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Control of survival of Ophiobolus graminis between consecutive crops of winter wheat
Author(s) -
SCOTT P. R.
Publication year - 1969
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1969.tb05464.x
Subject(s) - biology , agronomy , sowing , straw , crop , red clover , compost , crop rotation , winter wheat , competition (biology) , take all , field experiment , botany , ecology , fungus
SUMMARY Under a glasshouse crop of red clover, Ophiobolus graminis (Sacc.) Sacc. in artificially colonized straws survived for longer on the soil surface than when buried, and for much longer when suspended above the soil; survival in buried straws was somewhat more prolonged in fallow soil than under clover. In field experiments with consecutive crops of winter wheat, under‐sowing with red clover was not effective in reducing the incidence of take‐all, possibly because of above‐ground survival of the pathogen in unploughed straw. Early rotavation, however, significantly reduced disease incidence, probably because of enhanced microbial activity and competition for nitrogen in the well‐aerated compost of soil and stubble.