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Table 2 Impact of release of biocontrol agents against C. punctiferalis on number and yield of marketable guava fruits during rainy season, 2020

From: Evaluation of augmentative biological control options against fruit and shoot borer, Conogethes punctiferalis (Guenée) (Lepidoptera: Crambidae) in guava in India

Treatments

No. of marketable fruits/tree*

Fruit yield (kg/tree)**

Yield/acre (MT)

T. chilonis—1000 parasitized eggs/tree

319.20 ± 9.16b

30.64 ± 0.88b

4.04 ± 0.12b

T. chilonis—1500 parasitized eggs/tree

340.40 ± 8.98b

32.68 ± 0.86b

4.31 ± 0.11b

T. chilonis—2000 parasitized eggs/tree

366.60 ± 9.62a

35.19 ± 0.92a

4.64 ± 0.12a

C. blackburni—100 adults/tree

258.80 ± 10.63d

24.84 ± 1.02d

3.28 ± 0.13d

C. blackburni—150 adults/tree

269.40 ± 7.93 cd

25.86 ± 0.76 cd

3.41 ± 0.10 cd

C. blackburni—200 adults/tree

287.60 ± 7.04c

27.61 ± 0.68c

3.64 ± 0.09c

Untreated control

232.00 ± 7.46e

22.27 ± 0.72e

2.94 ± 0.09e

F value

  

29.23

Df

  

6.24

p value

  

 < 0.0001

  1. *Mean (± SE) of 5 replications; **no. of trees/acre = 132; average weight of fruit = 96 g; Means followed by different letters within column differ significantly (p < 0.05)