Evaluating Plant Leaf Tinctures against Maize Weevils (Sitophilus zeamais Motsch.) in Stored Maize (Zea mays L.) under Laboratory Conditions

Table 3

Effect of different plant tinctures on grain weight loss caused by S. zeamais.

Plant species	Concentration (mL)	Mean dry weight ± Std (g) (after three months)	% weight loss (after three months)
Brucea antidysenterica	2.5	292.00 ± 2.00	2.66^b
	5	294.00 ± 2.00	2.00^b
	7.5	297.00 ± 1.73	1.00^b
Carica papaya	2.5	285.00 ± 2.64	3.00^c
	5	289.00 ± 3.00	3.66^c
	7.5	290.00 ± 2.64	3.33^c
Croton macrostachyus	2.5	283.00 ± 1.00	5.33^d
	5	286.00 ± 0.00	5.00^d
	7.5	287.00 ± 2.64	4.00^d
Nephrolepis exaltata	2.5	284.00 ± 1.73	5.66^d
	5	285.00 ± 1.73	4.66^d
	7.5	288.00 ± 2.00	4.33^d
Control	0	273.06 ± 0.00	8.98^a

n = 36; Std = standard deviation; initial weight = 300 g; mean weight loss % followed by the same letters is not significantly different ( < 0.05) from the Tukey HSD test.