Moyin-Jesu and Adeofun (2008) reported that
the incorporation of organic sources like ash from
oil palm trees, straw, and turkey and other farm bird
manure, and their interactions (8 kg ha-1), together with
the formula 15-15-15 NPK (400 kg ha-1), affected plant
height and foliar area, it being statistically greater than
those found in unfertilized trees.