In the original publication of this article, the numbers of seeds per m–2 were underreported in Table 2 due to a calculation error. This error does not affect the results or findings of the experiment, as calculations and analysis using seeding rates were based on seed weight. Please find the corrected Table 2 below.
a Seed costs: pearl millet, US$52.60 ha−1; sorghum sudangrass, US$205.10 ha−1; cowpea, US$253.30 ha−1; sunn hemp, US, $255.00 ha−1. Prices are from 2013.
The authors apologize for this error.