Black Pepper (Piper nigrum)
Root Mealybug(Planococcus sp.)
Symptoms
- Large number of mealy bugs colonise the roots of the vine
- As a result of sap sucking, the plant turns yellow, leaves and branches dry and drop
- Many of the vines infested by root mealybugs are also likely to be infected with Phytophthora and nematodes
Management
- Removal of weeds and alternate host plants like hibiscus, bhindi, custard apple, guava etc in and nearby vineyards throughout the year.
- Deep ploughing in summer or raking of soil in vineyards helps to destroy its nymphal stages and minimizing the incidence.
- Release exotic predator, Cryptolaemus montrouzieri @ 10 beetles/vine.
- Spray Lecanicillium lecanii - 20 g/litre of water
- Detrash the crop on 150 and 210 day after planting
Chemical Control
| Sl.No | Generic Name | Trade Name | Color code | Dosage/litre | Recommendation | Remarks | |
|---|---|---|---|---|---|---|---|
| Dosage/acre (200 L) | Dosage/hectare (500 L) | ||||||
| 1 | Chlorpyriphos 20 EC | Chlorban, Classic-20, Coroban, Dhanvan, Durmet, Dursban, Hilban, Krishan, Radar Starban, Tafaban, Tagban, Tricel | yellow | 1.5 ml/litre of water | 300 ml | 750 ml | |
Extremely Toxic
Highly Toxic
Moderately Toxic
