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• Scientific conclusions regarding the effects of potassium and phosphorus fertilization on industrial hemp are mixed.
• The procedure for mineral digestion involves digesting leaf samples in a 20 mL diacid mixture of HCl and HClO4 in a 4:1 volumetric ratio, bringing the final volume to 100 mL, and using the resulting extract to analyze Phosphorus (P), Potassium (K), Calcium (Ca), and Sulfur (S).
• Ions of calcium, phosphorus, sodium, potassium, and magnesium play vital roles in the metabolic processes of the human body.
• Hemp grains, which are edible seeds harvested for human or animal consumption, contain approximately 5.6% minerals (calcium, magnesium, potassium, and phosphorus), 25% protein, 28% total dietary fiber, and more than 30% oil.
• Mineral analysis of Bellevalia forniculata, Beta corolliflora, Caltha polypetala, and Primula auriculata showed high amounts of potassium (892.93–2,663.63 mg/100 g), phosphorus (239.57–636.77 mg/100 g), calcium (279.90–341.33 mg/100 g), magnesium (103.43–363.27 mg/100 g), iron (11.06–37.13 mg/100 g), manganese (1.56–5.39 mg/100 g), and zinc (2.28–3.36 mg/100 g).
• Phosphorus in a plant digest is analyzed using the Canada-molybdate yellow color method, Potassium and Calcium are analyzed using a flame photometer, Sulfur is evaluated using a turbidimetric process, and Sodium, Zinc, Copper, Iron, and Manganese are determined using atomic absorption spectrophotometry.
• The quality and yield of industrial hemp bast fiber are affected more by potassium than by phosphorus.
• Basil plants grown under a red-to-blue light ratio of 3:1 show accumulation of nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), and iron (Fe).
• The key macronutrients required for growing industrial hemp are nitrogen, potassium, and phosphorus, according to Wylie et al. (2021).
• Tjhia et al. (2018) analyzed the correlations between leaf nitrogen, phosphorus, and potassium levels and the content of chlorophyll, anthocyanins, and carotenoids in bitter leaf (Vernonia amygdalina Del) during its vegetative and generative growth stages, published in the Journal of Tropical Crop Science.
• Common minerals analyzed in medicinal plants include calcium, phosphorus, potassium, sulfur, and nitrogen, which contribute to bone health, immune function, enzyme activation, and antioxidant defense mechanisms.
• Mustard plants grown under a blue-to-red light ratio of 1:1 show accumulation of phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), sulfur (S), manganese (Mn), iron (Fe), zinc (Zn), copper (Cu), and boron (B).
• Dill plants grown under red light show accumulation of phosphorus (P), potassium (K), calcium (Ca), and zinc (Zn).
• Ions of phosphorus, potassium, and magnesium are abundant within human intercellular fluid.