Investigations on the Effects of Five Different Plant Extracts on the Two-Spotted Mite Tetranychus urticae Koch (Arachnida: Tetranychidae)

Table 1

Effect (mean ± SE) and mortality (%) of extracts obtained from different five plants on T. urticae.

Treatment	Leaf-dipping method					Leaf-spraying method
	Larvae			Adult		Adult
	Concentration (%)	Mortality (%)	Effect (%)	Mortality (%)	Effect (%)	Mortality (%)	Effect (%)
H. arenarium	1	46	31.59 ± 4.00^c	37	25.32 ± 4.10^c	52	39.76 ± 5.18^c
	3	53	41.59 ± 5.47^bc	47	37.22 ± 6.77^bc	66	59.88 ± 4.65^b
	6	58	46.09 ± 2.53^b	51	42.36 ± 5.61^b	76	71.82 ± 1.76^ab
	12	71	62.72 ± 2.28^a	64	56.85 ± 5.63^a	85	82.38 ± 1.92^a
A. sativum	1	46	31.30 ± 5.01^b	29	16.43 ± 2.43^b	66	59.76 ± 4.45^b
	3	50	37.80 ± 5.96^b	34	27.59 ± 5.17^ab	69	65.45 ± 5.16^ab
	6	56	43.37 ± 5.95^b	45	34.35 ± 6.76^a	77	72.79 ± 4.38^a
	12	68	58.35 ± 6.31^a	49	39.49 ± 5.07^a	78	73.92 ± 3.16^a
V. album	1	50	35.83 ± 4.33^c	51	29.07 ± 4.71^c	47	33.57 ± 4.12^c
	3	65	54.93 ± 5.22^b	61	42.41 ± 6.33^b	59	49.72 ± 3.39^b
	6	75	65.37 ± 3.15^ab	78	51.57 ± 5.37^a	70	62.58 ± 2.98^b
	12	77	70.55 ± 2.44^a	79	79.02 ± 3.76^a	81	75.77 ± 3.81^a
T. parthenium	1	49	38.22 ± 5.83^c	64	54.49 ± 4.34^c	47	33.61 ± 4.14^c
	3	64	54.06 ± 3.14^b	77	69.58 ± 1.52^b	60	49.75 ± 3.41^b
	6	75	67.89 ± 2.56^a	85	82.41 ± 1.94^a	71	62.62 ± 2.96^b
	12	82	76.54 ± 3.51^a	88	83.47 ± 1.95^a	81	75.68 ± 3.77^a
R. luteum	1	44	31.87 ± 3.31^b	27	31.66 ± 4.50^b	37	25.81 ± 2.94^c
	3	48	35.38 ± 4.05^b	44	34.02 ± 3.62^b	42	43.23 ± 3.40^b
	6	74	66.14 ± 4.50^a	53	44.35 ± 4.43^b	58	50.31 ± 3.28^ab
	12	81	75.62 ± 3.03^a	67	63.66 ± 2.44^a	68	61.97 ± 3.75^a
	Control	22	0	15	0	15	0

Within columns, means ± SE followed by the same letter are not significantly different (DUNCAN’s multiple F-test 𝑃<0.05).