Many use organic fertilizer and others use chemical fertilizer. Everyone wants the same kind of results out of our favorite fertilizer. We all want healthy plants.
"Nitrogen (N) – Nitrogen is largely responsible for the growth of leaves on the plant.
Phosphorus (P) – Phosphorus is largely responsible for root growth and flower and fruit development.
Potassium (K) – Potassium is a nutrient that helps the overall functions of the plant perform correctly.
Read more at Gardening Know How: Fertilizer Numbers – What Is NPK https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/fertilizer-numbers-npk.htm
Phosphorus is a component of most fertilizers that helps plants to grow . When too much is applied or is applied at the wrong time—such as right before it rains—most of it is washed away and ends up in the local waterways. This type of pollution is called nonpoint source pollution.
“Organic phosphorus fertilizers come primarily from mineral sources, like rock dust or colloidal phosphate (also called “soft phosphate”), or from bone sources, such as steamed bone meal or fish bone meal . Mineral phosphorus sources are cheaper and last longer in the soil.”
" Nitrogen is the chemical element with the symbol N and atomic number 7. Nitrogen is a nonmetal and the lightest member of group 15 of the periodic table, often called the pnictogens. It is a common element in the universe, estimated at seventh in total abundance in the Milky Way and the Solar System. Wikipedia
Atomic number: 7
Atomic mass: 14.0067 u
Electrons per shell: 2,5
Electron configuration: [He] 2s22p3"
“The word potassium stems from the English “pot ash,” which was used to isolate potassium salts. We get K from the name kalium, given by the German chemist Martin Heinrich Klaproth, which stemmed from alkali, which stemmed from the Arabic al-qalyah, or “plant ashes.””
"Potassium is the chemical element with the symbol K and atomic number 19. It is a silvery-white metal that is soft enough to easily cut with a knife. Potassium metal reacts rapidly with atmospheric oxygen to form flaky white potassium peroxide in only seconds of exposure. Wikipedia
Atomic number: 19
Atomic mass: 39.0983 u
Van der Waals radius: 280 pm
Boiling point: 1,398°F (758.8°C)
Electron configuration: [Ar] 4s¹"