PNABD246.pdf

*0176 Murugesan, S. ; Cnelliah, S. 1977. Transmission of greengram yellow
mosaic virus by the white fly, Bemisia tabaci (Geni.). MADRAS AGRICULTURAL
JOURNAL, v.64(7):437-441. [En] [En Abstj (REP.MB-1857)
Transmission studies revealed that a single viruliferous Bemisia tabaci
(Genn.) was able to transmit the virus successfully and maximum percentage of
infection was obtained when LO white flies were used per test plant. Maximum
percentage of infection resulted when the vector was given a pre-acquisition
starvation of 3 hr. and acquisition feeding period of 24 hr. The incubation
period was 8 hr. High percentage of infection resulted when the transmission
feeding period of the vector was 24 hr. The virus was retained by the vector
for a maximum period of 4 days. There was no transovum transmission and the
first instar nymphs of the vector were not capable of acquiring and
transmitting the virus. [AS]
*0177 Soria, J.A. ; Solomon, W.S. 1978. The effect of mungbean yellow
mosaic virus on mungbean. U.S.M. RESEARCH JOURNAL, v.1(1):95-107. [En] [En
AbstJ (REP.MB-2013)
Mungbean plants inoculated with MYMV at different growth stages by
mechanical transmission exhibited marked reduction in height, length of pods,
Aumber of pods per plant, number of seeds per pod and bean yield. Flowering and
maturity were delayed on plants inoculated with MYMV in the dicotyledonary and
first trifoliate leaves. Yield loss was caused primarily by the production of
fewer pods and seeds. Most researchers consider that MYMV is only transmitted
by whitefly (Bemisia tabaci). [AS/ATTI
*0178 Agrawal, H.S. ; Gupta, N.K. ; Prasad, V.K. ; Vishwakarma, S.L. 1979.
Chemical control of yellow mosaic of moong. PESTICIDES, v.13(5):44-47. [En]
[En Abst] (REP.MB-2890)
Field trials on the chemical control of yellow mosaic of mungbean were
conducted in randomized block design at the Regional Experimental Station,
Hardoi during zaid and kharif seasons 1976 and 1977. The average disease
incidence was higher in the control both during zaid (16.5%) and kharif season
(23.2%). DDVP, monocrotophos and phosphamidon resulted in lowering down
significantly disease incidence and giving significantly higher yield in all
the years except zaid 1976. There was a negative correlation between disease
incidence and yield i.e., the lower the incidence, the higher the yield and
vice-versa. It is, thus, concluded that effective control of yellow mosaic of
mungbean is possible by two sprayings ,t an interval of a fortnight of DDVP 500
ml or monocrotophos 875 ml or phosphamidon 250 ml/ha. [AS]
*0179 Chenulu, V.V. ; Venkateswarlu, V. ; R3ngaraju, R. 1979. Studies on
yellow mosaic disease of mung bean. INDIAN PHYTOPATHOLOGY, v.32(2):230-235.
[En] [En Abst] (A:PS)
Investigations on the relationship of mungbean yellow mosaic virus and its
vector Bemisia tabaci showed that primary as well as first trifoliate leaves
were suitable for transmission of the virus. The percentage of transmission was
influenced by acquisition feeding time, transmission feeding time, number of
insects per plant and the resistant or susceptible nature of the test plant. A
latent period of 5-6 hours in the whiteflies was found necessary for
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