“…Different from these studies, our study uniquely reports enhanced germination in soils with limiting P conditions due to acidic and basic pH. It has been reported previously that the use of nHAP in presence of nanoclinoptilolite has resulted in the slow release of P in calcareous soil having alkaline pH [ 59 ]. In other previous studies, it has also been reported that nHAP has the slower release of P in the case of an acidic environment [ 1 , 26 ].…”