PJB-1993-36
Effect of water stress on charcoal rot disease of mashbean (Vigna mungo (L.) Hepper) caused by Macrophomina phaseolina
S. Hussain, S.M. Iqbal and B.A. Malik
Abstract
Mashbean (Vigna mungo L) Hepper) an important pulse crop of Pakistan is planted over 85,000 hectares giving an yield of 30- 40 thousand metric tonnes (Anon., 1990). Of the fungal, bacterial and viral diseases which produce an annual loss of 12-14% the charcoal rot caused by Macrophomina phaseolina (Tassi) Goid., produces 100% damage to the crop in severe cases (Bashir & Malik, 1988). The fungus infects the seedling, root, stem or pods producing small black sclerotia which are liberated in soil upon tissue decomposition or during tillage operation (Cook et al., 1973).
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