Table 6 Cost of release of biocontrol agents for the management of C. punctiferalis in guava during winter season, 2020–21
Treatments | Cost of protection (US $/ acre)* | Increase in yield over control (MT) | Gross income over control# (US $/acre) | Net income over control (US $/acre) |
|---|---|---|---|---|
T. chilonis—1000 parasitized eggs/tree | 33.36 | 1.15 | 311.89 | 278.53 |
T. chilonis—1500 parasitized eggs/tree | 41.32 | 1.53 | 414.95 | 373.63 |
T. chilonis—2000 parasitized eggs/tree | 49.28 | 1.98 | 537.00 | 487.72 |
C. blackburni—100 adults/tree | 972.12 | 0.74 | 200.70 | − 771.42 |
C. blackburni—150 adults/tree | 1449.45 | 0.56 | 151.88 | − 1297.57 |
C. blackburni—200 adults/tree | 1926.78 | 0.46 | 124.76 | − 1802.02 |
Untreated control | – | – | – | – |