Three published studies of rice from Italy (Blengini and Busto,
2009), China (Wang et al., 2010) and Japan (Hokazono and
Hayashi, 2012) were chosen for the comparison with our study
for North East Thai rice. All three studies, although showing contrasted
goal and scope, had enough transparency in materials and
methods to allowcalculating LCA results per kg of rice at-the-farmgate
and in the same units. Interestingly, none of the available
studies presented toxicity results and used a reduced selection of
impacts categories (4e6).