A common prescription for improving nutrition, especially among children, is to promote the addition to people’s diet of dark green leafy vegetables, grown in home gardens. A tremendous variety of native tropical leaf vegetables are delicious and easy to grow, providing a regular source of high-quality food at the doorstep. Leaves can provide essential minerals and vitamins often missing in starch-based diets.
Trees can be an effective source of mulch in drylands.
Cashew (Anacardium occidentale) may be known as a poor man’s crop, but this is probably because it grows well on sandy soils of poor fertility. In Mozambique and Tanzania, cashew occupies lowland areas close to the coast with a rainfall between 900-1300 mm (35.5-52 in) per year.
Certain seeds have been shown to respond to smoke before they will germinate, even when there is no fire.