This paper presents a database of investment and capital in agriculture, an essential input for cross-country macro analysis of the primary sector of the economy. Our work stems from the innovative research undertaken by Larson et al. (2000). With respect to these authors, we extend country coverage and time span. Further we introduce some refinements to the methodology used to construct the series of fixed capital stock by changing how the agricultural GDP and investment is forecasted. Finally we document in details our data sources and the STATA program used to implement all the methods.