The first section of this paper outlines the effect of gender norms on the productivity and incomes of women in the agricultural sectors of various African countries. The main challenges faced by women in value chains are outlined, including limited land rights, lower education levels and lower financial inclusion, as well as traditional division of labour in the household. These constraints are examined in turn, and their implications in terms of agricultural productivity and earnings are discussed.

The main goal of the study is to quantify the effects of a) change in nitrogen fertilization rate, b) adjustment of sowing date, c) implementation of new cultivars, and d) supplementary irrigation on maize cropping systems across six African countries including Ghana, Nigeria, Kenya, Malawi, Ethiopia and Burkina Faso. For this purpose, 30 years (1980-2010) of climate data are used as well as soil and management information obtained from global datasets at 0.5° x 0.5° spatial resolution.