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. 2020 Nov;150:104351. doi: 10.1016/j.biocontrol.2020.104351

Table 7.

Incidence (%) of atoxigenic African Aspergillus flavus Vegetative Compatibility Groups (AAVs) composing Aflasafe GH01 in soils and grains in five regions across three agroecological zones (AEZs) in Ghana.

Incidence (%)
AEZa Region Treatmentb Maize
Groundnut
2015
2016
2015
2016
SBc SHd Graine SB SH Grain SB SH Grain SB SH Grain
DS Brong Ahafo Treated 0.0 83.3** 75.0** 0.0 77.8** 72.2** 2.8 74.9** 58.3 2.8 80.6** 69.4**
Untreated 2.8 3.7 0.0 2.8 2.8 2.8 0.0 0.0 52.8 2.8 2.8 0.0
Northern Treated 0.0 73.6** 64.8** 1.4 81.9* 87.5* 0.0 61.1** 63.9** 8.3 79.2** 66.7**
Untreated 4.2 0.0 13.9 0.0 44.4 36.1 2.8 1.4 0.0 0.0 8.3 0.0
HF Ashanti Treated 0.0 66.1** 54.2** 0.0 84.7** 87.5** 2.8 68.1** 76.4** 5.5 81.9** 56.9**
Untreated 0.0 4.9 8.3 5.5 19.4 22.2 0.0 0.0 9.7 0.0 9.7 5.5
Brong Ahafo Treated 0.0 94.4** 80.6** 2.8 79.8** 75.0* 0.0 83.3** 77.8 0.0 72.2** 66.7**
Untreated 0.0 0.0 8.3 0.0 8.3 27.8 0.0 2.8 55.6 0.0 0.0 2.8
SGS Upper East Treated 0.0 58.3** 79.2** 0.0 77.8** 77.8** 0.0 59.7** 70.8** 0.0 91.7** 62.5
Untreated 0.0 4.2 11.1 0.0 0.0 2.8 0.0 0.0 13.9 0.0 29.2 37.5
Upper West Treated 0.0 72.2** 69.4** 0.0 79.2** 75.0** 0.0 58.3** 62.5** 0.0 72.2** 66.7**
Untreated 2.8 1.4 4.2 2.1 10.4 14.6 0.0 2.8 5.6 0.0 2.8 0.0

Significance levels, * (P < 0.05) and ** (P < 0.01) for testing the differences between treatment means within regions based on Student’s t-test (α = 0.05).

a

DS, Derived Savanna; HF, Humid Forest; SGS, Southern Guinea Savanna.

b

Treated refers to fields to which Aflasafe GH01 was applied at the rate of 10 kg/ha. Untreated were nearby fields separated by at least 25 m from corresponding treated field in which no biocontrol product was applied.

c

SB = Soil collected from fields prior to application of Aflasafe GH01.

d

SH = Soil collected at harvest.

e

Grain = Maize or groundnut kernels at harvest.