Supplementary Material

Supplementary Fig. (SF) 1. Leaflet K and Mg contents of 116 high yielding oil palm progenies tested on Aek Loba Timur genetic block in Indonesia showing the four best contrasting progenies that survived the trial based on their mineral contents used to set up the mineral nutrition (MN) × genetic material (GM) trial in Nigeria.

“Av” is the average of leaflet mineral (K or Mg) concentration of an oil palm population and “sd” is its standard deviation.

Supplementary Table (ST) 1. Physico-chemical soil characteristics at the onset of the Nigerian and Indonesian trials.

N: Nitrogen, C: Carbon, P: Phosphorus, Al: Aluminium, Na: Sodium, Ca: Calcium, Mg: Magnesium, S: Base ion (cation) sum, CEC: Cation exchange capacity, TS: Saturation rate, pHco: pH cobalt (Soil acidity assessed using the cobaltihexamine method).

Supplementary Table (ST) 2. Fertilizer application scheme(in g of fertilizer per palm) in Nigeria (A) and Indonesia (B).

© O.S. Dassou et al., Published by EDP Sciences, 2022