Table 1 Schedule of Trichogramma evanescens release (30,000 wasps/feddan) for control of the rice stem borer, Chilo agamemnon, in rice fields, 2015 season

Check

–

–

14.31^a

–

15 June

15

Tillering

14.28^a

0.21

30 June

30

Maximum tillering

10.99^b

23.20

15 July

45

Panicle initiation

8.64^bc

39.62

30 July

60

Heading

6.55^c

54.23

30 June + 15 July

30 + 45

Max. tillerin + panicle init.

2.18^d

84.77

15 July + 30 July

45 + 60

Panicle init. + heading

2.96^d

79.32

Carbofuran (6 kg/feddan)

15 + 45

Tillering + panicle init.

1.73^d

87.91