PNABD246.pdf

*0579 Gutierrez, E.M. 1985. Survey and identification of seedborne fungi
and viruses of field legumes [Abst.]. PHILIPPINE PHYTOPATHOLOGY, v.21(1/2):4.
[En] (A:PS)
Seven fungal genera were isolated from the seeds of mungbean, cowpea,
peanut and soybean using the blotter test and 11 genera were isolated using the
agar plate test. Results showed that more storage fungi were isolated than
field fungi. Seed transmission test was done to identify viruses of peanut
(Arachis hypogeae L.). A virus causing leaf mottle was identified and studied.
It was found to be transmitted by sap and by aphid (Aphis craccivora Koch).
Vigna sesquipedalis L., V. unguiculata Walp, V. sinensis and P. lunatus were
local lesion hosts of the virus and Capsicum annuum was a systemic host. The
virus was no longer infectious after 3 days storage at dilutions between I.OE-3
and I.OE-4 and after O0 C heat exposure for 10 minutes. [AS]
NEMATODES
- General
*0580 Prasad, S.K. ; Mishra, S.D. ; Gaur, A.C. 1972. Effect of soil
amend-ents on nematodes associated with wheat followed by mung and maize.
INDIAN JOURNAL OF ENTOMOLOGY, v.34(4):307-311. [En] [En AbstJ (REP.MB-0807)
Microplot studies with wheat-straw, farm yard manure, neem seed cake and
NPK provided maximum reduction in the population of plant parasitic nematodes
(Helicotylenchus, Tylenchorhynchus and Pratylenchus) in the case of
wheat-stra+-neem seed cake+NPK and wheat-straw+neem seed cake+1/2 NPK. These,
however, recorded high numbers of free-living nematodes. The effectiveness of
soil amendments could be better evaluated 75 days after the treatments. [AS]
*0581 Singh, Inderjit ; Prasad, S.K. 1973. Effect of some nematicides on
nematodes and soil aicro-organisms. INDIAN JOURNAL OF NEMATOLOGY,
v.3(2):109-133. [En] [En Abst] (REP.MB-1503)
Field and pot tests were conducted to determine the effect of DD, EDB,
DBCP, aldicarb, dazomet, carbofuran, thionazin, phorate, fensulfothion,
disulfoton, dimethoate and thionazin+phorate, on nematodes and soil
microorganisms associated with mungbean and wheat. Dazomet was most effective
in reducing the nematode population and in preventing the build up of plant
parasitic nematodes. It was also most suppressive and inhibitory to soil
microorganisms. With DD there was a high initial reduction in the nematode
population but subsequent build up was rapid. EDB, dimethoate, aldicarb,
disulfoton, DBCP and phorate were moderately effective in reducing the
population of soil microorganisms and also in keeping down their population at
low levels. DBCP, carbofuran, phorate, fensulfothion and aldicarb were
moderately effective in reducing the nematode population, but subsequently they
prevented their buildup only for a short period. Azotobacter, Nitrosomonas and
Nitrobacter were most susceptible to nematicidal treatment and took time to
re-established. [AS/THH]
*0582 Castillo, M.B. ; Alejar, M.S. ; Litsinger, J.A. 1977. Pathologic
reactions and yield loss of mung bean to known populations of Rotylenchulus
reniformis and Neloidogyne acrita. PHILIPPINE AGRICULTURIST, v.61(1/2):12-24.
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