Mobile communications can help increase agricultural productivity and sustainability. This report identifies 12 opportunities for mobile technologies to: 1) increase agricultural income across 26 markets by $138 billion in 2020, 2) cut CO2 emissions by 5 megatons, and 3) reduce freshwater use for irrigation by 6%. Realizing these benefits requires 549 million connections to relevant mobile services by 2020 through partnerships between mobile operators, governments, NGOs, and businesses.