Efficacy of Neem Oil on Cardamom Thrips, Sciothrips cardamomi Ramk., and Organoleptic Studies

Table 1

Effect of TNAU neem oil on thrips damage in cardamom-Bodimettu, Bodi (mean of three observations).

Treatments

PTC

First round of application

Second round of application

Third round of application

3 DAT

7 DAT

14 DAT

Mean

% Redn

3 DAT

7 DAT

14 DAT

Mean

% Redn

3 DAT

7 DAT

14 DAT

Mean

% Redn

TNAU neem oil (A) 2%

12.0

11.5^a

10.7^a

10.6^b

11.0

31.0

9.9^b

8.8^b

7.1^b

8.6

54.7

6.9^ab

6.1^abc

5.3^bc

6.1

75.2

TNAU neem oil (A) 3%

12.6

12.5^bc

10.4^a

9.4^a

10.9

31.5

9.0^a

8.9^bc

7.2^b

8.4

56.0

6.8^ab

6.0^abc

4.9^abc

5.9

76.0

TNAU neem oil (C) 2%

13.4

12.7^bc

10.7^a

9.6^a

11.0

30.5

9.0^a

8.1^a

6.9^b

8.0

57.9

6.4^ab

5.4^ab

4.3^ab

5.4

78.3

TNAU neem oil (C) 3%

12.0

11.5^a

10.8^a

9.6^a

10.7

32.9

9.0^a

7.8^a

6.4^a

7.7

59.5

6.0^a

4.9^a

3.8^a

4.9

80.1

Neem oil 2%

13.3

13.1^c

12.6^c

11.7^c

12.5

21.5

11.0^c

9.9^d

8.6^d

9.8

48.5

8.1^b

8.0^d

6.8^d

7.6

69.0

Neem oil 3%

12.4

12.0^ab

11.2^ab

10.7^b

12.0

24.5

10.1^b

9.4^c

8.0^c

9.2

51.9

7.7^b

6.9^bcd

5.7^cd

6.8

72.5

Vijay Neem 2 mL L^−1

14.0

13.3^c

11.8^bc

10.6^b

11.9

25.0

10.0^b

9.3^bc

8.1^c

9.2

51.9

7.9^b

7.0^cd

6.1^cd

7.0

71.5

Untreated check

14.4

15.0^d

15.8^d

16.8^d

15.9

—

17.3^d

18.2^e

21.6^e

19.1

—

22.0^c

24.7^e

27.2^e

24.6

—

Mean of three observations; PTC: pretreatment count.
In a column, means followed by a common letter(s) are not significantly different by DMRT (𝑃=0.05).