Causal Agent:
Phytophthora sp.
| Characteristic Symptoms: | |
 |
Damping-off, root rot, stem rot and fruit rot. |
|
Wilting of the plant. |
|
The disease is serious during wet weather or in wet environments. |
| Conditions for Disease Development: | |
|
The disease is favored by warm, wet weather and is polycyclic within seasons. |
|
The pathogen may survive as overwintering spores in the soil for many months and serve as inoculum or in infected plant tissues. |
|
Fruits in contact with the soil are most prone to infection. |
|
Sporangia/spores are easily dispersed by wind and rain splashes to leaves and stems of healthy plants. |
|
Excess soil moisture due to excess rain or irrigation, and soil temperature of 18°C–30°C arising from high air temperature are needed for disease development. |
| Management and Control: | |
|
Use pathogen-free/certified seeds. |
|
Drench seedlings with chemical fungicides like copper-based fungicides (e.g. Cupravit®, Super BlueⓇ, Vitigran blueⓇ, FunguranⓇ, KocideⓇ, Hydroxide superⓇ), difenoconazole (e.g. ScoreⓇ, MontanaⓇ, PursueⓇ, BashⓇ), metalaxyl+mancozeb (e.g. Ridomil Gold MZ 68 WGⓇ, Apron XL 350 ESⓇ) or carbendazim ( (Bavistin 50 DFⓇ, Goldazim 500 SSⓇ, Minx 500 SCⓇ, SuperdazimⓇ, Avert 50 WPⓇ, BiostinⓇ). |
|
Avoid over watering or excessive moisture. |
To view other diseases, click here.
Need more help? Ask the Doctor.
