Pest identification
What's eating my black gram?
Gram pod borer (Helicoverpa armigera)
Signs: Caterpillars bore into pods, eating seeds; entry holes visible; severe losses during pod-fill stage; frass around bore holes
Control: Apply Bt or spinosad at early flowering; use pheromone traps for monitoring; hand-remove egg clusters; avoid excessive nitrogen
Spotted pod borer (Maruca vitrata)
Signs: Larvae web flowers and bore into young pods; flower abortion and pod shedding are the main symptoms
Control: Apply Bt at first flower; use light traps to monitor adult moths; remove webbed flower clusters promptly
Leafhopper (Empoasca kerri)
Signs: Sap-sucking causes leaf curl, yellowing (hopper burn), and reduced pod set; also vectors yellow mosaic virus
Control: Apply neem oil or insecticidal soap at early infestation; use reflective mulch to deter adults; grow tolerant varieties
Black bean aphid (Aphis craccivora)
Signs: Dense colonies on growing tips and flower buds; stunting, honeydew, sooty mould, and virus transmission
Control: Blast off with water; apply insecticidal soap; encourage natural enemies including parasitic wasps and ladybirds
Keep black gram pest-free
Healthy plants resist pests best. Get the basics right:
Black Gram pests — FAQ
What is eating my black gram?
Black gram (Vigna mungo) is plagued by pests from sowing to storage. The gram pod borer (Helicoverpa armigera) and spotted pod borer (Maruca vitrata) are the worst field pests, damaging pods directly. Leafhoppers transmit yellow mosaic disease; hairy caterpillars and aphids cause additional foliage and sap losses across all growth stages.
How do I get rid of gram pod borer (helicoverpa armigera) on black gram?
Caterpillars bore into pods, eating seeds; entry holes visible; severe losses during pod-fill stage; frass around bore holes Apply Bt or spinosad at early flowering; use pheromone traps for monitoring; hand-remove egg clusters; avoid excessive nitrogen
How do I get rid of spotted pod borer (maruca vitrata) on black gram?
Larvae web flowers and bore into young pods; flower abortion and pod shedding are the main symptoms Apply Bt at first flower; use light traps to monitor adult moths; remove webbed flower clusters promptly
How do I get rid of leafhopper (empoasca kerri) on black gram?
Sap-sucking causes leaf curl, yellowing (hopper burn), and reduced pod set; also vectors yellow mosaic virus Apply neem oil or insecticidal soap at early infestation; use reflective mulch to deter adults; grow tolerant varieties
How do I get rid of black bean aphid (aphis craccivora) on black gram?
Dense colonies on growing tips and flower buds; stunting, honeydew, sooty mould, and virus transmission Blast off with water; apply insecticidal soap; encourage natural enemies including parasitic wasps and ladybirds