Abstract:
The peat soiL taken from Rimbo Panjang, Kampar Riau with saprik. The research is conducted
experimentty and uses factorial complete random design which contain of 2 factors: application of oil
palm bunch ash ln 4 levels (0, 300, 600 dan 900 kg/ha) and K fertilizer in also 4 levels: (0, 36, 72 dan
108kg K2 O/ha). Result of theresearch indicates that oil palm bunch ash can substitute K around 36
Kg k2 o/ha. The applied of 300 kg/ha of oil palm bunch ash without K fertilizer can increase height of
plant, but it does not influence an amount and weigth of leaves even though K dosage (K fertilizer
and
oil palm bunch ash) is increased. The applied of 600 kg/ha of oil palm bunch ash can increase
melon fruit diameter and weight about 13,11% and 32,57% if it is compared to control.
