Table 4 Population increase (mean number of progeny for 4 jars ± SE) and damage parameters of Sitophilus zeamais on grains of three maize varieties admixed with NeemPro^® and stored for 4 months under laboratory conditions and percentage of seed germination

CLH103

 Malagrain

0 ± 0^b

0 ± 0^b

0 ± 0^b

84.13 ± 1.24^a

 0

669 ± 0^a

113 ± 0^a

99.99 ± 0.01^a

0 ± 0^b

 0.75

5 ± 5^b

1 ± 1^b

0.13 ± 0.13^b

85.56 ± 2.94^a

 1.5

0 ± 0^b

0 ± 0^b

0 ± 0^b

86.67 ± 1.93^a

 3

0 ± 0^b

0 ± 0^b

0 ± 0^b

76.67 ± 1.93^a

 6

0 ± 0^b

0 ± 0^b

0 ± 0^b

82.22 ± 2.94^a

 F value

86.63***

8607.81***

999.99***

218.06***

CMS8501

 Malagrain

0 ± 0^c

0 ± 0^c

0 ± 0^b

86.41 ± 1.02^ab

 0

748 ± 28^a

106 ± 0^a

99.94 ± 0.01^a

0 ± 0^c

 0.75

40 ± 20^b

5 ± 2^b

1.13 ± 0.44^b

85.55 ± 2.22^ab

 1.5

6 ± 6^bc

1 ± 1^bc

0.61 ± 0.61^b

82.22 ± 2.94^ab

 3

0 ± 0^c

0 ± 0^c

0 ± 0^b

78.89 ± 5.56^ab

 6

0 ± 0^c

0 ± 0^c

0 ± 0^b

72.22 ± 294^b

 F value

86.63***

970.42***

17674.85***

110.92***

SHABA

 Malagrain

0 ± 0^d

0 ± 0^b

0 ± 0^b

57.73 ± 2.05^c

 0

762 ± 66^a

98 ± 0^a

99.98 ± 0.01^a

0 ± 0^b

 0.75

476 ± 60^a

81 ± 12^a

58.31 ± 24.36^a

26.67 ± 13.47^ab

 1.5

135 ± 48^b

28 ± 5^b

5.85 ± 1.12^b

37.78 ± 2.94^a

 3

54 ± 21^bc

12 ± 2^b

1.54 ± 0^b

33.33 ± 1.93^a

 6

15 ± 11^c

7 ± 3^b

0.69 ± 0.29^b

30 ± 3.33^a

 F value

47.11***

44.29***

16.5***

6.27***