Synthetic plant growth regulators are inorganic substances made by physical
chemistry that affect plant growth. Some mimic the natural growth regulators in
structure and action. Many are completely different to natural regulators both
in structure and action. They are applied for specific purposes to affect
specific plant responses. Achieving the best results with PGRs is a combination
of art and science���?science tempered with a lot of trial and error and a
good understanding of plant growth and development. Several new plant growth
regulators have come on the market for use in plants in recent years. These
plant growth regulators have given plant growers a new opportunity to