Carbon accounting and labeling forproducts are new instruments of supply chain management thatmay affect developing country export opportunities. Mostinstruments in use today are private business managementtools, although the underlying science and methodologies mayspread to issues subject to public regulation. This noteseeks to inform stakeholders involved in the design ofcarbon labeling schemes and in the making of carbon emissionmeasurement methodologies about an overlooked issue: how cancarbon labeling be made to be both development friendly andscientifically correct in its representation ofdeveloping-country agricultural sectors?