The term refers to a structured visual guide used in controlled environment agriculture, specifically for nutrient management. It outlines precise feeding schedules and concentrations for plant cultivation, often tailored to specific growth stages and plant varieties. As an example, a chart might detail the parts per million (PPM) of nitrogen, phosphorus, and potassium to administer during the vegetative and flowering phases of plant development.
Such resources are essential for optimizing plant health and yield. They enable cultivators to deliver consistent nutrient solutions, mitigating the risks associated with nutrient deficiencies or toxicities. Historically, these guides evolved from basic fertilizer recommendations to complex, data-driven systems that integrate environmental factors and plant-specific needs. The implementation of this approach is vital to achieving predictable and high-quality harvests.