Gender productivity gaps in agriculture are large around the world, even though women comprise 40-50 percent of the agricultural labor force in developing countries. Gender differences in agricultural productivity can be as high as 66 percent and can cost countries up to 05 million annually. Women farmers tend to produce lower output per unit of land than men farmers because of gender-specific constraints, such as unequal access to farm labor, agricultural inputs, lower literacy, childcare responsibilities, limited involvement in cash crop production, and lower participation in farmers' groups. Women farmers are concentrated in the lower levels of agricultural value chains and are less likely to be active in commercial farming than men. Restrictive gender norms underlie occupational sex segregation in agriculture, leading women to concentrate in low-value crops.