Abstract:
Water hyacinth (Eichhornia crassipes) is one of the most
dangerous ĂqƵĂƟc weeds for Lake Tana. To minimize
invasion; biological, chemical and physical control methods
can be used. Biological control based on the use of natural
enemies of the weed to discourage its development was the
best ŽƉƟŽn͘ Plant pathogenic associated with naturally
infected Faba bean by fungus was conducted at ĚŝīĞrĞnƚ
sites with the ŽbũĞcƟvĞ of study the pathogen city
indigenous fungi on water hyacinth to manage its spread on
Lake Tana. Infected fungus plant samples were collected
from three weredas (Amba Gyorgese, Dabat and Debarke)
around Gondar at 20 Peasant ĂƐƐŽcŝĂƟŽn (PAs), The
cŽůůĞcƟŽn were done for infected Faba bean leaves and
roots and isolated using Potato Dextrose Agar medium.
Highest disease incidence per plant was recorded in water
hyacinth plants using Using MŽĚŝĮĞĚNaseema et al. (2001)
disease severity rĂƟnŐscale by inoculated with Rhizoctonia
solanispp. Aspergillus ŇĂǀƵƐ, Tricothcium roseum, Fusarium
spp and Aspergillus niger show high moderate disease
severity and ƟƐƐƵĞ death at green house and pond level.
Those fungus were released on September 2016 to
prepared open pond at 16m
2
and water hyacinth was
started severely ĂƩĂcŬĞĚ on November 2016, its disease
incidence was 55% at 23˚C and humidity 39%, in December
2016 its disease incidence was 58.4% at humidity 31% and
23˚C, in January 2017 disease incidence was 65% at 26˚C
and humidity 25% and in Feb 2017 not record disease
incidence because all leaves are ĂƩĂcŬĞĚ and dry and
Disease severity was 100%.However, in April 2017 due to
the climate cŽnĚŝƟŽnƐ becomes cold and rain the dried
water hyacinth started make new shoot and at this ƟmĞthe
disease severity was 90%. Some species of Fungi found in
Faba bean leaf and root can eradicate the healthy water
hyacinth at above 26˚C and at less than 25% Humidity
