71% for
blight) and the lowest was observed in the Belabo Upazila (12.96% for
anthracnose,15.86% for scab and 16.39% for blight) of all the diseases. Significant
disease infestation was significantly recorded in all the three Upazilas in Narsingdi
district of Bangladesh.
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
SEMESTER: JANUARY - JUNE, 2016