“Long” dataset

1) ID: UNFAO Country Code; 2) Year; 3) Tropical: a 1 indicates that that country is a tropical country and a 0 indicates that the country is a temperate country; 4) tons / ha: a country's crop yield in year t in metric tons / ha (I summed all tons of crops produced in a country and divided by total cropped hectares in a country); 5) million kcals / ha: a country's crop yield in year t in millions of kcals / ha (I summed all kcals of crops produced in a country and divided by total cropped hectares in a country); 6) soilscore: The composite soil quality score of the land that was cropped in year t in country k (on a 1 to 5 scale with lower numbers indicating better soil); 7) ha: total cropped hectares in year t in country k; 8) rice: percentage of cropped area in rice in year t in country k; 9) wheat: percentage of cropped area in wheat in year t in country k; 10) sugar: percentage of cropped area in sugarcane in year t in country k; 11) grains: percentage of cropped area in coarse grains in year t in country k; 12) oil: percentage of cropped area in oil crops in year t in country k; 13) fruits: percentage of cropped area in fruits in year t in country k; 14) roots: percentage of cropped area in roots and tubers in year t in country k; 15) other: percentage of cropped area in all other crops in year t in country k; 16) davg: The composite average daytime temperature over cropped lands during the growing season year t in country k (Celsius); 17) navg: The composite average nighttime temperature over cropped lands during the growing season year t in country k (Celsius); 18) pavg: The total rainfall over cropped lands during the growing season year t in country k (mm); 19) irr: Fraction of cropped lands that are equipped for irrigation in year t in country k; 20) land: total money invested in agricultural land development divided by cropped hectares in year t in country k (2005 constant US $ / ha); 21) eqp: total money invested in agricultural equipment divided by cropped hectares in year t in country k (2005 constant US $ / ha)