TABLE 1.
Number of maize and groundnut samples from fields treated with an aflatoxin biocontrol product and accompanying untreated fields (field efficacy trials, 2009–2012) and samples taken from commercially treated and control maize (2013–2018).
| Year | Crop | Purpose | Number of samplesz | |
| Biocontrol-treated | Control | |||
| 2009 | Maize | Farmer field efficacy trials | 51 | 51 |
| Groundnut | Farmer field efficacy trials | 8 | 8 | |
| 2010 | Maize | Farmer field efficacy trials | 14 | 14 |
| Groundnut | Farmer field efficacy trials | 16 | 16 | |
| 2011 | Maize | Development of market linkages | 199 | 199 |
| Groundnut | Development of market linkages | 82 | 82 | |
| 2012 | Maize | Development of market linkages | 38 | 38 |
| 2013 | Maize | Commercial use by farmers | 660 | 0 |
| 2014 | Maize | Commercial use by farmers | 213 | 99 |
| 2015 | Maize | Commercial use by farmers | 292 | 109 |
| 2016 | Maize | Commercial use by farmers | 1,314 | 0 |
| 2017 | Maize | Commercial use by farmers | 2,451 | 257 |
| 2018 | Maize | Commercial use by farmers | 2,751 | 240 |
zDuring 2009–2013, grain samples were collected from individual farmer’s field. During 2014–2018, field officers of the AgResults Project collected a 5-kg sample from each 30-ton grain lots aggregated from multiple farmers by commercial enterprises. For example, in 2014, 213 maize samples represent a total of 6,390 tons of biocontrol-treated maize.