PNABD246.pdf

early growth stages in mungbean and cowpea and in later growth in upland rice.
Chemical analysis of soil indicated nutrient status was not the direct cause of
soil sickness. Root residue was a source of infection to the next crop in the
monoculture. Sterilizing the sick soil and/or root residue removed the
sickness, indicating that it is caused by microorganisms. Nematodes were found
in significant numbers in mungbean and cowpea, and an inoculation study
siggested that nematodes increase the effect of soil sickness on leguminous
iiiants. Inoculation and fungicidal treatments suggest that fungi were not the
primary cause of soil sickness. Chloropicrin fumigation alleviated soil
sickness most effectively for both upland rice and mungbean. Soil sickness in
annual upland crops also can be avoided by proper crop rotation. [AS/THH]
*0049 Wang, T.C. 1984. [Mungbean diseases in Taiwan, I and II]. PESTICIDE
WORLD, no.13:13-15; no.14:23-24. [Ch] (A:PS)
Mungbean (Vigna radiata) is grown under a wide variety of soil and climate
conditions, and more than thirty diseases have been reported on this crop. The
severity and prevalence of mungbean diseases are closely associated with
environmental conditions such as temperature, humidity, and host reactions.
Therefore, some mungbean diseases are geographically limited, whereas others
are distributed widely. Only seventeen mungbean diseases which were incited by
pathogenic fungi, bacteria, nematodes, viruses and mycoplasma have been found
in Taiwan. Usually, not all diseases of mungbean occur every year and in every
locality; however, it is not unusual to find fields with several diseases
present. The diseases which are frequently found in the field are described.
[AS]
DISEASE RESISTANCE AND RESISTANT VARIETIES
- Germplasw Evaluation for Disease Resistance
*0050 Chohan, J.S. ; Kalia, N.R. 1967. Virus diseases of Phaseolus mungo
L., and their control through resistant varieties in Punjab. IN: Proceedings
[of the] first annual workshop conference on pulse crops. New Delhi : Indian
Council of Agricultural Research. 3 leaves (REP.MB-1715)
MEETING: Annual Workshop Conference on Pulse Crops, 1st -- New Delhi, India,
Feb, 1967
Three strains of blackgram, namely, M 1, M 1-1 and M 2 were tested for
resistance against yellow mosaic of mungbean and the curly top virus diseases.
The results showed that the strains M 1 and M 1-i were highly resistant to
yellow mosaic but highly susceptible to curly top and strain M 2 was highly
resistant to curly top but fairly susceptible to yellow mosaic. [THH]
*0051 Amin, K.S. ; Grewal, J.S. ; Verma, A. ; Williams, F.J. 1968.
Screening of mung and urid genetic stock for disease resistance. IN:
Proceedings [of the] second annual workshop conference on pulse crops. New
Delhi : Indian Council of Agricultural Research. 2p. [En] (REP.MB-1417)
MEETING: Annual Workshop Conference on Pulse Crops -- New Delhi, India, Apr
1-3, 1968
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