Farmers from Dalli could see for themselves that the millet seedlings sheltered by the field station survived better, became taller and produced a higher yield than those sown further away. So they drew the conclusion that it was beneficial for them to direct seed perennials in their fields. Eden doesn't provide economic incentives for direct seeding. The farmers have sown on their own initiative. Several of the species they sowed have a direct economic value, their fruits are sold in town markets, so any surplus can be used to generate income for the purchase of other necessities.
Perennials provide organic fertiliser from leaf fall and nitrogen from nitrogen fixing species.
These species are reported to have other uses like forage, firewood, medicine, timber, dye, tannin, candle, chemicals, fibre and insecticide. The fruits from one of these species contain four times as much vitamin C as oranges.