PNABD246.pdf

phenylJ-3-thioallopianate were compared for their
pathogenic
toxicity towards
isolates
two
of Rhizoctonia solani and three of R. bataticola. The
isolates of two fungi showed significant differences in
inhibition
mycelial
by
growth
the five fungicides. Benomyl and carbendazim were
inhibitory
the most
to all isolates of both fungi while
bataticola
the sesame
was tile
isolate
least
of
sensitive
R.
to all fungicides. Disease
obtained
control
with
(90%)
low
wa!
concentrations of benomyl against root
by R.
rot
solani,
of cowpea
and
caused
with thiophanate methyl against root rot of sesame
sunflower,
and
and leaf blight of mungbean caused by R. bataticola.
stalk-end The
rot
spread
of sunflower
of
heads was best checked with
methyl.
a spray
The results
of thiophanate
suggest that benzimidazole fungicides
toxophores
having similar
act differently for disease control in different host-parasite
combinations. [AS]
*0467 Saikia, U.N. ; Phookan, A.K. 1963. Efficacy of different fungicides
against Corticium sasakii, the causal organism of blight of mung. INDIAN
PHYTOPATHOLOGY, v.36:752-754. jEnj (A:PS)
Blight, caused by Corticium sasakii (=Thanatephorus cucumeris), is one of
the serious diseases of both summer and rabi mungbean in Assam. Eleven
fungicides were tested under field condition. Mungbeans were artificially
inoculated when they were 35 days old. Fungicides were sprayed 48 h after
inoculation. Second spray was given at 10 days interval. Bavistin and Benlate
were the most effective fungicides. [THHJ
*0468 Hooda, I. ; Grover, R.K. 1984. Fungicidal control of Macrophomina
phaseolina altered in pathogenicity by substrate nutrients. ANNALS OF APPLIED
BIOLOGY, v.104(i):69-78. [Enj [En AbstJ (REP.MB-2517)
The presence of different carbon and nitrogen sources and bivalent metal
compounds in the substrate medium influenced the mycelial growth of
Macrophomina phaseolina and in vitro susceptibility to fungicides. The inoculum
from such substrate media showed differences in pathogenicity on mungbean
(Vigna radiata). Sucrose and asparagine significantly increased the mycelial
growth as well as pathogenicity of tile fungus. Absence of bivalent metal ions,
viz., Fe+, Zn-+ and Mg-+ in the medium produced inoculum which caused maximum
seedling mortality and foliage blight. Carbendazim and thiophanate-M as seed
treatments were significantly less effective when the inoculum was from a
medium containing glucose than when the inoculum was from a medium containing
sucrose. Captafol and thiram gave significantly better disease control on
mungbean when the inoculum used for soil inoculations was from media containing
asparagine and ammonium nitrate compared to the inoculum grown on a medium
containing sodium nitrate. Carbendazim, thiophanate-M, PMA, captafol and thiram
gave good disease control when the inoculum used was raised on a medium devoid
of bivalent metal ions. Carbendazim and thiophanate-M were the best fungicides
as foliar treatments and controlled the disease irrespective of carbon,
nitrogen and bivalent metal ion status of the substrate medium used for the
production of inoculum. [AS]
*0469 Alam, S.S. ; Qureshi, S.H. ; Bashir, M. 1985. A report on web blight
of mungbean in Pakistan. PAKISTAN JOURNAL OF BOTANY, v.17(I):165. [Enj
(A:PS)
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