In the plant kingdom, a multi-part formula is created using a combination of separate hydroponic nutrients. The pH level required for a plant is used to manipulate the quantity of each nutrient used to create a multi-part formula. A multi-part formula is used to help plants effectively absorb nutrients which results in an increase in the yield of plants. This is often used in hydroponics but it can be used in soil or soil-less garden types.
The use of a multi-part formula allows gardeners to create a balance between the required amount of solubility and well-rationed nutrition for plants. Using a multi-part formula over a one-part formula is important as a one part formula does not address all the chemical and biological differences that allow negative or unexpected reactions when used in plants.
Though some growers opt for one part formulas, a multi-part formula (often involving two or three nutrients) ensures all nutrients needed for plant growth is considered. As a result, multi-part formulas ensure the plants it is used in receives all needed nutrients and helps improve yield. Secondary macronutrients is a popular nutrient choice for multi-part formulas.