Abstract:
Mungbean (Vigna radiata L.) is an excellent and easily digestible dietary source of plant
protein. Mungbean yellow mosaic disease caused by Mungbean yellow mosaic virus
(MYMV) which is transmitted by whitefly (Bemisia tabaci), an important constraint of
mungbean cultivation. A field experiment was conducted at the central farm of Sher-eBangla
Agricultural
University
(SAU),
Dhaka
during
March
to
June,
2021.
The
prime
aim
of
the
study
was
to
manage
the
Mungbean
yellow
mosaic
virus
(MYMV)
by
controlling
the
insect
vectors using barrier crops (sesame, linseed, maize, coriander) and colored plastic
mulches (red, blue, silvery-grey, black). BINA released variety BINAmoog-5 was used as a
planting material in the experiment. Morphological and physiological parameters were all
considerably impacted in this study. Disease incidence and percent disease index of MYMV
was significantly varied among the treatments. The lowest disease incidence (5.35%, 8.95%,
17.91% per plot and 5.24%, 11.75%, 19.09% per plant at 30, 45 and 60 DAS, respectively)
was estimated when maize was used as a barrier crop while the highest disease incidence
(25.92%, 35.52%, 61.10% per plot and 27.66%, 34.15%, 59.72% per plant at 30, 45 and 60
DAS, respectively) was found in control treatment. In case of colored plastic mulches, the
lowest disease incidence (8.56%, 14.35%, 23.91% per plot and 8.23%, 15.76% 24.70% per
plant at 30, 45 and 60 DAS, respectively) was recorded when silvery-grey colored plastic
mulch was used. The lowest percent disease index (5.55%, 13.39% and 20.16% at 30, 45
and 60 DAS, respectively) was also found when maize was used as a barrier crop. In case of
colored plastic mulches the lowest percent disease index (7.42%, 17.97% and 26.70% at 30,
45 and 60 DAS, respectively) was computed when silvery-grey colored plastic mulch was
used. Again, the highest percent disease index (28.14%, 37.71% and 64.08% at 30, 45 and
60 DAS, respectively) was found in control treatment. The highest chlorophyll content,
number of flower, pod and yield was measured and counted when maize was used as a barrier
crop and silvery- grey colored mulch was used as a colored plastic mulch. However, maize
or silvery-grey colored plastic mulch uniquely or combindly can be used to control whitefly
(vector) for the management of MYMV.
Description:
A Thesis
Submitted to the Department of Plant Pathology,
Sher-e-Bangla Agricultural University, Dhaka
in partial fulfillment of the requirements
or the degree of
CAUSED BY Alternaria spp.
MASTER OF SCIENCE (MS)
IN
PLANT PATHOLOGY
