Survival of Fusarium moniliforme in soil enriched with different nutrients and their combinations
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Authors
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S. SUNDER1 and SATYAVIR2
1CCS HAU Rice Research Station, Kaul, Haryana 136021
2Depu. Plant Pathology, CCS HAU, Hisar, Haryana 125 004
Keywords:
Fungal recovery, Fusarium moni/iforme, nutrients, propagules-infested, stubble-pieces, survivalAbstract
Survival of Fusarium moniliforme [Gibberella fujikuroi], the incitant of bakanae disease of rice was studied in soil enriched with different nutrients and their combinations from November 1993 to July 1994. Fungal recovery from stubble declined withthe incubation period irrespective of amendments, but none of the nutrients at test concentrations (N 37.5-150, P2O5 15-60, K2O 15-60 mg/kg soil) affected the survival of the pathogen significantly after 8 months of storage of stubble in soil. However, in propagule-infested soil, the higher dose of N (150 mg/kg) reduced its population (c.f.u./g soil) significantly compared with unamended controls at the completion of study. Among the various nutrient-combinations, the soil enrichment with NPK. ZnSO4.FeSO4 significantly reduced the survival of the pathogen in stubble, but none of the combinations affected the fungal recovery from propagule-infested soil significantly after 8 months of incubation.
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