, Research Notes

Integration of host resistance with fungicide in the control of dieback disease of periwinkle

Research Notes
R.N. Kulkarni
Central Institute of Medicinal and Aromatic Plants, Regional Centre, Bangalore - 560 065, India
N.S. Ravindra
Central Institute of Medicinal and Aromatic Plants, Regional Centre, Bangalore - 560 065, India
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Keywords

Catharanthus roseus
Dieback
Chemical control
Integrated control
Resistance
Medicinal plant

How to Cite

Integration of host resistance with fungicide in the control of dieback disease of periwinkle. (1997). Tropical Agriculture, 74(4). https://journals.sta.uwi.edu/ojs/index.php/ta/article/view/2530
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Abstract

Resistance of PTB, a variety of periwinkle [Catharanthus roseus (L.) G. Don], to dieback disease (caused by Pythium aphanidermatum) gave protection equivalent to 5. 76 kg ha-1 of the fungicide captafol on a susceptible variety WH 12. When protected with captafol, PTB suffered less (75%) plant mortality and gave higher leaf (146%) and root (200%) yields than unprotected WH 12.
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