This is a term used to describe the degree of toxic effect by a compound on plant growth.radioactivityphytoconcentrationphytotoxicitybioconcentration

The term you are looking for is phytotoxicity. Phytotoxicity refers to the degree to which a substance, such as a chemical or compound, can harm plant growth and development. This can include effects on seed germination, root growth, leaf expansion, and overall plant health. Compounds that exhibit high phytotoxicity can cause detrimental effects, leading to reduced agricultural productivity and affecting ecosystems. Understanding phytotoxicity is crucial in environmental science, agriculture, and horticulture for assessing the safety and impact of various chemicals, including herbicides and pollutants, on plants.