Abstract:
Cotton is a soft, fluffy staple
fiber that grows in a boll, around the seeds
of the cotton plants of the genus Gossypium
in the family Malvaceae. Bacterial blight of
cotton, also know as angular leaf spot, boll
rot, and black leg, is a potentially
destructive bacterial disease of cotton
production. The disease caused by
Xanthomonas campestris pv. malvacearum
(Smith) Dye (synonyms Xanthomonas
malvacearum (E.F. Sm) Dowson) is one of
the most important and serious disease in
cotton crop. Main objective of present
research is to study the progress of the
bacterial blight disease of cotton (BLB),
caused by Xanthomonas campestris pv.
malvacearum (Smith) Dye, with relation to
the environmental parameters. This is a
common disease affecting the growth,
development and yield of cotton. A field
trial was conducted to determine the
influence of environmental factors, viz.
rainfall periods, temperature, sun shine
hours and humidity on the development of
disease. Bacterial blight disease was
recorded with its appearance and
subsequently at weekly interval till it
prevailed on G. Cot. Hy.12 (Non Bt). The
incidence of bacterial blight disease (BLB)
was noticed during 28 to 49th standard week
with the maximum disease intensity in third
week of September (23.5% PDI). None of
the abiotic factors had significant influence
on bacterial blight disease progress and
development.
