Advances in Agriculture

Research Article

Efficacy of Biorational Compounds against Mustard Aphid (Lipaphis erysimi Kalt.) and English Grain Aphid (Sitobion avenae Fab.) under Laboratory Conditions in Nepal

Table 2

Mortality of L. erysimi in response to different biorational compounds at laboratory of Paklihawa Campus, Nepal, in 2018.


Treatments	Dosage	Percentage mortality of mustard aphids
		Leaf spray bioassay				Leaf dip bioassay
		Hours after treatment (HAT)				Hours after release (HAR) of aphids
		24	48	72	96	24	48	72	96

T1-M. anisopliae	3 ml/1000 ml of water	25.00^ab ± 3.19 (29.87)	41.67^ab ± 5.18 (40.14)	52.50^b ± 4.17 (46.45)	60.84^bc ± 4.59 (51.34)	25.83^abc ± 2.50 (30.46)	49.17^ab ± 4.38 (44.51)	62.50^ab ± 5.34 (52.38)	71.67^ab ± 6.16 (58.30)
T2-B. bassiana	3.3 ml/1000 ml of water	29.17^a ± 1.59 (32.66)	47.50^a ± 4.98 (43.55)	60.83^ab ± 6.86 (51.42)	67.50^bc ± 6.44 (55.52)	29.17^ab ± 2.10 (32.64)	48.33^ab ± 2.89 (44.03)	62.50^ab ± 4.38 (52.31)	70.84^ab ± 5.16 (57.54)
T3-V. lecanii	6 ml/1000 ml water	21.67^b ± 2.15 (27.65)	33.34^b ± 1.93 (35.24)	39.17^c ± 2.50 (38.71)	41.67^d ± 2.15 (40.19)	21.67^c ± 0.96 (27.72)	36.67^c ± 3.04 (37.21)	50.00^b ± 4.91 (45.00)	58.33^b ± 5.18 (49.88)
T4-Bt var. kurstaki	6 g/1000 ml water	22.50^ab ± 2.50 (28.23)	39.17^ab ± 2.50 (38.72)	51.67^b ± 0.96 (45.95)	55.83^c ± 3.19 (48.35)	15.00^d ± 0.96 (22.75)	25.00^d ± 2.15 (29.93)	33.33^c ± 4.08 (35.14)	37.50^c ± 4.79 (37.65)
T5-Azadirachtin	3.3 ml/1000 ml water	27.50^ab ± 2.50 (31.55)	48.33^a ± 2.89 (44.04)	66.67^a ± 3.04 (54.80)	81.67^a ± 3.19 (64.93)	31.67^a ± 2.89 (34.18)	52.50^a ± 2.50 (46.43)	68.33^a ± 3.97 (55.88)	78.33^a ± 3.97 (62.54)
T6-Spinosad	0.33 ml/1000 ml of water	27.50^ab ± 2.10 (31.58)	46.67^a ± 1.36 (43.08)	60.84^ab ± 3.15 (51.30)	70.00^b ± 4.91 (57.05)	24.17^bc ± 2.85 (29.31)	40.00^bc ± 4.30 (39.16)	51.67^b ± 7.00 (46.01)	58.33^b ± 7.76 (49.99)
T7-untreated control	Water	5.00^c ± 0.96 (12.74)	8.34^c ± 0.96 (16.69)	8.34^d ± 0.96 (16.69)	33.34^e ± 0.96 (16.69)	3.33^e ± 0.00 (10.52)	5.84^e ± 0.83 (13.85)	6.67^d ± 1.36 (14.71)	6.67^d ± 1.36 (14.71)

SEM		10.34	16.31	20.53	27.23	7.53	8.13	9.56	9.59
LSD		4.77	6.00	6.73	7.75	4.07	5.58	8.60	10.18
C.V. (%)		11.59	10.81	10.38	10.93	10.24	10.31	13.45	14.51

Mean in column with same subscript is not significant at 5% level of significance by DMRT. 0.001, 0.01, 0.05 of value, HAT = hours after treatment, HAR = hours after release.