Figure legends
Figure 1. Effects of fertilization treatment on millet protein and carbohydrate content after 5 days (Day 5, panel A), and after 18 days (Day 18, panel B). The dashed line marked “intake target” represents the optimal quantity of protein and carbohydrate selected by O. senegalensis with artificial diets (64). The other lines represent the average protein:carbohydrate ratio of millet plants for each fertilization treatment. For each treatment N=30, p<0.05.
Figure 2. Choice experiment: dry consumption (g) of unfertilized millet (control: light grey) vs. fertilized millet (medium N: grey; high N: black). For each treatment N=25, p<0.05.
Figure 3. Locust survival across treatments for 20 days. Each line represents the average number of locust alive in each cage for the three treatment. For each treatment N=112-128 locusts, p<0.05.
Figure 4. Effect of fertilization treatment on total number of eggs per cage (panel A), and on average egg mass (panel B). For each treatment N=14 -16 cages, p<0.05.