The coefficients for βl and δl are plotted in Figure V. They show that for cohorts born prior to the reform, the effects of planting tea and orchards on the fraction of males were similar to each other and constant across cohorts. The effects diverge for cohorts born around the time of the reform, when planting tea is associated with fewer males, while planting orchards is associated with more males. The differential effects persist over time. These results lend credibility to the interpretation that the effect of tea and orchard production on the fraction of males is attributable to the post-Mao agricultural reforms and not to other changes in these regions.