Evaluation location: Puerto Rico, United States
Twelve cacao (Theobroma cacao) clones propagated by grafting were evaluated by USDA-ARS at the Corozal Agricultural Experiment Station of the University of Puerto Rico (Corozal clay; clayey, mixed, isohyperthermic Aquic Haplohumults) and evaluated for 6 years of production under intensive management. The soil has a pH of 4.47, NH4-N 83 mg/kg, NO3-N 74 mg/kg, phosphorus 10 mg/kg, potassium 353 mg/kg, calcium 1293 mg/kg, magnesium 79 mg/kg, iron 146 mg/kg, manganese 19 mg/kg, zinc 0.26 mg/kg, aluminum 144 mg/kg, and 1.41% organic carbon. The 64-year (1948–2012) mean annual rainfall is 1905 mm and Class A pan evaporation is 1433 mm. Mean monthly maximum and minimum temperatures are 29.9 (C) and 19.5 (C), elevation, 195 m.