A recent review of biochar articles by Spokas et al. (2012) concluded that while application of biochars can lead to positive results in agricultural production, there have been some reports of no crop yield benefits (Schnell et al. 2012) or even negative yield responses (Lentz and Ippolito 2012). Reported low yields could be because of reduced nutrient release for plant uptake, application of biochar on fertile soils, or a low rate of biochar application. High yields observed in some cases of biochar application could not be easily explained, but might depend on biochar properties, the soil fertility status, and the agronomic crop under consideration. Ippolito, Laird, and Busscher (2012) pointed out that most recent research on biochar has been conducted on highly weathered and infertile soils where benefits of biochar application were often noted. UF/IFAS researchers are working on determining benefits of biochars on sandy soils of Florida with low fertility and documenting any improvements in crop growth and yield.