Use the data in Tables 1 and 2 to calculate input elasticities with respect to three production factors including irrigated land, fertilizer use, and machinery use. Interpret and compare the input elasticities. Source: World Development Indicators, 2009. Note: cereal yield, measured in kilograms per hectare of harvested land, includes wheat, rice, maize, barley, oats, rye, millet, sorghum, buckwheat. Agricultural value added per worker is calculated by dividing total agricultural value added with the number of workers in agriculture..