Zhengzhou Delong Chemical Co., Ltd [China]

Paclobutrazol is a plant growth retardant. It acts by inhibiting gibberellin biosynthesis, reducing internodial growth to give stouter stems, increasing root growth, causing early fruitset and increasing seedset in plants such as tomato and pepper. Paclobutrazol has also been shown to reduce frostsensitivity in plants. Paclobutrazol is also used to reduce shoot growth and has been shown to have additional positive effects on trees and shrubs. Among those are improved resistance to drought stress, darker green leaves, higher resistance against fungi and bacteria, and enhanced development of roots.