To evaluate our cyanobacteria biomass as a potential fertilizer, we sent samples for major elemental analysis (Midwest Laboratories), with the results summarized in Table . Notably, PST+ significantly increased biomass phosphorus over wildtype by more than 8-fold. Conversely, the N/P ratio decreased from 2.4 to 0.2, which is crucial for biofertilizer as a low N/P ratio allows farmers to apply phosphorus according to plant demands without over-applying nitrogen or vice-versa.