Biocontrol-based management module provided maximum protection in potato against white grub, Lepidiota mansueta Burmeister in Assam, India

Dumala, Sravani; Bhattacharyya, Badal; Elangbam, Bidyarani Devi

doi:10.1186/s41938-023-00650-x

Egyptian Journal of Biological Pest Control

Table 2 Effect of different eco-friendly management modules in reducing Lepidiota mansueta grub infestation in potato

From: Biocontrol-based management module provided maximum protection in potato against white grub, Lepidiota mansueta Burmeister in Assam, India

Modules	Pre sowing treatment	Soil drenching	Tuber damage (%) on weight basis			Tuber damage (%) on number basis			Tuber yield (q/ha)			L. mansueta grub population (No./m²)			BCR
Modules	Pre sowing treatment	Soil drenching	2019–2020	2020–2021	Pooled data	2019–2020	2020–2021	Pooled data	2019–2020	2020–2021	Pooled data	2019–2020	2020–2021	Pooled data	2019–2020	2020–2021	Pooled data
Module-I	MOC @ 150 kg/ha + wood ash 150 kg/ha + panchagavya @ 3%	–	25.78 (30.51)^b	22.10 (28.04)^b	23.94 (29.29)^b	27.74 (31.78)^b	26.71 (31.11)^b	27.22 (31.45)^b	91.31	94.31	92.81	6.33	5.67	6.00	1.92	2.02	1.97
Module-II		Soil drenching with neem oil @ 5 ml/L after 1st & 2nd earthing up (25 & 60 DAS)	17.68 (24.86)^e	14.98 (22.77)^e	16.33 (23.83)^e	20.39 (26.84)^e	18.55 (25.51)^e	19.47 (26.19)^e	114.17	116.67	115.42	3.67	3.33	3.50	2.53	2.61	2.57
Module-III		Soil drenching with jatropha oil @ 5 ml/L after 1st & 2nd earthing up (25 & 60 DAS)	12.40 (20.62)^f	11.23 (19.58)^f	11.82 (20.10)^f	15.53 (23.21)^f	14.02 (21.98)^f	14.78 (22.60)^f	120.64	122.36	121.50	2.67	2.33	2.50	2.77	2.82	2.80
Module-IV		Soil drenching with pongamia oil @ 5 ml/L after 1st & 2nd earthing up (25 & 60 DAS)	20.72 (27.08)^d	16.83 (24.22)^d	18.78 (25.68)^d	23.44 (28.95)^d	20.64 (27.02)^d	22.04 (28.00)^d	109.72	111.18	110.45	4.33	4.00	4.17	2.40	2.44	2.42
Module-V		Soil drenching with castor oil @ 5 ml/L after 1st & 2nd earthing up (25 & 60 DAS)	23.79 (29.19)^c	19.86 (26.46)^c	21.83 (27.85)^c	25.42 (30.27)^c	24.35 (29.56)^c	24.88 (29.92)^c	102.24	104.24	103.24	5.00	4.67	4.83	2.18	2.24	2.21
Module-VI		Metarhizium anisopliae @ 10 g/m2 after 1st & 2nd earthing up (25 & 60 DAS)	11.78 (20.06)^f	10.86 (19.24)^f	11.32 (19.66)^f	14.65 (22.50)^f	13.50 (21.55)^f	14.07 (22.03)^f	121.39	124.03	122.71	2.33	2.00	2.17	2.82	2.90	2.86
Control	(Without any practice)		32.84 (34.97)^a	30.85 (33.74)^a	31.85 (34.35)^a	35.30 (36.45)^a	33.97 (35.65)^a	34.63 (36.05)^a	83.82	85.28	84.55	8.67	7.33	8.00	–	–	–
S.Ed ±			0.31	0.32	0.25	0.55	0.45	0.36	0.70	0.82	0.63	–	–	–	–	–	–
CD (5%)			0.67	0.69	0.55	1.19	0.98	0.78	1.52	1.79	1.36	–	–	–	–	–	–

*DAS = Days after Sowing
Figures in parentheses are angular transformed values. Means followed by the same letter are not significantly different [DMRT, (P < 0.05)]

Back to article page