Table 5 Impact of release of biocontrol agents against C. punctiferalis on number and yield of marketable guava fruits during winter season, 2020–21
Treatments | No. of marketable fruits/tree* | Fruit yield (kg/tree)** | Yield/acre (MT) |
|---|---|---|---|
T. chilonis—1000 parasitized eggs/tree | 339.40 ± 8.08c | 32.58 ± 0.78c | 4.30 ± 0.10c |
T. chilonis—1500 parasitized eggs/tree | 369.80 ± 7.48b | 35.50 ± 0.72b | 4.69 ± 0.09b |
T. chilonis—2000 parasitized eggs/tree | 405.00 ± 9.35a | 38.88 ± 0.90a | 5.13 ± 0.12a |
C. blackburni—100 adults/tree | 285.20 ± 10.61d | 27.38 ± 1.02d | 3.89 ± 0.17d |
C. blackburni—150 adults/tree | 293.20 ± 13.78d | 28.15 ± 1.32d | 3.71 ± 0.17d |
C. blackburni—200 adults/tree | 307.40 ± 13.03d | 29.51 ± 1.25d | 3.61 ± 0.13d |
Untreated control | 249.00 ± 12.22e | 23.90 ± 1.17e | 3.15 ± 0.15e |
F value | 27.13 | ||
Df | 6,24 | ||
p value | < 0.0001 |