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EFFECT OF PHYSICAL PARAMETERS ON THE INCIDENCE OF ROOT AND COLLAR ROT DISEASE IN CHILLIES

A. SALEEM, M.ANSAR, K. HAMID, AND FARHAT F.JAMIL*

Abstract: The effect of physical parameters like temperature, flooding duration and soil type on the incidence of root and collar rot disease of chillies was examined. The disease incidence increased from 0-100% with rise in temperature from 15-30°C producing maximum canker length (4.5 cm) and girdling index (4 em). Gradual increase of flooding period from 0-48 hours enhanced the disease development from 25-100 % with maximum Canker length (3.66 cm) and girdling index at 48 h flooding period. Heavy soils showed 83.3% disease as compared to light medium soil which respectively showed 50 and 66.7% of disease incidence.

Plant Pathology Section, Ayub Agricultural Research Institute, Faisalabad, Pakistan.
* NIAB, Fasialabad.