Comparative analysis of proximate composition and mineral concentrations of green leafy vegetables: Bok choy, nalta jute, and red-stemmed malabar spinach in non-volcanic and volcanic soils of Botolan, Zambales

During the Mt. Pinatubo eruption, the agricultural lands in the surrounding provinces were covered in ashfall. Considering that more than thirty-five years have passed, vegetation in the surrounding highland areas of Mt. Pinatubo has recently started to increase. However, early local research on the