Relation between Helicoverpa armigera (Hubner) (Lepidoptera/Noctuidae) mortality and entomopathogenic fungi persistence in soybean leaflets

de Souza, Tamires Doroteo; Fernandes, Fabricio Oliveira; Sanches, Ariadne Costa; do Nascimento, Joacir; Pinto, Antonio Alves; Polanczyk, Ricardo Antônio

doi:10.1186/s41938-022-00508-8

Egyptian Journal of Biological Pest Control

Table 5 Mean life history parameters (± standard error) of the life table of Helicoverpa armigera at different collection times after the application of the fungi Beauveria bassiana and Metarhizium anisopliae to the soybean crop in the first season (2019) over a single generation at 25 ± 1 °C and 70% ± 10% RH

From: Relation between Helicoverpa armigera (Hubner) (Lepidoptera/Noctuidae) mortality and entomopathogenic fungi persistence in soybean leaflets

Treatments (hrs)	Population parameters
	T (days)	R₀	r (day⁻¹)	\(\mathchar'26\mkern-10mu\lambda\) (day⁻¹)	GRR
Beauveria bassiana
0.5	38.60 ± 0.44 Ns	12.95 ± 6.19 e	0.066 ± 0.013 c	1.106 ± 0.014 b	187.8 ± 63.03 d
1	35.46 ± 0,11 Ns	38.79 ± 11.32 d	0.103 ± 0.009 b	1.108 ± 0,009 b	268.7 ± 50.85 ab
2	37.91 ± 0.35 Ns	81.29 ± 18.75 b	0.116 ± 0.006 a	1.123 ± 0.007 a	269.9 ± 55.02 ab
3	36.87 ± 0.53 Ns	50.62 ± 11.04 c	0.106 ± 0.006 ab	1.112 ± 0.007 b	210.4 ± 28.11 c
4	34.94 ± 0.13 Ns	63.7 ± 10.17 c	0.118 ± 0.004 a	1.126 ± 0.005 a	112.93 ± 15.16 d
5	34.72 ± 0.16 Ns	137.73 ± 20.17 a	0.142 ± 0.005 a	1.152 ± 0.005 a	245.88 ± 28.42 b
6	36.29 ± 0.18 Ns	119.74 ± 18.06 a	0.131 ± 0.004 a	1.140 ± 0.004 a	296.14 ± 56.61 a
7	36.29 ± 0.2 Ns	110.28 ± 16.60 a	0.129 ± 0.004 a	1.138 ± 0.004 a	203.79 ± 26.09 c
Metarhizium anisopliae
0.5	41.26 ± 0.58 a	21.78 ± 7.80 f	0.074 ± 0.009 c	1.07 ± 0.001 Ns	211.19 ± 58.56 c
1	35.90 ± 0.12 b	163.61 ± 22.41 c	0.142 ± 0.004 a	1.15 ± 0.004 Ns	214.48 ± 26.86 c
2	36.45 ± 0.32 b	147.27 ± 18.77 c	0.137 ± 0.003 a	1.14 ± 0.004 Ns	287.31 ± 36.3 b
3	36.20 ± 0.32 b	109.75 ± 17.31 d	0.129 ± 0.004 ab	1.13 ± 0.005 Ns	190.36 ± 34.45 d
4	34.94 ± 0.13 b	63.7 ± 10.16 e	0.118 ± 0.004 b	1.12 ± 0.005 Ns	112.93 ± 15.13 d
5	34.71 ± 0.16 b	137.2 ± 20.15 c	0.141 ± 0.004 a	1.15 ± 0.005 Ns	244.86 ± 28.18 bc
6	35.72 ± 0.1 b	281.0 ± 24.74 a	0.157 ± 0.002 a	1.17 ± 0.002 Ns	323.32 ± 26.82 a
7	33.62 ± 0.14 b	237.1 ± 27.88 ab	0.162 ± 0.003 a	1.17 ± 0.004 Ns	275.54 ± 31.53 b
Control
0.5	35.65 ± 0.17 Ns	283.32 ± 24.00 Ns	0.151 ± 0.003 Ns	1.16 ± 0.003 Ns	330.41 ± 41.47 Ns
1	35.91 ± 0.11 Ns	263.61 ± 22.45 Ns	0.141 ± 0.004 Ns	1.15 ± 0.004 Ns	316.56 ± 26.48 Ns
2	35.59 ± 0.12 Ns	287.93 ± 21.81 Ns	0.147 ± 0.003 Ns	1.58 ± 0.003 Ns	319.82 ± 23.60 Ns
3	35.77 ± 0.11 Ns	278.39 ± 22.54 Ns	0.144 ± 0.004 Ns	1.15 ± 0.004 Ns	319.18 ± 29.42 Ns
4	35.68 ± 0.12 Ns	282.38 ± 26.83 Ns	0.151 ± 0.004 Ns	1.16 ± 0.004 Ns	327.52 ± 30.44 Ns
5	35.72 ± 0.1 Ns	281.02 ± 24.74 Ns	0.150 ± 0.002 Ns	1.17 ± 0.003 Ns	323.32 ± 26.83 Ns
6	33.71 ± 0.1 Ns	281.02 ± 24.74 Ns	0.167 ± 0.002 Ns	1.18 ± 0.003 Ns	323.35 ± 26.80 Ns
7	33.62 ± 0.14 Ns	287.1 ± 27.87 Ns	0.162 ± 0.003 Ns	1.17 ± 0.004 Ns	325.54 ± 31.50 Ns

The data for each parameter were calculated using the 100.000 color initialization procedure. The means followed by the same letters did not differ between each other (paired initialization test: p < 0.05). T (day)—Average duration of a generation, R₀—net reproduction rate, r (day⁻¹)—Intrinsic rate of increase, λ (day⁻¹)—finite rate of increase, GRR—gross reproduction rate, Ns—not significant

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