Glyphosate is a broad-spectrum systemic herbicide and crop desiccant. It is an organ phosphorus compound, specifically a phosphonate. It is used to kill weeds, especially annual broadleaf weeds and grasses that compete with crops.
Glyphosate is absorbed through foliage, and minimally through roots and transported to growing points. It inhibits a plant enzyme involved in the synthesis of three aromatic amino acids: tyrosine, tryptophan, and phenylalanine.
In plants, glyphosate disrupts the shikimic acid pathway resulting in a deficiency of 5- enolpyruvylshikimate-3- phosphate production which leads to reductions in protein synthesis and plant growth, death of the plant occurs in 4-20 days. The median half-life of glyphosate in soil is between 2 and 197 days