Abstract:
The present investigation was initiated to evaluate relative effectiveness of several
mulches such as Rice straw, Blue, Transparent and Red Polyethylene sheets for
the management of TYLCV in the field. In this experiment two popular tomato
varieties of BARI Tomato-14 and BARI Tomato-16 were used. The experiment
was set up at the field of Sher-e-Bangla Agricultural University, during October
2016 to March 2017. TYLCV was prevalent between two tomato varieties in
different treatments and the average TYLCV infection varied from 8.33 % to 66.67
% and 52.32 % to 74.09 % in disease incidence and severity, respectively.
Maximum prevalence (Disease incidence 66.67 % and disease severity 74.09 %)
was found in T
(Control plot) and minimum prevalence (Disease incidence
8.33% and disease severity 52.32%) was observed on T
1
(Blue Polyethylene) in
the same variety. Significant reduction was observed in case of different growth
and yield contributing characters between two tomato varieties due to application
of different mulches. The correlation and regression analysis revealed that %
reduction of growth and yield contributing characters due to TYLCV infection had
3
pronounced effect on yield reduction of tomato and it was observed in all cases
depending on varieties, treatments, whitefly population and weather. The results
of the study suggested that, none of the treatments had significant effect against
TYLCV infection. Although treatment T
3
(Blue Polyethylene) performed better as
compared to other treatments on all over consideration. None of the varieties had
impressive level of tolerance against TYLCV infection but BARI Tomato -14
performed better than BARI Tomato -16.
Description:
A Thesis
Submitted to the Department of Plant Pathology
Sher-e-Bangla Agricultural University, Dhaka,
In partial fulfillment of the requirements for the degree of
MASTER OF SCIENCE (M. S.)
IN
PLANT PATHOLOGY
SEMESTER: JANUARY- JUNE, 2017
